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201 Commits

Author SHA1 Message Date
Craig Topper aab53e7785 Mark some more instructions as CodeGenOnly. Remove filters from the disassembler. 
llvm-svn: 192522
 2013-10-12 04:46:18 +00:00
Craig Topper 81034928c6 Remove another unnecessary filter from the disassembler. 
llvm-svn: 192425
 2013-10-11 06:59:57 +00:00
Craig Topper e1ceeb40c1 Fix so CRC32r64r8 isn't accidentally filtered from the disassembler tables. 
llvm-svn: 192339
 2013-10-10 04:26:52 +00:00
Craig Topper 2d0d180ab4 More x86 disassembler filtering cleanup. 
llvm-svn: 192279
 2013-10-09 06:12:53 +00:00
Craig Topper 043d749ba3 Remove some old filters from the x86 disassembler table builder. 
llvm-svn: 192275
 2013-10-09 05:02:29 +00:00
Craig Topper a984729f8a Remove unneeded MMX instruction definition by moving pattern to an equivalent instruction definition and removing the filtering from the disassembler table building. 
llvm-svn: 192175
 2013-10-08 06:30:39 +00:00
Craig Topper 72c8cd7bc3 Remove some instructions that existed to provide aliases to the assembler. Can be done with InstAlias instead. Unfortunately, this was causing printer to use 'vmovq' or 'vmovd' based on what was parsed. To cleanup the inconsistencies convert all 'vmovd' with 64-bit registers to 'vmovq', but provide an alias so that 'vmovd' will still parse. 
llvm-svn: 192171
 2013-10-08 05:53:50 +00:00
Craig Topper 07ad1b23bb Remove some instructions that seem to only exist to trick the filtering checks in the disassembler table creation. Just fix up the filter to let the real instruction through instead. 
llvm-svn: 192090
 2013-10-07 07:19:47 +00:00
Craig Topper 2658d89728 Add disassembler support for long encodings for INC/DEC in 32-bit mode. 
llvm-svn: 192086
 2013-10-07 04:28:06 +00:00
Craig Topper 9e3e38ae3f Add XOP disassembler support. Fixes PR13933. 
llvm-svn: 191874
 2013-10-03 05:17:48 +00:00
Elena Demikhovsky c35219e3ee AVX-512: Added masked SHIFT commands, more encoding tests 
llvm-svn: 189005
 2013-08-22 12:18:28 +00:00
Craig Topper 9469e906a5 Remove use of sprintf added to X86 disassembler tablegen code. Send message with instruction name to errs() instead and use a generic message for the llvm_unreachable. Consistent with other places in this file. 
llvm-svn: 187333
 2013-07-28 21:28:02 +00:00
Elena Demikhovsky baf51e3e61 fixed compilation issue 
llvm-svn: 187325
 2013-07-28 08:45:12 +00:00
Elena Demikhovsky 003e7d73b9 Added encoding prefixes for KNL instructions (EVEX). 
Added 512-bit operands printing.
Added instruction formats for KNL instructions.

llvm-svn: 187324
 2013-07-28 08:28:38 +00:00
Stefanus Du Toit 8811ad4f81 Add support for encoding the HLE XACQUIRE and XRELEASE prefixes. 
For decoding, keep the current behavior of always decoding these as their REP
versions. In the future, this could be improved to recognize the cases where
these behave as XACQUIRE and XRELEASE and decode them as such.

llvm-svn: 184207
 2013-06-18 17:08:10 +00:00
Michael Liao 95d9440348 Add CLAC/STAC instruction encoding/decoding support 
As these two instructions in AVX extension are privileged instructions for
special purpose, it's only expected to be used in inlined assembly.

llvm-svn: 179266
 2013-04-11 04:52:28 +00:00
Dave Zarzycki 656e8515fc x86 -- add the XTEST instruction 
llvm-svn: 177888
 2013-03-25 18:59:43 +00:00
Kevin Enderby f15856ebb4 Fixes disassembler crashes on 2013 Haswell RTM instructions. 
rdar://13318048

llvm-svn: 176828
 2013-03-11 21:17:13 +00:00
Kay Tiong Khoo ab588efe42 Added 0x0D to 2-byte opcode extension table for prefetch* variants 
Fixed decode of existing 3dNow prefetchw instruction
Intel is scheduled to add a compatible prefetchw (same encoding) to future CPUs

llvm-svn: 174920
 2013-02-12 00:19:12 +00:00
Chandler Carruth 91d19d8e93 Sort the #include lines for utils/... 
I've tried to find main moudle headers where possible, but the TableGen
stuff may warrant someone else looking at it.

llvm-svn: 169251
 2012-12-04 10:37:14 +00:00
Michael Liao 73cffddb95 Add support of RTM from TSX extension 
- Add RTM code generation support throught 3 X86 intrinsics:
  xbegin()/xend() to start/end a transaction region, and xabort() to abort a
  tranaction region

llvm-svn: 167573
 2012-11-08 07:28:54 +00:00
Craig Topper 3f23c1a8b9 Remove code for setting the VEX L-bit as a function of operand size from the code emitters and the disassembler table builder. Fix a couple instructions that were still missing VEX_L. 
llvm-svn: 164204
 2012-09-19 06:37:45 +00:00
Craig Topper c30fdbc46c Add support for converting llvm.fma to fma4 instructions. 
llvm-svn: 162999
 2012-08-31 15:40:30 +00:00
Craig Topper c6b7ef61f4 Mark MOVZX32_NOREX as isCodeGenOnly and neverHasSideEffects. The isCodeGenOnly change allows special detection of _NOREX instructions to be removed from tablegen disassembler code. 
llvm-svn: 160951
 2012-07-30 06:48:11 +00:00
Craig Topper 08ead0b14e Remove some unnecessary filter checks. They were already covered by IsCodeGenOnly 
llvm-svn: 160950
 2012-07-30 06:27:19 +00:00
Craig Topper 6f4ad80dc8 Remove check for sub class of X86Inst from filter function since caller guaranteed it. Replace another sub class check with ShouldBeEmitted flag since it was factored in there already. 
llvm-svn: 160949
 2012-07-30 05:39:34 +00:00
Craig Topper b58dc17025 Simplify code that filtered certain instructions in two different ways. No functional change. 
llvm-svn: 160948
 2012-07-30 05:10:05 +00:00
Craig Topper 60a58ac3e2 Remove check for f256mem from has256BitOperands as nothing depended on it and it isn't the only 256-bit memory type anyway. 
llvm-svn: 160946
 2012-07-30 04:53:00 +00:00
Craig Topper ac172e225d Remove trailing whitespace. 
llvm-svn: 160945
 2012-07-30 04:48:12 +00:00
Craig Topper c7690ac7ac Make l/q suffixes on AVX forms of scalar convert instructions consistent with their non-AVX forms. 
llvm-svn: 160775
 2012-07-26 07:48:28 +00:00
Richard Trieu 9208abd7c3 Move around some enum elements so that lastMRM corrects gets assigned 56, which 
is one more that MRM_DF which is 55.  Previously, it held value 45, the same
as MRM_D0.

llvm-svn: 160465
 2012-07-18 23:04:22 +00:00
Craig Topper 01deb5f2df Make x86 asm parser to check for xmm vs ymm for index register in gather instructions. Also fix Intel syntax for gather instructions to use 'DWORD PTR' or 'QWORD PTR' to match gas. 
llvm-svn: 160420
 2012-07-18 04:11:12 +00:00
Craig Topper f7755df776 Update GATHER instructions to support 2 read-write operands. Patch from myself and Manman Ren. 
llvm-svn: 160110
 2012-07-12 06:52:41 +00:00
Manman Ren a09820414a X86: add GATHER intrinsics (AVX2) in LLVM 
Support the following intrinsics:
llvm.x86.avx2.gather.d.pd, llvm.x86.avx2.gather.q.pd
llvm.x86.avx2.gather.d.pd.256, llvm.x86.avx2.gather.q.pd.256
llvm.x86.avx2.gather.d.ps, llvm.x86.avx2.gather.q.ps
llvm.x86.avx2.gather.d.ps.256, llvm.x86.avx2.gather.q.ps.256

Modified Disassembler to handle VSIB addressing mode.

llvm-svn: 159221
 2012-06-26 19:47:59 +00:00
Benjamin Kramer ef479ea854 Add intrinsics, code gen, assembler and disassembler support for the SSE4a extrq and insertq instructions. 
This required light surgery on the assembler and disassembler
because the instructions use an uncommon encoding. They are
the only two instructions in x86 that use register operands
and two immediates.

llvm-svn: 157634
 2012-05-29 19:05:25 +00:00
Craig Topper 7629d63bc4 Add support for AVX enhanced comparison predicates. Patch from Kay Tiong Khoo. 
llvm-svn: 153935
 2012-04-03 05:20:24 +00:00
Kevin Enderby 014e1cde5f Fix the x86 disassembler to at least print the lock prefix if it is the first 
prefix.  Added a FIXME to remind us this still does not work when it is not the
first prefix.

llvm-svn: 152414
 2012-03-09 17:52:49 +00:00
Craig Topper 6491c8020e X86 disassembler support for jcxz, jecxz, and jrcxz. Fixes PR11643. Patch by Kay Tiong Khoo. 
llvm-svn: 151510
 2012-02-27 01:54:29 +00:00
Craig Topper 66a3597a4a Add vmfunc instruction to X86 assembler and disassembler. 
llvm-svn: 150899
 2012-02-19 01:39:49 +00:00
Craig Topper ed7aa46366 Add X86 assembler and disassembler support for AMD SVM instructions. Original patch by Kay Tiong Khoo. Few tweaks by me for code density and to reduce replication. 
llvm-svn: 150873
 2012-02-18 08:19:49 +00:00
Craig Topper 2ba766ae84 Add disassembler support for VPERMIL2PD and VPERMIL2PS. 
llvm-svn: 147368
 2011-12-30 06:23:39 +00:00
Craig Topper 03a0beda88 Add FMA4 instructions to disassembler. 
llvm-svn: 147367
 2011-12-30 05:20:36 +00:00
Craig Topper 75ffc5fbb5 Remove some unnecessary filtering checks from X86 disassembler table build. 
llvm-svn: 144986
 2011-11-19 05:48:20 +00:00
Craig Topper f01f1b5cb9 More AVX2 instructions and their intrinsics. 
llvm-svn: 143895
 2011-11-06 23:04:08 +00:00
Craig Topper 980d59832a Add X86 RORX instruction 
llvm-svn: 142741
 2011-10-23 07:34:00 +00:00
Craig Topper 96fa597828 Add X86 PEXTR and PDEP instructions. 
llvm-svn: 142141
 2011-10-16 16:50:08 +00:00
Craig Topper aea148c366 Add X86 BZHI instruction as well as BMI2 feature detection. 
llvm-svn: 142122
 2011-10-16 07:55:05 +00:00
Craig Topper 0ae8d4d738 Add X86 INVPCID instruction. Add 32/64-bit predicates to INVEPT, INVVPID, VMREAD, and VMWRITE to remove hack from X86RecognizableInstr. 
llvm-svn: 142117
 2011-10-16 07:05:40 +00:00
Craig Topper 25ea4e5ad3 Add X86 BEXTR instruction. This instruction uses VEX.vvvv to encode Operand 3 instead of Operand 2 so needs special casing in the disassembler and code emitter. Ultimately, should pass this information from tablegen 
llvm-svn: 142105
 2011-10-16 03:51:13 +00:00
Craig Topper 27ad12539d Add support for X86 blsr, blsmsk, and blsi instructions. Required extra work because these are the first VEX encoded instructions to use the reg field as an opcode extension. 
llvm-svn: 142082
 2011-10-15 20:46:47 +00:00
Craig Topper 965de2c197 Add X86 ANDN instruction. Including instruction selection. 
llvm-svn: 141947
 2011-10-14 07:06:56 +00:00
Craig Topper a697852386 Fix disassembling of popcntw. Also remove some code that says it accounts for 64BIT_REXW_XD not existing, but it does exist. 
llvm-svn: 141642
 2011-10-11 04:34:23 +00:00
Craig Topper 23eb468b1f Fix assembling of xchg %eax, %eax to not use the NOP encoding of 0x90. This was done by creating a new register group that excludes AX registers. Fixes PR10345. Also added aliases for flipping the order of the operands of xchg <reg>, %eax. 
llvm-svn: 141274
 2011-10-06 06:44:41 +00:00
Craig Topper f18c896337 Add support in the disassembler for ignoring the L-bit on certain VEX instructions. Mark instructions that have this behavior. Fixes PR10676. 
llvm-svn: 141065
 2011-10-04 06:30:42 +00:00
Craig Topper d07a59f288 Fix disassembling of INVEPT and INVVPID to take operands 
llvm-svn: 140955
 2011-10-01 21:20:14 +00:00
Craig Topper 88cb33e0d4 Fix disassembler handling of CRC32 which is an odd instruction that uses 0xf2 as an opcode extension and allows the opsize prefix. This necessitated adding IC_XD_OPSIZE and IC_64BIT_XD_OPSIZE contexts. Unfortunately, this increases the size of the disassembler tables. Fixes PR10702. 
llvm-svn: 140954
 2011-10-01 19:54:56 +00:00
Craig Topper 526adabe87 Don't allow 32-bit only instructions to be disassembled in 64-bit mode. Fixes part of PR10700. 
llvm-svn: 140370
 2011-09-23 06:57:25 +00:00
Craig Topper ee8157cb41 Fix mem type for VEX.128 form of VROUNDP*. Remove filter preventing VROUND from being recognized by disassembler. 
llvm-svn: 139691
 2011-09-14 06:41:26 +00:00
Craig Topper e98d8a5c84 Remove filter that was preventing MOVDQU/MOVDQA and their VEX forms from being disassembled. Also added encodings for the other register/register form of these instructions. Fixes PR10848. 
llvm-svn: 139588
 2011-09-13 06:54:58 +00:00
Craig Topper a88e356017 Fix disassembling of reverse register/register forms of ADD/SUB/XOR/OR/AND/SBB/ADC/CMP/MOV. 
llvm-svn: 139485
 2011-09-11 21:41:45 +00:00
Craig Topper a948cb9058 Fix disassembling of PAUSE instruction. Fixes PR10900. Also fixed NOP disassembling to ignore OpSize and REX.W. 
llvm-svn: 139484
 2011-09-11 20:23:20 +00:00
Kevin Enderby 54e09b4799 Fix the disassembly of the X86 "crc32w %ax, %eax" instruction. Bug 10702. 
llvm-svn: 139014
 2011-09-02 18:03:03 +00:00
Craig Topper 4f2fba1108 Add vvvv support to disassembling of instructions with MRMDestMem and MRMDestReg form. Needed to support mem dest form of vmaskmovps/d. Fixes PR10807. 
llvm-svn: 138795
 2011-08-30 07:09:35 +00:00
Kevin Enderby 7e2489a7c9 Fix the disassembly of the X86 crc32 instruction. Bug 10702 and rdar://8795217 
llvm-svn: 138771
 2011-08-29 22:06:28 +00:00
David Greene af8ee2cdee Unconstify Inits 
Remove const qualifiers from Init references, per Chris' request.

llvm-svn: 136531
 2011-07-29 22:43:06 +00:00
David Greene 1aa0e3e118 [AVX] Constify Inits 
Make references to Inits const everywhere.  This is the final step
before making them unique.

llvm-svn: 136485
 2011-07-29 19:07:05 +00:00
Kevin Enderby 5ef6c453a6 Fix llvm-mc handing of x86 instructions that take 8-bit unsigned immediates. 
llvm-mc gives an "invalid operand" error for instructions that take an unsigned
immediate which have the high bit set such as:
    pblendw $0xc5, %xmm2, %xmm1
llvm-mc treats all x86 immediates as signed values and range checks them.
A small number of x86 instructions use the imm8 field as a set of bits.
This change only changes those instructions and where the high bit is not
ignored.  The others remain unchanged.

llvm-svn: 136287
 2011-07-27 23:01:50 +00:00
Eli Friedman 0318036c4d Make the disassembler able to disassemble a bunch of instructions with names in the TableGen files containing "64" on x86-32. This includes a bunch of x87 instructions, like fld, and a bunch of SSSE3 instructions on MMX registers like pshufb. Part of PR8873. 
llvm-svn: 135337
 2011-07-16 02:41:28 +00:00
Eric Christopher 71520a867d Revert r134921, 134917, 134908 and 134907. They're causing failures 
in multiple buildbots.

llvm-svn: 134936
 2011-07-11 23:06:52 +00:00
David Greene af973b4f36 [AVX] Make Inits Foldable 
Manage Inits in a FoldingSet.  This provides several benefits:

- Memory for Inits is properly managed

- Duplicate Inits are folded into Flyweights, saving memory

- It enforces const-correctness, protecting against certain classes
  of bugs

The above benefits allow Inits to be used in more contexts, which in
turn provides more dynamism to TableGen.  This enhanced capability
will be used by the AVX code generator to a fold common patterns
together.

llvm-svn: 134907
 2011-07-11 18:25:51 +00:00
Joerg Sonnenberger fc4789da4a Add support for the VIA PadLock instructions. 
llvm-svn: 128826
 2011-04-04 16:58:13 +00:00
Sean Callanan c3fd523731 X86 table-generator and disassembler support for the AVX 
instruction set.  This code adds support for the VEX prefix
and for the YMM registers accessible on AVX-enabled
architectures.  Instruction table support that enables AVX
instructions for the disassembler is in an upcoming patch.

llvm-svn: 127644
 2011-03-15 01:23:15 +00:00
Rafael Espindola e39062199e Implement xgetbv and xsetbv. 
Patch by Jai Menon.

llvm-svn: 126165
 2011-02-22 00:35:18 +00:00
Owen Anderson 578074b2f3 In Thumb2, direct branches can be encoded as either a "short" conditional branch with a null predicate, or 
as a "long" direct branch.  While the mnemonics are the same, they encode the branch offset differently, and
the Darwin assembler appears to prefer the "long" form for direct branches.  Thus, in the name of bitwise
equivalence, provide encoding and fixup support for it.

llvm-svn: 121710
 2010-12-13 19:31:11 +00:00
Chris Lattner d8adec70f3 factor the operand list (and related fields/operations) out of 
CodeGenInstruction into its own helper class.  No functionality change.

llvm-svn: 117893
 2010-11-01 04:03:32 +00:00
Kevin Enderby 5e7cb5fc27 Added the x86 instruction ud2b (2nd official undefined instruction). 
llvm-svn: 117485
 2010-10-27 20:46:49 +00:00
Sean Callanan 8d302b2e71 Fixed the disassembler to handle two new X86 
instruction forms.  Now the ENTER instruction
disassembles correctly.

llvm-svn: 115573
 2010-10-04 22:45:51 +00:00
Dale Johannesen dd224d2333 Massive rewrite of MMX: 
The x86_mmx type is used for MMX intrinsics, parameters and
return values where these use MMX registers, and is also
supported in load, store, and bitcast.

Only the above operations generate MMX instructions, and optimizations
do not operate on or produce MMX intrinsics. 

MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into
smaller pieces.  Optimizations may occur on these forms and the
result casted back to x86_mmx, provided the result feeds into a
previous existing x86_mmx operation.

The point of all this is prevent optimizations from introducing
MMX operations, which is unsafe due to the EMMS problem.

llvm-svn: 115243
 2010-09-30 23:57:10 +00:00
Chris Lattner f60062fd55 add basic avx support to the disassembler, also teach it about ssmem/sdmem 
operands.

With this done, we can remove the _Int suffixes from the round instructions
without the disassembler blowing up.  This allows the assembler to support
them, implementing rdar://8456376 - llvm-mc rejects 'roundss'

llvm-svn: 115019
 2010-09-29 02:57:56 +00:00
Dale Johannesen 605acfe533 Add patterns for MMX that use the new intrinsics. 
Enable palignr intrinsic.
These may need adjustment for a new VT in due course.

llvm-svn: 113233
 2010-09-07 18:10:56 +00:00
Duncan Sands 41b4a6b36a Convert some tab stops into spaces. 
llvm-svn: 108130
 2010-07-12 08:16:59 +00:00
Chris Lattner ac5881295c Implement the major chunk of PR7195: support for 'callw' 
in the integrated assembler.  Still some discussion to be
done.

llvm-svn: 107825
 2010-07-07 22:27:31 +00:00
Bruno Cardoso Lopes fd5458d4bd More AVX instructions ({ADD,SUB,MUL,DIV}{SS,SD}rm) 
Introduce the VEX_X field

llvm-svn: 105859
 2010-06-11 23:50:47 +00:00
Bruno Cardoso Lopes c2f87b7bb2 Reapply r105521, this time appending "LLU" to 64 bit 
immediates to avoid breaking the build.

llvm-svn: 105652
 2010-06-08 22:51:23 +00:00
Chris Lattner fdd2614330 revert r105521, which is breaking the buildbots with stuff like this: 
In file included from X86InstrInfo.cpp:16:
X86GenInstrInfo.inc:2789: error: integer constant is too large for 'long' type
X86GenInstrInfo.inc:2790: error: integer constant is too large for 'long' type
X86GenInstrInfo.inc:2792: error: integer constant is too large for 'long' type
X86GenInstrInfo.inc:2793: error: integer constant is too large for 'long' type
X86GenInstrInfo.inc:2808: error: integer constant is too large for 'long' type
X86GenInstrInfo.inc:2809: error: integer constant is too large for 'long' type
X86GenInstrInfo.inc:2816: error: integer constant is too large for 'long' type
X86GenInstrInfo.inc:2817: error: integer constant is too large for 'long' type

llvm-svn: 105524
 2010-06-05 04:17:30 +00:00
Bruno Cardoso Lopes 594fa26317 Initial AVX support for some instructions. No patterns matched 
yet, only assembly encoding support.

llvm-svn: 105521
 2010-06-05 03:53:24 +00:00
Daniel Dunbar 5661c0c755 tblgen/Target: Add a isAsmParserOnly bit, and teach the disassembler to honor 
it.

llvm-svn: 104270
 2010-05-20 20:20:32 +00:00
Sean Callanan e7e1cf9fbd Eliminated the classification of control registers into %ecr_ 
and %rcr_, leaving just %cr_ which is what people expect.
Updated the disassembler to support this unified register set.
Added a testcase to verify that the registers continue to be
decoded correctly.

llvm-svn: 103196
 2010-05-06 20:59:00 +00:00
Sean Callanan 1efe661b46 Fixed a bug where the disassembler would allow an immediate 
argument that had to be between 0 and 7 to have any value,
firing an assert later in the AsmPrinter.  Now, the
disassembler rejects instructions with out-of-range values
for that immediate.

llvm-svn: 100694
 2010-04-07 21:42:19 +00:00
Evan Cheng 44be5362d6 Check in tablegen changes to fix disassembler related failures caused by r98465. 
llvm-svn: 98468
 2010-03-14 05:15:39 +00:00
Sean Callanan 69c0226ba8 Changed the table generator so that the X86 
disassembler never recognizes InitReg instructions.

llvm-svn: 97017
 2010-02-24 02:56:25 +00:00
Sean Callanan 4d804d794f Added the rdtscp instruction to the x86 instruction 
tables.

llvm-svn: 96073
 2010-02-13 02:06:11 +00:00
Sean Callanan 44232af55a Fixed encodings for invlpg, invept, and invvpid. 
llvm-svn: 96065
 2010-02-13 01:48:34 +00:00
Chris Lattner 140caa7240 remove special cases for vmlaunch, vmresume, vmxoff, and swapgs 
fix swapgs to be spelled right.

llvm-svn: 96058
 2010-02-13 00:41:14 +00:00
Chris Lattner 064e926362 Remove special cases for [LM]FENCE, MONITOR and MWAIT from 
encoder and decoder by using new MRM_ forms.

llvm-svn: 96048
 2010-02-12 23:54:57 +00:00
Sean Callanan dde9c12307 Reworked the Intel disassembler to support instructions 
whose opcodes extend into the ModR/M field using the
Form field of the instruction rather than by special
casing each instruction.  Commented out the special
casing of VMCALL, which is the first instruction to use
this special form.  While I was in the neighborhood,
added a few comments for people modifying the Intel
disassembler. 

llvm-svn: 96043
 2010-02-12 23:39:46 +00:00
Chris Lattner f7477e599f add a bunch of mod/rm encoding types for fixed mod/rm bytes. 
This will work better for the disassembler for modeling things
like lfence/monitor/vmcall etc.

llvm-svn: 95960
 2010-02-12 02:06:33 +00:00
Chris Lattner a9dfb1bc07 Introduce a new CodeGenInstruction::ConstraintInfo class 
for representing constraint info semantically instead of
as a c expression that will be blatted out to the .inc
file.  Fix X86RecognizableInstr to use this instead of
parsing C code :).

llvm-svn: 95753
 2010-02-10 01:45:28 +00:00
Sean Callanan 36eab80875 Fixes to the X86 disassembler: 
Made LEA memory operands emit only 4 MCInst operands.
Made the scale operand equal 1 for instructions that have no
SIB byte.

llvm-svn: 91919
 2009-12-22 21:12:55 +00:00
Daniel Dunbar f008ea5fa0 Add missing newlines at EOF (for clang++). 
llvm-svn: 91756
 2009-12-19 04:16:48 +00:00
Sean Callanan 04cc307edd Table-driven disassembler for the X86 architecture (16-, 32-, and 64-bit 
incarnations), integrated into the MC framework.  

The disassembler is table-driven, using a custom TableGen backend to 
generate hierarchical tables optimized for fast decode.  The disassembler 
consumes MemoryObjects and produces arrays of MCInsts, adhering to the 
abstract base class MCDisassembler (llvm/MC/MCDisassembler.h).

The disassembler is documented in detail in

- lib/Target/X86/Disassembler/X86Disassembler.cpp (disassembler runtime)
- utils/TableGen/DisassemblerEmitter.cpp (table emitter)

You can test the disassembler by running llvm-mc -disassemble for i386
or x86_64 targets.  Please let me know if you encounter any problems
with it.

llvm-svn: 91749
 2009-12-19 02:59:52 +00:00