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748 Commits

Author SHA1 Message Date
Craig Topper 42b96d1b74 Mark a static array as const. 
llvm-svn: 157368
 2012-05-24 04:11:15 +00:00
Kevin Enderby f1b225d0e0 Fix the encoding of the armv7m (MClass) for MSR APSR writes which was missing 
the 0b10 mask encoding bits.  Make MSR APSR writes without a _<bits> qualifier
an alias for MSR APSR_nzcvq even though ARM as deprecated it use.  Also add
support for suffixes (_nzcvq, _g, _nzcvqg) for APSR versions.  Some FIXMEs in
the code for better error checking when versions shouldn't be used.
rdar://11457025

llvm-svn: 157019
 2012-05-17 22:18:01 +00:00
Silviu Baranga 5a719f9b9a Fixed the LLVM ARM v7 assembler and instruction printer for 8-bit immediate offset addressing. The assembler and instruction printer were not properly handeling the #-0 immediate. 
llvm-svn: 156608
 2012-05-11 09:10:54 +00:00
Jim Grosbach c6f32b3295 ARM: Thumb add(sp plus register) asm constraints. 
Make sure when parsing the Thumb1 sp+register ADD instruction that
the source and destination operands match. In thumb2, just use the
wide encoding if they don't. In Thumb1, issue a diagnostic.

rdar://11219154

llvm-svn: 155748
 2012-04-27 23:51:36 +00:00
Richard Barton 82f95ea2ad Fix ARM assembly parsing for upper case condition codes on IT instructions. 
llvm-svn: 155720
 2012-04-27 17:34:01 +00:00
Richard Barton f435b09eaf Refactor IT handling not to store the bottom bit of the condition code in the mask operand in the MCInst. 
llvm-svn: 155700
 2012-04-27 08:42:59 +00:00
Richard Barton ba5b0cc82e Unify internal representation of ARM instructions with a register right-shifted by #32. These are stored as shifts by #0 in the MCInst and correctly marshalled when transforming from or to assembly representation. 
llvm-svn: 155565
 2012-04-25 18:00:18 +00:00
Craig Topper 3ec7c2aa84 Add ifdef around getSubtargetFeatureName in tablegen output file so that only targets that want the function get it. This prevents other targets from getting an unused function warning. 
llvm-svn: 155538
 2012-04-25 06:56:34 +00:00
Jim Grosbach 5117ef7453 ARM: improved assembler diagnostics for missing CPU features. 
When an instruction match is found, but the subtarget features it
requires are not available (missing floating point unit, or thumb vs arm
mode, for example), issue a diagnostic that identifies what the feature
mismatch is.

rdar://11257547

llvm-svn: 155499
 2012-04-24 22:40:08 +00:00
Jim Grosbach 003607f474 ARM handle :lower16: and :upper16: after a '#' prefix. 
rdar://11252521

llvm-svn: 154862
 2012-04-16 21:18:46 +00:00
Benjamin Kramer 673824b4a1 Wire up support for diagnostic ranges in the ARMAsmParser. 
As an example, attach range info to the "invalid instruction" message:

$ clang -arch arm -c asm.c
asm.c:2:11: error: invalid instruction
  __asm__("foo r0");
          ^
<inline asm>:1:2: note: instantiated into assembly here
        foo r0
        ^~~

llvm-svn: 154765
 2012-04-15 17:04:27 +00:00
Jim Grosbach ad66de155b ARM add missing Thumb1 two-operand aliases for shift-by-immediate. 
rdar://11222742

llvm-svn: 154457
 2012-04-11 00:15:16 +00:00
Evan Cheng aca6c822e6 Fix a number of problems with ARM fused multiply add/subtract instructions. 
1. The new instruction itinerary entries are not properly described.
2. The asm parser can't handle vfms and vfnms.
3. There were no assembler, disassembler test cases.
4. HasNEON2 has the wrong assembler predicate.
rdar://10139676

llvm-svn: 154456
 2012-04-11 00:13:00 +00:00
Jim Grosbach df5a244797 ARM fix cc_out operand handling for t2SUBrr instructions. 
We were incorrectly conflating some add variants which don't have a
cc_out operand with the mirroring sub encodings, which do. Part of the
awesome non-orthogonality legacy of thumb1. Similarly, handling of
add/sub of an immediate was sometimes incorrectly removing the cc_out
operand for add/sub register variants.

rdar://11216577

llvm-svn: 154411
 2012-04-10 17:31:55 +00:00
Jim Grosbach 930f2f66e7 ARM assembly aliases for add negative immediates using sub. 
'add r2, #-1024' should just use 'sub r2, #1024' rather than erroring out.
Thumb1 aliases for adding a negative immediate to the stack pointer,
also.

rdar://11192734

llvm-svn: 154123
 2012-04-05 20:57:13 +00:00
Jim Grosbach 3d00eecc53 ARM assembly parsing for 'msr' plain 'cpsr' operand. 
Plain 'cpsr' is an alias for 'cpsr_fc'.

rdar://11153753

llvm-svn: 154080
 2012-04-05 03:17:53 +00:00
Jim Grosbach fdaab531b7 ARM assembler should prefer non-aliases encoding of cmp. 
When an immediate is both a value [t2_]so_imm and a [t2_]so_imm_neg,
we want to use the non-negated form to make sure we prefer the normal
encoding, not the aliased encoding via the negation of, e.g., 'cmp.w'.

llvm-svn: 153770
 2012-03-30 19:59:02 +00:00
Jim Grosbach 74005ae691 ARM can only use narrow encoding for low regs. 
llvm-svn: 153765
 2012-03-30 18:39:43 +00:00
Jim Grosbach def5e34812 ARM integrated assembler should encoding choice for add/sub imm. 
For 'adds r2, r2, #56' outside of an IT block, the 16-bit encoding T2
can be used for this syntax. Prefer the narrow encoding when possible.

rdar://11156277

llvm-svn: 153759
 2012-03-30 17:20:40 +00:00
Jim Grosbach 199ab90946 ARM assembly parsing needs to be paranoid about negative immediates. 
Make sure to treat immediates as unsigned when doing relative comparisons.

rdar://11153621

llvm-svn: 153753
 2012-03-30 16:31:31 +00:00
Jim Grosbach 0b0298302c ARM assembly 'cmp lr, #0' should not encode using 'cmn'. 
The CMP->CMN alias was matching for an immediate of zero when it
should only match for negative values.

rdar://11129224

llvm-svn: 153689
 2012-03-29 21:19:52 +00:00
Kevin Enderby 816ca27ef6 Fix assembling ARM vst2 instructions with double-spaced registers. 
llvm-svn: 153099
 2012-03-20 17:41:51 +00:00
Jim Grosbach 67e76babd3 ARM assembly, accept optional '#' on lane index number. 
rdar://11057160

llvm-svn: 153053
 2012-03-19 20:39:53 +00:00
Jim Grosbach 905686a82a ARM ldm/stm register lists can be out of order. 
It's not a good style idea, as the registers will be laid down in memory in
numerical order, not the order they're in the list, but it's legal. vldm/vstm
are stricter.

rdar://11064740

llvm-svn: 152943
 2012-03-16 20:48:38 +00:00
Jim Grosbach d28888dd77 ARM case-insensitive checking for APSR_nzcv. 
rdar://11056591

llvm-svn: 152846
 2012-03-15 21:34:14 +00:00
Jim Grosbach d74560b170 ARM aliases for pre-unified syntax fcmpz[sd] mnemonics. 
rdar://11056647

llvm-svn: 152834
 2012-03-15 20:48:18 +00:00
Jim Grosbach ed428bc1ce ARM more NEON VLD/VST composite physical register refactoring. 
Register pair, all lanes subscripting.

llvm-svn: 152157
 2012-03-06 23:10:38 +00:00
Jim Grosbach 13a292cc74 ARM refactor more NEON VLD/VST instructions to use composite physregs 
Register pair VLD1/VLD2 all-lanes instructions. Kill off more of the
pseudos as a result.

llvm-svn: 152150
 2012-03-06 22:01:44 +00:00
Jim Grosbach e5307f9019 ARM Refactor VLD/VST spaced pair instructions. 
Use the new composite physical registers.

llvm-svn: 152063
 2012-03-05 21:43:40 +00:00
Jim Grosbach c71bf4739a ARM Remove a bit of dead code. 
llvm-svn: 152061
 2012-03-05 21:09:58 +00:00
Jim Grosbach c988e0c521 ARM refactor away a bunch of VLD/VST pseudo instructions. 
With the new composite physical registers to represent arbitrary pairs
of DPR registers, we don't need the pseudo-registers anymore. Get rid of
a bunch of them that use DPR register pairs and just use the real
instructions directly instead.

llvm-svn: 152045
 2012-03-05 19:33:30 +00:00
Craig Topper e55c556a24 Convert assert(0) to llvm_unreachable 
llvm-svn: 149961
 2012-02-07 02:50:20 +00:00
Jim Grosbach a2147ce313 Tidy up. One more return type mismatch fix. 
llvm-svn: 149452
 2012-01-31 23:51:09 +00:00
Jim Grosbach 5e5eabb5ab Keep source information, if available, around for ARM Fixups. 
Adjust an example MachObjectWriter diagnostic to use the information
to issue a better message.

Before:
LLVM ERROR: unknown ARM fixup kind!

After:
x.s:6:5: error: unsupported relocation on symbol
    beq bar
    ^

rdar://9800182

llvm-svn: 149093
 2012-01-26 23:20:15 +00:00
Jim Grosbach c8f2b7877b Tidy up. Fix mismatched return types for error handling. 
llvm-svn: 149062
 2012-01-26 15:56:45 +00:00
Jim Grosbach 82f76d1275 ARM assemly parsing and validation of IT instruction. 
"Although a Thumb2 instruction, the IT mnemonic shall be permitted in
ARM mode, and the condition verified to match the condition code(s)
on the following instruction(s)."

PR11853

llvm-svn: 148969
 2012-01-25 19:52:01 +00:00
Jim Grosbach 086cbfac7d NEON VLD4(all lanes) assembly parsing and encoding. 
llvm-svn: 148884
 2012-01-25 00:01:08 +00:00
Jim Grosbach b78403ce48 NEON VLD3(all lanes) assembly parsing and encoding. 
llvm-svn: 148882
 2012-01-24 23:47:04 +00:00
Jim Grosbach 8e2722cdb0 NEON VST4(one lane) assembly parsing and encoding. 
llvm-svn: 148836
 2012-01-24 18:53:13 +00:00
Jim Grosbach 14952a0e32 NEON VLD4(one lane) assembly parsing and encoding. 
llvm-svn: 148832
 2012-01-24 18:37:25 +00:00
Jim Grosbach da70eac268 NEON VST4(multiple 4 element structures) assembly parsing. 
llvm-svn: 148764
 2012-01-24 00:58:13 +00:00
Jim Grosbach ed561fc850 NEON VLD4(multiple 4 element structures) assembly parsing. 
llvm-svn: 148762
 2012-01-24 00:43:17 +00:00
Jim Grosbach 1e946a4f91 Tidy up. Remove some vertical space for readability. 
llvm-svn: 148761
 2012-01-24 00:43:12 +00:00
Jim Grosbach d3d36d9315 NEON VST3(single element from one lane) assembly parsing. 
llvm-svn: 148755
 2012-01-24 00:07:41 +00:00
Jim Grosbach 1a74724fc9 NEON VST3(multiple 3-element structures) assembly parsing. 
llvm-svn: 148748
 2012-01-23 23:45:44 +00:00
Jim Grosbach ac2af3ffab NEON VLD3(multiple 3-element structures) assembly parsing. 
llvm-svn: 148745
 2012-01-23 23:20:46 +00:00
Jim Grosbach a8b444b08b NEON VLD3 lane-indexed assembly parsing and encoding. 
llvm-svn: 148734
 2012-01-23 21:53:26 +00:00
Jim Grosbach d28ef9ac46 Simplify some NEON assembly pseudo definitions. 
Let the generic token alias definitions handle the data subtype
suffices. We don't need explicit versions for each.

llvm-svn: 148718
 2012-01-23 19:39:08 +00:00
Jim Grosbach 78dcaed8ca Thumb2 'add rd, pc, imm' alternate form for 'adr' instruction. 
llvm-svn: 148601
 2012-01-21 00:07:56 +00:00
David Blaikie 46a9f016c5 More dead code removal (using -Wunreachable-code) 
llvm-svn: 148578
 2012-01-20 21:51:11 +00:00
Jim Grosbach a9d36fbca7 NEON use vmov.i32 to splat some f32 values into vectors. 
For bit patterns that aren't representable using the 8-bit floating point
representation for vmov.f32, but are representable via vmov.i32, treat
the .f32 syntax as an alias. Most importantly, this covers the case
'vmov.f32 Vd, #0.0'.

rdar://10616677

llvm-svn: 148556
 2012-01-20 18:09:51 +00:00
Jim Grosbach 235c8d2d94 ARM assembly diagnostic caret in better position for FPImm. 
llvm-svn: 148459
 2012-01-19 02:47:30 +00:00
Jim Grosbach 94298a906a Thumb2 alternate syntax for LDR(literal) and friends. 
Explicit pc-relative syntax. For example, "ldrb r2, [pc, #-22]".

rdar://10250964

llvm-svn: 148432
 2012-01-18 22:46:46 +00:00
David Blaikie 486df738c3 Removing unused default switch cases in switches over enums that already account for all enumeration values explicitly. 
(This time I believe I've checked all the -Wreturn-type warnings from GCC & added the couple of llvm_unreachables necessary to silence them. If I've missed any, I'll happily fix them as soon as I know about them)

llvm-svn: 148262
 2012-01-16 23:24:27 +00:00
Matt Beaumont-Gay b982d8eb65 Fix malformed assert. 
If anybody has strong feelings about 'default: assert(0 && "blah")' vs
'default: llvm_unreachable("blah")', feel free to regularize the instances of
each in this file.

llvm-svn: 147459
 2012-01-03 19:03:59 +00:00
Jim Grosbach ea2319112f ARM VFP assembly parsing and encoding for VCVT(float <--> fixed point). 
rdar://10558523

llvm-svn: 147189
 2011-12-22 22:19:05 +00:00
Jim Grosbach c4d8d2f155 Tidy up. Use predicate function a bit more liberally. 
llvm-svn: 147184
 2011-12-22 22:02:35 +00:00
Jim Grosbach 489ed5929e ARM pre-UAL aliases. fcmp[sd]. 
llvm-svn: 147158
 2011-12-22 19:20:45 +00:00
Jim Grosbach 12ccf45bbb ARM assembler should accept shift-by-zero for any shifted-immediate operand. 
Just treat it as-if the shift wasn't there at all. 'as' compatibility.

rdar://10604767

llvm-svn: 147153
 2011-12-22 18:04:04 +00:00
Jim Grosbach 21488b8839 ARM assembly parser canonicallize on 'lsl' for shift-by-zero form. 
llvm-svn: 147152
 2011-12-22 17:37:00 +00:00
Jim Grosbach 3794d82af5 Tidy up. Trailing whitespace. 
llvm-svn: 147151
 2011-12-22 17:17:10 +00:00
Jim Grosbach 62bffd8827 Nuke invalid comment from copy/paste. 
llvm-svn: 147150
 2011-12-22 17:04:50 +00:00
Jim Grosbach 1152cc0cad ARM asm parser should be more lenient w/ .thumb_func directive. 
Rather than require the symbol to be explicitly an argument of the directive,
allow it to look ahead and grab the symbol from the next non-whitespace
line.

rdar://10611140

llvm-svn: 147100
 2011-12-21 22:30:16 +00:00
Jim Grosbach 8c59bbc1ed Thumb2 assembly parsing of 'mov rd, rn, rrx'. 
Maps to the RRX instruction. Missed this case earlier.

rdar://10615373

llvm-svn: 147096
 2011-12-21 21:04:19 +00:00
Jim Grosbach b3ef713e44 Thumb2 assembly parsing of 'mov(register shifted register)' aliases. 
These map to the ASR, LSR, LSL, ROR instruction definitions.

rdar://10615373

llvm-svn: 147094
 2011-12-21 20:54:00 +00:00
Jim Grosbach 7de7ab83fa ARM assembly parsing allows constant expressions for lane indices. 
llvm-svn: 147028
 2011-12-21 01:19:23 +00:00
Jim Grosbach c5af54ec89 ARM NEON VLD2 assembly parsing for structure to all lanes, non-writeback. 
llvm-svn: 147025
 2011-12-21 00:38:54 +00:00
Jim Grosbach cd22e4a81e ARM .req register name aliases are case insensitive, just like regnames. 
llvm-svn: 147009
 2011-12-20 23:11:00 +00:00
Jim Grosbach 4eda145c7f Move comment to appropriate place. 
llvm-svn: 147000
 2011-12-20 22:26:38 +00:00
Jim Grosbach 2c59052984 ARM assembly parsing and encoding for VST2 single-element, double spaced. 
llvm-svn: 146990
 2011-12-20 20:46:29 +00:00
Jim Grosbach 75e2ab5db2 ARM assembly parsing and encoding for VLD2 single-element, double spaced. 
llvm-svn: 146983
 2011-12-20 19:21:26 +00:00
Jason W Kim 135d244b56 First steps in ARM AsmParser support for .eabi_attribute and .arch 
(Both used for Linux gnueabi)
No behavioral change yet (no tests need so far)

llvm-svn: 146977
 2011-12-20 17:38:12 +00:00
Jim Grosbach e2ca9e5b5f ARM assembly shifts by zero should be plain 'mov' instructions. 
"mov r1, r2, lsl #0" should assemble as "mov r1, r2" even though it's
not strictly legal UAL syntax. It's a common extension and the friendly
thing to do.

rdar://10604663

llvm-svn: 146937
 2011-12-20 00:59:38 +00:00
Jim Grosbach 045b6c71a6 ARM NEON assembly aliases for VMOV<-->VMVN for i32 immediates. 
e.g., "vmov.i32 d4, #-118" can be assembled as "vmvn.i32 d4, #117"

rdar://10603913

llvm-svn: 146925
 2011-12-19 23:51:07 +00:00
Jim Grosbach 8648c10184 ARM assembly parsing and encoding support for LDRD(label). 
rdar://9932658

llvm-svn: 146921
 2011-12-19 23:06:24 +00:00
Jim Grosbach e16acacc3a ARM VFP pre-UAL mnemonic aliases for fmul[sd]. 
llvm-svn: 146892
 2011-12-19 19:43:50 +00:00
Jim Grosbach 92a939ae73 ARM VFP pre-UAL mnemonic aliases for fcpy[sd] and fdiv[sd]. 
llvm-svn: 146887
 2011-12-19 19:02:41 +00:00
Jim Grosbach cef98cddbe ARM NEON relax parse time diagnostics for alignment specifiers. 
There's more variation that we need to handle. Error checking will need
to be on operand predicates.

llvm-svn: 146884
 2011-12-19 18:31:43 +00:00
Jim Grosbach c2f16a3499 Silence warning. 
llvm-svn: 146686
 2011-12-15 21:54:55 +00:00
Jim Grosbach 2f50e92f40 ARM NEON two-register double spaced register list parsing support. 
llvm-svn: 146685
 2011-12-15 21:44:33 +00:00
Jim Grosbach da51104282 ARM NEON better assembly operand range checking for lane indices of VLD/VST. 
llvm-svn: 146608
 2011-12-14 23:35:06 +00:00
Jim Grosbach a8aa30b620 ARM NEON VLD2/VST2 lane indexed assembly parsing and encoding. 
llvm-svn: 146605
 2011-12-14 23:25:46 +00:00
Jim Grosbach ab5830e51b ARM assembler support for the target-specific .req directive. 
rdar://10549683

llvm-svn: 146543
 2011-12-14 02:16:11 +00:00
Jim Grosbach 485e5622f4 Thumb2 assembler aliases for "mov(shifted register)" 
rdar://10549767

llvm-svn: 146520
 2011-12-13 22:45:11 +00:00
Jim Grosbach 18bf363078 ARM LDM/STM system instruction variants. 
rdar://10550269

llvm-svn: 146519
 2011-12-13 21:48:29 +00:00
Jim Grosbach 5ac89675a0 Thumb2 tweak for ccout handling in RSB parsing. 
llvm-svn: 146516
 2011-12-13 21:06:41 +00:00
Jim Grosbach 1f1a3598c2 ARM thumb2 parsing of "rsb rd, rn, #0". 
rdar://10549741

llvm-svn: 146515
 2011-12-13 20:50:38 +00:00
Jim Grosbach 2a2348e6c2 ARM add some more pre-UAL VFP mnemonics for convenience when porting old code. 
llvm-svn: 146508
 2011-12-13 20:13:48 +00:00
Jim Grosbach 54337b8617 ARM add some more pre-UAL VFP mnemonics for convenience when porting old code. 
llvm-svn: 146300
 2011-12-10 00:01:02 +00:00
Jim Grosbach 8be2f6577e ARM add some pre-UAL VFP mnemonics for convenience when porting old code. 
llvm-svn: 146296
 2011-12-09 23:34:09 +00:00
Jim Grosbach ef70e9b704 ARM allows '' syntax, not just '#imm' for assembly. 
Backwards compatibility with 'gas'. #imm is the preferered and documented
syntax, but lots of existing code uses the '$' prefix, so we should
support it if we can.

llvm-svn: 146285
 2011-12-09 22:25:03 +00:00
Jim Grosbach 8cc83fa1b7 ARM convenience aliases for VSQRT. 
llvm-svn: 146201
 2011-12-08 22:51:25 +00:00
Jim Grosbach ba7d6ed05d ARM VSHR implied destination operand form aliases. 
llvm-svn: 146192
 2011-12-08 22:06:06 +00:00
Jim Grosbach 98bc797b4d ARM asm parser, just issue a warning for a duplicate reg in a list. 
For better 'gas' compatibility.

llvm-svn: 146185
 2011-12-08 21:34:20 +00:00
Jim Grosbach 4edc7360c7 ARM assembler support for register name aliases. 
rdar://10550084

llvm-svn: 146170
 2011-12-08 19:27:38 +00:00
Jim Grosbach 00326406d4 ARM NEON two-operand aliases for VSHL(immediate). 
llvm-svn: 146125
 2011-12-08 01:30:04 +00:00
Jim Grosbach 9a6ba3c94e ARM VFP support 'fmrs/fmsr' aliases for 'vldr' 
llvm-svn: 146116
 2011-12-08 00:52:55 +00:00
Jim Grosbach 086d013e56 ARM VFP support 'flds/fldd' aliases for 'vldr' 
llvm-svn: 146115
 2011-12-08 00:49:29 +00:00
Jim Grosbach 3050625a50 ARM assembler aliases for "add Rd, #-imm" to "sub Rd, #imm". 
llvm-svn: 146111
 2011-12-08 00:31:07 +00:00
Jim Grosbach 3b559ff3c5 ARM assembly, allow 'asl' as a synonym for 'lsl' in shifted-register operands. 
For 'gas' compatibility.

llvm-svn: 146106
 2011-12-07 23:40:58 +00:00
Jim Grosbach 7f882399b8 ARM support the .arm and .thumb directives for assembly mode switching. 
llvm-svn: 146042
 2011-12-07 18:04:19 +00:00
Jim Grosbach d4b8249434 ARM: NEON SHLL instruction immediate operand range checking. 
llvm-svn: 146003
 2011-12-07 01:07:24 +00:00
Jim Grosbach 175c7d0da5 Thumb2 encoding choice correction for PLD. 
Using encoding T1 for offset of #0 and encoding T2 for #-0.

rdar://10532413

llvm-svn: 145919
 2011-12-06 04:49:29 +00:00
Jim Grosbach b8c719ccc6 Tweak ADDrr fix. Bad check for explicit .w 
llvm-svn: 145863
 2011-12-05 22:27:04 +00:00
Jim Grosbach e489babf9b Thumb2 prefer ADD register encoding T2 to T3 when possible. 
rdar://10529664

llvm-svn: 145860
 2011-12-05 22:16:39 +00:00
Jim Grosbach ec9ba98299 Thumb2 prefer encoding T3 to T4 for ADD/SUB immediate instructions. 
rdar://10529348

llvm-svn: 145851
 2011-12-05 21:06:26 +00:00
Jim Grosbach 9dff9f4c41 ARM NEON VEXT aliases for data type suffices. 
llvm-svn: 145726
 2011-12-02 23:34:39 +00:00
Jim Grosbach eb53822f5a ARM VST1 single lane assembly parsing. 
llvm-svn: 145718
 2011-12-02 22:34:51 +00:00
Jim Grosbach dda976b804 ARM VLD1 single lane assembly parsing. 
llvm-svn: 145712
 2011-12-02 22:01:52 +00:00
Jim Grosbach e7dcbc8691 Clean up aliases for ARM VLD1 single-lane assembly parsing a bit. 
Add the 16-bit lane variants while I'm at it.

llvm-svn: 145693
 2011-12-02 18:52:30 +00:00
Jim Grosbach 04945c42c6 ARM start parsing VLD1 single lane instructions. 
The alias pseudos need cleaned up for size suffix handling, but this gets
the basics working. Will be cleaning up and adding more.

llvm-svn: 145655
 2011-12-02 00:35:16 +00:00
Jim Grosbach 3ecf976ca9 ARM parsing for VLD1 two register all lanes, no writeback. 
llvm-svn: 145504
 2011-11-30 18:21:25 +00:00
Jim Grosbach cd6f5e757c ARM parsing aliases for VLD1 single register all lanes. 
llvm-svn: 145464
 2011-11-30 01:09:44 +00:00
Jim Grosbach 182b6a077e Tidy up a bit. 
llvm-svn: 145458
 2011-11-29 23:51:09 +00:00
Jim Grosbach 01e0439240 Clean up debug printing of ARM shifted operands. 
llvm-svn: 144836
 2011-11-16 21:46:50 +00:00
Jim Grosbach 1a2f9ee3c8 ARM assembly parsing for RRX mnemonic. 
rdar://9704684

llvm-svn: 144812
 2011-11-16 19:05:59 +00:00
Jim Grosbach abcac56869 ARM mode aliases for bitwise instructions w/ register operands. 
rdar://9704684

llvm-svn: 144803
 2011-11-16 18:31:45 +00:00
Jim Grosbach e891fe8d6c ARM assembly parsing for register range syntax for VLD/VST register lists. 
For example,
vld1.f64 {d2-d5}, [r2,:128]!

Should be equivalent to:
vld1.f64 {d2,d3,d4,d5}, [r2,:128]!

It's not documented syntax in the ARM ARM, but it is consistent with what's
accepted for VLDM/VSTM and is unambiguous in meaning, so it's a good thing to
support.

rdar://10451128

llvm-svn: 144727
 2011-11-15 23:19:15 +00:00
Jim Grosbach 8279c1828f ARM accept an immediate offset in memory operands w/o the '#'. 
llvm-svn: 144709
 2011-11-15 22:14:41 +00:00
Jim Grosbach 8d579230c6 ARM enclosing curly braces optional on one-register VLD/VST instruction lists. 
'vld1.f32 d4, [r7]' should be parsed as equivalent to 'vld1.f32 {d4}, [r7]'

rdar://10450488.

llvm-svn: 144701
 2011-11-15 21:45:55 +00:00
Jim Grosbach a92a5d8548 Fix typo. 
llvm-svn: 144695
 2011-11-15 21:01:30 +00:00
Jim Grosbach efa7e95d06 Thumb2 two-operand 'mul' instruction wide encoding parsing. 
rdar://10449724

llvm-svn: 144684
 2011-11-15 19:55:16 +00:00
Jim Grosbach 6efa7b9852 Thumb2 assembly parsing for mul.w in IT block fix. 
When the 3rd operand is not a low-register, and the first two operands are
the same low register, the parser was incorrectly trying to use the 16-bit
instruction encoding.

rdar://10449281

llvm-svn: 144679
 2011-11-15 19:29:45 +00:00
Jim Grosbach ee201faeac Tidy up. 80 column. 
llvm-svn: 144538
 2011-11-14 17:52:47 +00:00
Jim Grosbach 3a3d8e82bc ARM refactor simple immediate asm operand render methods. 
These immediate operands all use the same simple logic for rendering to
MCInst, so have them share the method for doing so.

llvm-svn: 144439
 2011-11-12 00:58:43 +00:00
Jim Grosbach 12952fef71 ARM vldm and vstm VFP instructions can take a data type suffix. 
It's ignored by the assembler when present, but is legal syntax. Other
instructions have something similar, but for some mnemonics it's
only sometimes not significant, so this quick check in the parser will
need refactored into something more robust soon-ish. This gets some
basics working in the meantime.

Partial for rdar://10435264

llvm-svn: 144422
 2011-11-11 23:08:10 +00:00
Jim Grosbach b68eeb3852 Nuke no longer accurate comment. 
llvm-svn: 144411
 2011-11-11 22:30:06 +00:00
Jim Grosbach 85a2343b01 ARM allow Q registers in vldm/vstm register lists. 
rdar://9672822

llvm-svn: 144407
 2011-11-11 21:27:40 +00:00
Jim Grosbach d9a9be269c Thumb2 ldm/stm updating w/ one register in the list are LDR/STR. 
rdar://10429490

llvm-svn: 144338
 2011-11-10 23:58:34 +00:00
Jim Grosbach afad053141 ARM let processInstruction() tranforms chain. 
llvm-svn: 144337
 2011-11-10 23:42:14 +00:00
Jim Grosbach 9bded9dc24 Thumb2 parsing for push/pop w/ hi registers in the reglist. 
rdar://10130228.

llvm-svn: 144331
 2011-11-10 23:17:11 +00:00
Jim Grosbach a113eb0205 Thumb1 diagnostics for reglist on PUSH/POP fix. 
Was not checking the first register in the register list.

llvm-svn: 144329
 2011-11-10 23:01:27 +00:00
Jim Grosbach 5a5ce63742 Thumb MUL assembly parsing for 3-operand form. 
Get the source register that isn't tied to the destination register correct,
even when the assembly source operand order is backwards.

rdar://10428630

llvm-svn: 144322
 2011-11-10 22:10:12 +00:00
Jim Grosbach 42ba6286b6 ARM .thumb_func directive for quoted symbol names. 
Use the getIdentifier() method of the token, not getString(), otherwise
we keep the quotes as part of the symbol name, which we don't want.

rdar://10428015

llvm-svn: 144315
 2011-11-10 20:48:53 +00:00
Jim Grosbach c14871cc67 ARM assembly parsing for LSR/LSL/ROR(immediate). 
More of rdar://9704684

llvm-svn: 144301
 2011-11-10 19:18:01 +00:00
Jim Grosbach 61db5a59f7 ARM assembly parsing for ASR(immediate). 
Start of rdar://9704684

llvm-svn: 144293
 2011-11-10 16:44:55 +00:00
Benjamin Kramer 20baffb257 Replace (Lower|Upper)caseString in favor of StringRef's newest methods. 
llvm-svn: 143891
 2011-11-06 20:37:06 +00:00
Jim Grosbach 5c6b6346bc ARM label operands can be quoted. 
For example, labels from Objective-C sources.

llvm-svn: 143511
 2011-11-01 22:38:31 +00:00
Jim Grosbach 7f1f3bd868 ARM label operands can have an optional '#' before them. 
llvm-svn: 143510
 2011-11-01 22:37:37 +00:00
Jim Grosbach fb2f1d61f4 ARM VLD/VST assembly parsing for symbolic address operands. 
llvm-svn: 143413
 2011-11-01 01:24:45 +00:00
Jim Grosbach 05df460269 ARM VST1 w/ writeback assembly parsing and encoding. 
llvm-svn: 143369
 2011-10-31 21:50:31 +00:00
Jim Grosbach 3d785edee2 ARM mode 'mov' to 'mvn' assembler alias. 
llvm-svn: 143237
 2011-10-28 22:50:54 +00:00
Jim Grosbach b009a872d7 Add Thumb2 alias for "mov Rd, #imm" to "mvn Rd, #~imm". 
When '~imm' is encodable as a t2_so_imm but plain 'imm' is not. For example,
  mov r2, #-3
becomes
  mvn r2, #2

rdar://10349224

llvm-svn: 143235
 2011-10-28 22:36:30 +00:00
Jim Grosbach 080a499ee0 ARM Allow 'q' registers in VLD/VST vector lists. 
Just treat it as if the constituent D registers where specified.

rdar://10348896

llvm-svn: 143167
 2011-10-28 00:06:50 +00:00
Jim Grosbach 61fdba048f Thumb2 ldr pc-relative encoding fixes. 
We were parsing label references to the i12 encoding, which isn't right.
They need to go to the pci variant instead.

More of rdar://10348687

llvm-svn: 143068
 2011-10-26 22:22:01 +00:00
Jim Grosbach 4e380354a9 ARM parse parenthesized expressions for label references. 
Partial fix for rdar://10348687.

llvm-svn: 143063
 2011-10-26 21:14:08 +00:00
Jim Grosbach 3ea0657d54 ARM assembly parsing and encoding for VLD1 w/ writeback. 
One and two length register list variants.

llvm-svn: 142861
 2011-10-24 22:16:58 +00:00
Benjamin Kramer 0d6d098841 Move various generated tables into read-only memory, fixing up const correctness along the way. 
llvm-svn: 142726
 2011-10-22 16:50:00 +00:00
Jim Grosbach 118b38cbf1 Assembly parsing for 2-register sequential variant of VLD2. 
llvm-svn: 142691
 2011-10-21 22:21:10 +00:00
Jim Grosbach 846bcff7c7 Assembly parsing for 4-register variant of VLD1. 
llvm-svn: 142682
 2011-10-21 20:35:01 +00:00
Jim Grosbach c4360fe575 Assembly parsing for 3-register variant of VLD1. 
llvm-svn: 142675
 2011-10-21 20:02:19 +00:00
Jim Grosbach 2f2e3c4737 ARM VLD parsing and encoding. 
Next step in the ongoing saga of NEON load/store assmebly parsing. Handle
VLD1 instructions that take a two-register register list.

Adjust the instruction definitions to only have the single encoded register
as an operand. The super-register from the pseudo is kept as an implicit def,
so passes which come after pseudo-expansion still know that the instruction
defines the other subregs.

llvm-svn: 142670
 2011-10-21 18:54:25 +00:00
Owen Anderson 03a173eb71 Don't automatically set the "fc" bits on MSR instructions if the user didn't ask for them. This is a divergence from gas' behavior, but it is correct per the documentation and allows us to forge ahead with roundtrip testing. 
llvm-svn: 142669
 2011-10-21 18:43:28 +00:00
Jim Grosbach e6d88c9a51 Nuke an #if0 that got accidentally left in. 
llvm-svn: 142658
 2011-10-21 16:59:08 +00:00
Jim Grosbach ad47cfcef9 ARM VTBL (one register) assembly parsing and encoding. 
llvm-svn: 142441
 2011-10-18 23:02:30 +00:00
Jim Grosbach e4454e0de2 ARM assembly parsing and encoding for VMOV.i64. 
llvm-svn: 142356
 2011-10-18 16:18:11 +00:00
Jim Grosbach 8211c051ca ARM assembly parsing and encoding for VMOV/VMVN/VORR/VBIC.i32. 
llvm-svn: 142321
 2011-10-18 00:22:00 +00:00
Jim Grosbach cda32ae372 ARM assembly parsing and encoding for VMOV/VMVN/VORR/VBIC.i16. 
llvm-svn: 142303
 2011-10-17 23:09:09 +00:00
Jim Grosbach f18eec158c Tidy up. 
llvm-svn: 142297
 2011-10-17 22:41:42 +00:00
Jim Grosbach 741cd73aab ARM NEON "vmov.i8" immediate assembly parsing and encoding. 
NEON immediates are "interesting". Start of the work to handle parsing them
in an 'as' compatible manner. Getting the matcher to play nicely with
these and the floating point immediates from VFP is an extra fun wrinkle.

llvm-svn: 142293
 2011-10-17 22:26:03 +00:00
Chad Rosier 34957911e7 Removed set, but unused variables. 
Patch by Joe Abbey <jabbey@arxan.com>.

llvm-svn: 142223
 2011-10-17 18:48:30 +00:00
Jim Grosbach 54a20ed0f1 Thumb2 assembly parsing and encoding for LDC/STC. 
llvm-svn: 141811
 2011-10-12 20:54:17 +00:00
Jim Grosbach 483995875f ARM parsing and encoding for the <option> form of LDC/STC instructions. 
llvm-svn: 141786
 2011-10-12 17:34:41 +00:00
Jim Grosbach 9398141c48 ARM assembly parsing and encoding for LDC{2}{L}/STC{2}{L} instructions. 
Fill out the rest of the encoding information, update to properly mark
the LDC/STC instructions as predicable while the LDC2/STC2 instructions are
not, and adjust the parser accordingly.

llvm-svn: 141721
 2011-10-11 21:55:36 +00:00
Jim Grosbach a95ec99a96 ARM parse alignment specifier for NEON load/store instructions. 
llvm-svn: 141682
 2011-10-11 17:29:55 +00:00
Jim Grosbach 871dff76df ARM Rename operand sub-structure 'Mem' to 'Memory' for a bit more clarity. 
llvm-svn: 141671
 2011-10-11 15:59:20 +00:00
Jim Grosbach c11b7c3805 Simplify operand Kind checks a bit. 
llvm-svn: 141592
 2011-10-10 23:06:42 +00:00
Jim Grosbach d0637bfc68 ARM NEON assembly parsing and encoding for VDUP(scalar). 
llvm-svn: 141446
 2011-10-07 23:56:00 +00:00
Jim Grosbach 6e5778f7b1 ARM prefix asmparser operand kind enums for readability. 
llvm-svn: 141438
 2011-10-07 23:24:09 +00:00
Jim Grosbach b8d9f51e4c Improve ARM assembly parser diagnostic for unexpected tokens. 
Consider:
  mov r8, r11 fred

Previously, we issued the not very informative:
x.s:6:1: error: unexpected token in argument list

^

Now we generate:
x.s:5:14: error: unexpected token in argument list
  mov r8, r11 fred
              ^

llvm-svn: 141380
 2011-10-07 18:27:04 +00:00
Owen Anderson 10c5b12f99 Support a valid, but not very useful, encoding of CPSIE where none of the AIF bits are set. 
llvm-svn: 141190
 2011-10-05 17:16:40 +00:00
Jim Grosbach e7fbce7acb ARM assembly parsing and encoding for VMOV immediate. 
llvm-svn: 141046
 2011-10-03 23:38:36 +00:00
Jim Grosbach 46b6646059 ARM parsing/encoding for VCMP/VCMPE. 
llvm-svn: 141038
 2011-10-03 22:30:24 +00:00
Jim Grosbach 4ab23b5273 ARM assembly parsing and encoding for VMRS/FMSTAT. 
llvm-svn: 141025
 2011-10-03 21:12:43 +00:00
James Molloy 21efa7d6e1 Check in a patch that has already been code reviewed by Owen that I'd forgotten to commit. 
Build on previous patches to successfully distinguish between an M-series and A/R-series MSR and MRS instruction. These take different mask names and have a *slightly* different opcode format.

Add decoder and disassembler tests.

Improvement on the previous patch - successfully distinguish between valid v6m and v7m masks (one is a subset of the other). The patch had to be edited slightly to apply to ToT.

llvm-svn: 140696
 2011-09-28 14:21:38 +00:00
Owen Anderson f01e2de5e6 ASR #32 is not allowed on Thumb2 USAT and SSAT instructions. 
llvm-svn: 140560
 2011-09-26 21:06:22 +00:00
Owen Anderson 4916840eb8 Teach the Thumb2 AsmParser to accept pre-indexed loads/stores with an offset of #-0. 
llvm-svn: 140426
 2011-09-23 22:25:02 +00:00
Jim Grosbach b35198021a Thumb2 assembly parsing and encoding for UXTAB/UXTAB16/UXTH/UXTB/UXTB16/UXTH. 
llvm-svn: 140125
 2011-09-20 00:46:54 +00:00
Jim Grosbach fc5451832a Thumb2 assembly parsing and encoding for UMAAL/UMLAL/UMULL. 
llvm-svn: 140095
 2011-09-19 23:31:02 +00:00
Jim Grosbach 05541f45f3 Thumb2 assembly parsing and encoding for TBB/TBH. 
llvm-svn: 140078
 2011-09-19 22:21:13 +00:00
Jim Grosbach 8221319707 Thumb2 assembly parsing and encoding for SXTB/SXTB16/SXTH. 
llvm-svn: 140047
 2011-09-19 20:29:33 +00:00
Jim Grosbach 40700e0992 ARM asm parsing should handle pre-indexed writeback w/o immediate. 
For example, 'ldrb r9, [sp]!' is odd, but valid.

llvm-svn: 140035
 2011-09-19 18:42:21 +00:00
Jim Grosbach d0c435c23c Thumb2 assembly parsing and encoding for SUB(immediate). 
llvm-svn: 139966
 2011-09-16 22:58:42 +00:00
Jim Grosbach 9c0b86a76d Thumb2 assembly parsing and encoding for STR. 
More addressing mode encoding bits. Handle pre increment for STR/STRB/STRH
and STR(register).

llvm-svn: 139949
 2011-09-16 21:55:56 +00:00
Jim Grosbach 099c9767c3 Thumb2 assembly parsing and encoding for STMIA. 
llvm-svn: 139938
 2011-09-16 20:50:13 +00:00
Jim Grosbach d73c6458de Thumb2 assembly parsing and encoding for SMMULL. 
llvm-svn: 139921
 2011-09-16 18:05:48 +00:00
Jim Grosbach 5e6d5cd7da Kill some dead code. 
llvm-svn: 139904
 2011-09-16 16:45:40 +00:00
Jim Grosbach 6c45b75154 Tidy up a bit. 
llvm-svn: 139903
 2011-09-16 16:39:25 +00:00
Jim Grosbach f9799d2c2d Thumb2 assembly parsing and encoding for SMLAL. 
llvm-svn: 139902
 2011-09-16 16:38:00 +00:00
Owen Anderson d7791b961c Fix a crasher in Thumb2 MOV-immediate encoding for certain inputs. 
llvm-svn: 139747
 2011-09-14 22:46:14 +00:00
Jim Grosbach 9c8b9932d6 Thumb2 assembly parsing and encoding for MUL. 
llvm-svn: 139735
 2011-09-14 21:00:40 +00:00
Jim Grosbach 0ecd395095 Thumb2 assembly parsing and encoding for MSR/MRS. 
Fix a bug in handling default flags for both ARM and Thumb encodings.

llvm-svn: 139721
 2011-09-14 20:03:46 +00:00
Jim Grosbach 18b8b17579 Thumb2 assembly parsing for MOV in IT block. 
Select the right 16 vs. 32 bit encoding in an IT block.

llvm-svn: 139714
 2011-09-14 19:12:11 +00:00
Jim Grosbach 3ac26b138b ARM fix assembly parser handling of ranges in register lists. 
Clean up register list handling in general a bit to explicitly check things
like all the registers being from the same register class.

rdar://8883573

llvm-svn: 139707
 2011-09-14 18:08:35 +00:00
Jim Grosbach 75461af000 Remove unnecessary scope resolution operator. 
llvm-svn: 139656
 2011-09-13 22:56:44 +00:00
Jim Grosbach e3a6a82f16 There's only 16 regs legal in a register list. 
llvm-svn: 139637
 2011-09-13 20:35:57 +00:00
Owen Anderson 44ae2da4ec Teach the Thumb ASM parser that BKPT is allowed in IT blocks, even though it is always executed unconditionally. 
llvm-svn: 139610
 2011-09-13 17:59:19 +00:00
Jim Grosbach 3337e396c8 Tidy up a bit. 
llvm-svn: 139559
 2011-09-12 23:36:42 +00:00
Jim Grosbach b908b7af31 Thumb2 parsing and encoding for MOV(immediate). 
Some aliases for MOV(register) also to keep existing T1 tests happy when
run in thumbv7 mode.

llvm-svn: 139440
 2011-09-10 00:15:36 +00:00
Owen Anderson 29cfe6c368 Thumb unconditional branches are allowed in IT blocks, and therefore should have a predicate operand, unlike conditional branches. 
llvm-svn: 139415
 2011-09-09 21:48:23 +00:00
Jim Grosbach 62c33955e2 Thumb2 assembly parsing and encoding for MLA and MLS. 
llvm-svn: 139399
 2011-09-09 20:24:45 +00:00
Jim Grosbach a05627ebaf Thumb2 assembly parsing and encoding for LDREX/LDREXB/LDREXD/LDREXH. 
llvm-svn: 139381
 2011-09-09 18:37:27 +00:00
Jim Grosbach 7db8d697cf Thumb2 assembly parsing and encoding for LDRD(immediate). 
Refactor operand handling for STRD as well. Tests for that forthcoming.

llvm-svn: 139322
 2011-09-08 22:07:06 +00:00
Jim Grosbach c086f689f8 Thumb2 assembly parsing and encoding for LDR pre-indexed w/ writeback. 
Adjust encoding of writeback load/store instructions to better reflect the
way the operand types are represented.

llvm-svn: 139270
 2011-09-08 00:39:19 +00:00
Jim Grosbach 2392c53e73 Thumb2 assembly parsing and encoding for LDRBT. 
llvm-svn: 139267
 2011-09-07 23:39:14 +00:00
Jim Grosbach e0ebc1c396 Thumb2 assembly parsing and encoding for LDR(register). 
llvm-svn: 139264
 2011-09-07 23:10:15 +00:00
Jim Grosbach 5bfa8bab06 Thumb2 parsing and encoding for LDR(immediate). 
The immediate offset of the non-writeback i8 form (encoding T4) allows
negative offsets only. The positive offset form of the encoding is the
LDRT instruction. Immediate offsets in the range [0,255] use encoding T3
instead.

llvm-svn: 139254
 2011-09-07 20:58:57 +00:00
Jim Grosbach a31f223af8 Thumb2 parsing and encoding for LDMIA. 
Choose 32-bit vs. 16-bit encoding when there's no .w suffix in post-processing
as match classes are insufficient to handle the context-sensitiveness of
the writeback operand's legality for the 16-bit encodings.

llvm-svn: 139242
 2011-09-07 18:05:34 +00:00
Jim Grosbach 39c6e1d66d Better diagnostic location information for mnemonic suffices. 
llvm-svn: 139232
 2011-09-07 16:06:04 +00:00
Jim Grosbach 803898f119 Thumb2 parsing and encoding for CLREX. 
llvm-svn: 139172
 2011-09-06 20:27:04 +00:00
Jim Grosbach f471ac3c72 ARM .code directive should always go to the streamer. 
Even if there's no mode switch performed, the .code directive should still
be sent to the output streamer. Otherwise, for example, an output asm stream
is not equivalent to the input stream which generated it (a dependency on
the input target triple arm vs. thumb is introduced which was not originally
there).

llvm-svn: 139155
 2011-09-06 18:46:23 +00:00
Jim Grosbach a0d34d3b5e Thumb2 parsing and encoding of B instruction. 
Tweak handling of IT blocks a bit to enable this. The differentiation between
B and Bcc needs special sauce.

llvm-svn: 139049
 2011-09-02 23:22:08 +00:00
Jim Grosbach f6d5d60f99 ARM 'rscs' mnemonic is carry-setting 'rsc', not 'rs' with a 'cs' condition code. 
llvm-svn: 138952
 2011-09-01 18:22:13 +00:00
Owen Anderson 35d240f9e8 t2Bcc is allowed to have a predicate without a preceding IT instruction. 
llvm-svn: 138946
 2011-09-01 17:47:45 +00:00
Jim Grosbach 1d3c137839 Thumb2 assembly parsing and encoding for ADD(immediate). 
llvm-svn: 138922
 2011-09-01 00:28:52 +00:00
Jim Grosbach 99bc84662f Thumb2 t2Bcc should encode as t2B when condition is 'always'. 
llvm-svn: 138898
 2011-08-31 21:17:31 +00:00
Jim Grosbach cfa9421e16 Remove FIXME. Thumb2 MOV instruction will use separate custom tricks. 
When we want encoding T3 (the wide encoding), we can explicitly check for
that and twiddle the CanAcceptCarrySet accordingly. For now, just correctly
handle encodings T1 and T2 when in Thumb2 mode.

llvm-svn: 138879
 2011-08-31 18:39:39 +00:00
Jim Grosbach c61fc8f301 tBcc is OK to be predicated in Thumb2 outside of IT blocks (obviously). 
llvm-svn: 138873
 2011-08-31 18:29:05 +00:00
Jim Grosbach 6d606fbe14 Tweak Thumb1 ADD encoding selection a bit. 
When the destination register of an add immediate instruction is
explicitly specified, encoding T1 is preferred, else encoding T2 is
preferred.

llvm-svn: 138862
 2011-08-31 17:07:33 +00:00
Jim Grosbach ed16ec4248 Thumb2 parsing and encoding for IT blocks. 
llvm-svn: 138773
 2011-08-29 22:24:09 +00:00
Owen Anderson 967674d26c Improve handling of #-0 offsets for many more pre-indexed addressing modes. 
llvm-svn: 138754
 2011-08-29 19:36:44 +00:00
Owen Anderson f02d98d7c0 Add support for parsing #-0 on non-memory-operand immediate values, and add a testcase that necessitates it. 
llvm-svn: 138739
 2011-08-29 17:17:09 +00:00
Jim Grosbach b9d4e37776 ARM assembly parsing tweak for pldw. 
llvm-svn: 138669
 2011-08-26 22:21:51 +00:00
Jim Grosbach 3d1eac85c3 Thumb2 assembler parsing and encoding of IT instruction. 
This handles only the handling of the IT instruction itself, not the
processing and validation of the instructions in the IT block. That's next,
and will include encoding tests for IT itself.

llvm-svn: 138665
 2011-08-26 21:43:41 +00:00
Owen Anderson 16d33f36d5 invalid-LDR_PRE-arm.txt was already passing, but for the wrong reasons. We were failing to specify enough fixed bits of LDR_PRE/LDRB_PRE, resulting in decoding conflicts. Separate them into immediate vs. register versions, allowing us to specify the necessary fixed bits. This in turn results in the test being decoded properly, and being rejected as UNPREDICTABLE rather than a hard failure. 
llvm-svn: 138653
 2011-08-26 20:43:14 +00:00
Jim Grosbach 1c171b121a Explicitly disallow predication in Thumb1 assembly. 
llvm-svn: 138562
 2011-08-25 17:23:55 +00:00
Jim Grosbach 838ed3af46 Thumb .n mnemonic qualifiers can be ignored for now. 
We'll need to pay attention to them when we start getting more serious about
the details of parsing thumb2 assembly.

llvm-svn: 138500
 2011-08-24 22:19:48 +00:00
Jim Grosbach 4b701af908 Thumb parsing and encoding for SUB (SP minu immediate). 
Fix FiXME in test file. Remove FIXME for SUB (SP minus register) since that
form is Thumb2 only.

llvm-svn: 138494
 2011-08-24 21:42:27 +00:00
Jim Grosbach 0a0b3071df Thumb parsing and encoding support for ADD SP instructions. 
Fix the test FIXME and add parsing support for the ADD (SP plus immediate)
and ADD (SP plus register) instruction forms.

llvm-svn: 138488
 2011-08-24 21:22:15 +00:00
Jim Grosbach 6ccd79f4d5 Add missing explicit writeback operand to tSTMIA_UPD. 
rdar://10014745

llvm-svn: 138457
 2011-08-24 18:19:42 +00:00
Evan Cheng 2bb4035707 Move TargetRegistry and TargetSelect from Target to Support where they belong. 
These are strictly utilities for registering targets and components.

llvm-svn: 138450
 2011-08-24 18:08:43 +00:00
Evan Cheng 4d6c9d711d Some refactoring so TargetRegistry.h no longer has to include any files 
from MC.

llvm-svn: 138367
 2011-08-23 20:15:21 +00:00
Jim Grosbach d80d169a04 Thumb parsing and encoding for STM. 
llvm-svn: 138345
 2011-08-23 18:15:37 +00:00
Jim Grosbach 169b2be611 Factor low reg checking into a helper function. 
llvm-svn: 138344
 2011-08-23 18:13:04 +00:00
Jim Grosbach 3636be3c8f Thumb parsing and encoding for SBC. 
llvm-svn: 138311
 2011-08-22 23:55:58 +00:00
Jim Grosbach c3c32d9e09 Thumb parsing and encoding for RSB. 
llvm-svn: 138308
 2011-08-22 23:47:13 +00:00
Jim Grosbach 38c59fcb08 Improve error checking for tPUSH and tPOP register lists. 
llvm-svn: 138295
 2011-08-22 23:17:34 +00:00
Jim Grosbach 139acd21e6 Thumb assemmbly parsing diagnostic improvements for LDM. 
llvm-svn: 138287
 2011-08-22 23:01:07 +00:00
Jim Grosbach 5c932b24be Tighten up ARM reglist validation a bit. 
llvm-svn: 138258
 2011-08-22 18:50:36 +00:00
Jim Grosbach 2597722e07 Thumb parsing and encoding support for NOP. 
The irony is not lost that this is not a completely trivial patchset.

llvm-svn: 138143
 2011-08-19 23:24:36 +00:00
Jim Grosbach 37aa348195 Thumb assembly parsing and encoding for NEG. 
llvm-svn: 138131
 2011-08-19 22:51:03 +00:00
Jim Grosbach 459422d750 Be more lenient on tied operand matching for MUL. 
llvm-svn: 138124
 2011-08-19 22:30:46 +00:00
Jim Grosbach 8e048495c8 Thumb assembly parsing and encoding for MUL. 
llvm-svn: 138108
 2011-08-19 22:07:46 +00:00
Jim Grosbach f86cd37bef Thumb assembly parsing and encoding for MOV. 
llvm-svn: 138076
 2011-08-19 20:46:54 +00:00
Jim Grosbach 5503c3a4e8 Thumb assembly parsing and encoding for LSL(immediate). 
llvm-svn: 138063
 2011-08-19 19:29:25 +00:00
Jim Grosbach 26d3587bd8 Thumb assembly parsing and encoding for LDRH. 
llvm-svn: 138060
 2011-08-19 18:55:51 +00:00
Jim Grosbach a32c753ebf Thumb assembly parsing and encoding for LDRB. 
llvm-svn: 138059
 2011-08-19 18:49:59 +00:00
Jim Grosbach 23983d6bd9 Thumb assembly parsing and encoding for LDR(immediate) form T2. 
llvm-svn: 138050
 2011-08-19 18:13:48 +00:00
Jim Grosbach 7473329725 Use helper function to check for low registers. 
llvm-svn: 138048
 2011-08-19 17:57:22 +00:00
Jim Grosbach 3fe94e3ef8 Thumb assembly parsing and encoding for LDR(immediate) form T1. 
llvm-svn: 138047
 2011-08-19 17:55:24 +00:00
Jim Grosbach 90103ccc05 Thumb assembly parsing and encoding for LDM instruction. 
Fix base register type and canonicallize to the "ldm" spelling rather than
"ldmia." Add diagnostics for incorrect writeback token and out-of-range
registers.

llvm-svn: 137986
 2011-08-18 21:50:53 +00:00
Jim Grosbach 6ddb568ab8 Add missing 'break'. 
llvm-svn: 137941
 2011-08-18 16:08:39 +00:00
Jim Grosbach cbd4ab104b Thumb assembly parsing and encoding for B. 
llvm-svn: 137891
 2011-08-17 22:57:40 +00:00
Jim Grosbach d3e8e29124 Thumb assembly parsing and encoding for ASR. 
llvm-svn: 137889
 2011-08-17 22:49:09 +00:00
Jim Grosbach 46dd413991 ARM clean up the imm_sr operand class representation. 
Represent the operand value as it will be encoded in the instruction. This
allows removing the specialized encoder and decoder methods entirely. Add
an assembler match class while we're at it to lay groundwork for parsing the
thumb shift instructions.

llvm-svn: 137879
 2011-08-17 21:51:27 +00:00
Jim Grosbach e9ab47a72a Thumb ADD(immediate) parsing support. 
llvm-svn: 137788
 2011-08-16 23:57:34 +00:00
Jim Grosbach b7fa2c0a53 Thumb parsing diagnostics for low-reg requirements on ADD and MOV. 
llvm-svn: 137779
 2011-08-16 22:20:01 +00:00
Jim Grosbach 64610e52e7 Add missing exit for 'case'. 
llvm-svn: 137774
 2011-08-16 21:42:31 +00:00
Jim Grosbach 58ffdccab1 Thumb assembly parsing and encoding for ADD(register) instruction. 
llvm-svn: 137759
 2011-08-16 21:34:08 +00:00
Jim Grosbach 7283da9bb2 Move some logic into a helper function and expand the commentary. 
llvm-svn: 137756
 2011-08-16 21:12:37 +00:00
Jim Grosbach 3e941aee69 ARM thumb assembly parsing for arithmetic flag setting instructions. 
Thumb one requires that many arithmetic instruction forms have an 'S'
suffix. For Thumb2, the whether the suffix is required or precluded depends
on whether the instruction is in an IT block. Use target parser predicates
to check for these sorts of context-sensitive constraints.

llvm-svn: 137746
 2011-08-16 20:45:50 +00:00
Jim Grosbach 120a96a721 MCTargetAsmParser target match predicate support. 
Allow a target assembly parser to do context sensitive constraint checking
on a potential instruction match. This will be used, for example, to handle
Thumb2 IT block parsing.

llvm-svn: 137675
 2011-08-15 23:03:29 +00:00
Jim Grosbach 8cffa28af8 ARM vector compare to zero instruction assembly parsing support. 
llvm-svn: 137389
 2011-08-11 23:51:13 +00:00
Jim Grosbach a2b8b60646 ARM load shifted register pre-index fix shift value asm parser encoding. 
llvm-svn: 137367
 2011-08-11 22:05:09 +00:00
Jim Grosbach d886f8cd8d ARM STRH assembly parsing and encoding. 
llvm-svn: 137353
 2011-08-11 21:17:22 +00:00
Jim Grosbach eb09f49a7f ARM STRD assembly parsing and encoding. 
llvm-svn: 137342
 2011-08-11 20:28:23 +00:00
Jim Grosbach d564bf3181 ARM STR(immediate) assembly parsing and encoding. 
llvm-svn: 137331
 2011-08-11 19:22:40 +00:00
Jim Grosbach 27ad83d8a9 ARM push of a single register encodes as pre-indexed STR. 
Per the ARM ARM, a 'push' of a single register encodes as an STR,
not an STM.

llvm-svn: 137318
 2011-08-11 18:07:11 +00:00
Jim Grosbach 8ba76c6d5c ARM pop of a single register encodes as post-indexed LDR. 
Per the ARM ARM, a 'pop' of a single register encodes as an LDR,
not an LDM.

llvm-svn: 137316
 2011-08-11 17:35:48 +00:00
Jim Grosbach cd4dd255c0 ARM LDRH(immediate) assembly parsing and encoding support. 
llvm-svn: 137260
 2011-08-10 22:42:16 +00:00
Jim Grosbach 1d9d5e93d1 ARM LDRD(register) assembly parsing and encoding. 
Add support for literal encoding of #-0 along the way.

llvm-svn: 137254
 2011-08-10 21:56:18 +00:00
Jim Grosbach f7164b2cfd Fix typo. Not quite sure how that slipped in there. 
llvm-svn: 137245
 2011-08-10 20:49:18 +00:00
Jim Grosbach 5b96b80644 ARM LDRD(immediate) assembly parsing and encoding support. 
llvm-svn: 137244
 2011-08-10 20:29:19 +00:00
Jim Grosbach 95466ce63b ARM load/store label parsing. 
Allow labels for load/store instructions when parsing. There's encoding
issues, still, so this doesn't work all the way through, yet.

llvm-svn: 137064
 2011-08-08 20:59:31 +00:00
Jim Grosbach 3d0b3a3a50 ARM load instruction shifted register index operands. 
Parsing and encoding for shifted index operands for load instructions.

llvm-svn: 136986
 2011-08-05 22:03:36 +00:00
Jim Grosbach c320c85261 ARM indexed load assembly parsing and encoding. 
More parsing support for indexed loads. Fix pre-indexed with writeback
parsing for register offsets and handle basic post-indexed offsets.

llvm-svn: 136982
 2011-08-05 21:28:30 +00:00
Jim Grosbach a70fbfd577 ARM simplify the postidx_reg operand encoding. 
The immediate portion of the operand is just a boolean (the 'U' bit indicating
add vs. subtract). Treat it as such.

llvm-svn: 136969
 2011-08-05 16:11:38 +00:00
Jim Grosbach cd17c12078 ARM assembly parsing and encoding for LDR instructions. 
Enhance support for LDR instruction assembly parsing for post-indexed
addressing with immediate values. Add tests.

llvm-svn: 136940
 2011-08-04 23:01:30 +00:00
Jim Grosbach d359571120 ARM refactoring assembly parsing of memory address operands. 
Memory operand parsing is a bit haphazzard at the moment, in no small part
due to the even more haphazzard representations of memory operands in the .td
files. Start cleaning that all up, at least a bit.

The addressing modes in the .td files will be being simplified to not be
so monolithic, especially with regards to immediate vs. register offsets
and post-indexed addressing. addrmode3 is on its way with this patch, for
example.

This patch is foundational to enable going back to smaller incremental patches
for the individual memory referencing instructions themselves. It does just
enough to get the basics in place and handle the "make check" regression tests
we already have.

Follow-up work will be fleshing out the details and adding more robust test
cases for the individual instructions, starting with ARM mode and moving from
there into Thumb and Thumb2.

llvm-svn: 136845
 2011-08-03 23:50:40 +00:00
Jim Grosbach 51726e2147 ARM SRS instruction parsing, diassembly and encoding support. 
Fix the instruction encoding for operands. Refactor mode to use explicit
instruction definitions per FIXME to be more consistent with loads/stores.
Fix disassembler accordingly. Add tests.

llvm-svn: 136509
 2011-07-29 20:26:09 +00:00
Jim Grosbach c4dc52cd52 ARM assembly parsing and encoding for RFE instruction. 
Fill in the missing fixed bits and the register operand bits of the instruction
encoding. Refactor the definition to make the mode explicit, which is
consistent with how loads and stores are normally represented and makes
parsing much easier. Add parsing aliases for pseudo-instruction variants.
Update the disassembler for the new representations. Add tests for parsing and
encoding.

llvm-svn: 136479
 2011-07-29 18:47:24 +00:00
Jim Grosbach dd475c39d7 PLD and PLI are not predicable in ARM mode. 
llvm-svn: 136427
 2011-07-28 23:22:41 +00:00
Jim Grosbach a03ab0e3dc ARM assembly parsing and encoding for BLX (immediate). 
Add parsing support for BLX (immediate). Since the register operand version is
predicated and the label operand version is not, we have to use some special
handling to get the operand list right for matching.

llvm-svn: 136406
 2011-07-28 21:57:55 +00:00
Jim Grosbach 864b609491 ARM assembly parsing and encoding for BFC and BFI. 
Add parsing support that handles converting the lsb+width source into the
odd way we represent the instruction (an inverted bitfield mask).

llvm-svn: 136399
 2011-07-28 21:34:26 +00:00
Owen Anderson b0e6899398 Revert r136295. It broke nightly testers because some parts of codegen weren't aware of the changes to operand ordering. I hope to revive this sometime in the future, but it's not strictly necessary for now. 
llvm-svn: 136362
 2011-07-28 17:18:57 +00:00
Owen Anderson b81af2abe0 Refactor and improve the encodings/decodings for addrmode3 loads, and make the writeback operand always the first. 
llvm-svn: 136295
 2011-07-27 23:36:57 +00:00
Evan Cheng eda1d4f3ba Emit an error is asm parser parsed X86_64 only registers, e.g. %rax, %sil. 
This can happen in cases where TableGen generated asm matcher cannot check
whether a register operand is in the right register class. e.g. mem operands.

rdar://8204588

llvm-svn: 136292
 2011-07-27 23:22:03 +00:00
Jim Grosbach 39b062bfaa ARM assembly parsing and encoding for UMULL. 
Fix parsing of the 's' suffix for the mnemonic. Add tests.

llvm-svn: 136277
 2011-07-27 22:01:42 +00:00
Jim Grosbach 0c398b9c7e ARM assembly parsing and encoding for UMLAL. 
Fix parsing of the 's' suffix for the mnemonic. Add tests.

llvm-svn: 136274
 2011-07-27 21:58:11 +00:00
Jim Grosbach 03f56d9de6 ARM parsing and encoding of SBFX and UBFX. 
Encode the width operand as it encodes in the instruction, which simplifies
the disassembler and the encoder, by using the imm1_32 operand def. Add a
diagnostic for the context-sensitive constraint that the width must be in
the range [1,32-lsb].

llvm-svn: 136264
 2011-07-27 21:09:25 +00:00
Jim Grosbach 833b9d3353 ARM assembly parsing and encoding for extend instructions. 
Assembly parser handling for extend instruction rotate operands. Add tests
for the sign extend instructions.

llvm-svn: 136252
 2011-07-27 20:15:40 +00:00
Evan Cheng 481ebb0133 Support .code32 and .code64 in X86 assembler. 
llvm-svn: 136197
 2011-07-27 00:38:12 +00:00
Jim Grosbach 0d6022da6b Fix over-zealous rename from r136095. 
llvm-svn: 136132
 2011-07-26 20:41:24 +00:00
Jim Grosbach edaa35ae6f ARM diagnostics for ldrexd/stredx out of order paired register operands. 
llvm-svn: 136110
 2011-07-26 18:25:39 +00:00
Jim Grosbach eab1c0d09c Clean up the ARM asm parser a bit. 
No intendeded functional change. Just cleaning up a bit to make things more
self-consistent in layout and style.

llvm-svn: 136095
 2011-07-26 17:10:22 +00:00
Jim Grosbach f16378479b ARM parsing and encoding for SVC instruction. 
llvm-svn: 136090
 2011-07-26 16:24:27 +00:00
Evan Cheng 1142444565 Rename TargetAsmParser to MCTargetAsmParser and TargetAsmLexer to MCTargetAsmLexer; rename createAsmLexer to createMCAsmLexer and createAsmParser to createMCAsmParser. 
llvm-svn: 136027
 2011-07-26 00:24:13 +00:00
Jim Grosbach 475c6dbef6 ARM assembly parsing and encoding for SSAT16 instruction. 
llvm-svn: 136006
 2011-07-25 23:09:14 +00:00
Jim Grosbach 3a9cbeed73 ARM assembly parsing and encoding for SSAT instruction. 
Fix the Rn register encoding for both SSAT and USAT. Update the parsing of the
shift operand to correctly handle the allowed shift types and immediate ranges
and issue meaningful diagnostics when an illegal value or shift type is
specified. Add aliases to parse an ommitted shift operand (default value of
'lsl #0').

Add tests for diagnostics and proper encoding.

llvm-svn: 135990
 2011-07-25 22:20:28 +00:00
Evan Cheng 9eec764c15 Fix more MC layering violations. 
llvm-svn: 135979
 2011-07-25 21:32:49 +00:00