Commit Graph

17013 Commits

Author SHA1 Message Date
Simon Pilgrim c708868cb1 [X86] Split WriteFRcp/WriteFRsqrt/WriteFSqrt into XMM and YMM/ZMM scheduler classes
llvm-svn: 331290
2018-05-01 18:06:07 +00:00
Simon Pilgrim c546f9424f [X86] Split WriteFCmp into XMM and YMM/ZMM scheduler classes
Removes more WriteFCmp InstRW overrides

llvm-svn: 331283
2018-05-01 16:50:16 +00:00
Simon Pilgrim 5269167f5b [X86] Split WriteFAdd into XMM and YMM/ZMM scheduler classes
Removes more WriteFAdd InstRW overrides

llvm-svn: 331276
2018-05-01 16:13:42 +00:00
Simon Pilgrim 1b7a80d80a [X86] Convert all uses of WriteFAdd to X86SchedWriteWidths.
In preparation of splitting WriteFAdd by vector width.

llvm-svn: 331273
2018-05-01 15:57:17 +00:00
Adrian Prantl 5f8f34e459 Remove \brief commands from doxygen comments.
We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.

Patch produced by

  for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done

Differential Revision: https://reviews.llvm.org/D46290

llvm-svn: 331272
2018-05-01 15:54:18 +00:00
Simon Pilgrim dd8eae128b [X86] Split WriteFShuffle into XMM and YMM/ZMM scheduler classes
Removes more WriteFShuffle InstRW overrides

llvm-svn: 331264
2018-05-01 14:25:01 +00:00
Simon Pilgrim f6b81dae9e [X86] Convert all uses of WriteFShuffle to X86SchedWriteWidths.
In preparation of splitting WriteFShuffle by vector width.

llvm-svn: 331262
2018-05-01 14:14:42 +00:00
Simon Pilgrim 57f2b185ac [X86] Split WriteVecLogic into XMM and YMM/ZMM scheduler classes
This removes all the WriteVecLogic InstRW overrides.

llvm-svn: 331258
2018-05-01 12:39:17 +00:00
Simon Pilgrim 6f710a6440 [X86] Convert all uses of WriteFLogic/WriteVecLogic to X86SchedWriteWidths.
In preparation of splitting WriteVecLogic by vector width.

llvm-svn: 331256
2018-05-01 12:15:29 +00:00
Simon Pilgrim fc0c26f1a6 [X86] Tag PSLLDQ/PSRLDQ as WriteShuffle scheduler classes instead of shifts.
Although they are encoded similar to bit shifts, the byte shifts behave like shuffles from a scheduling point of view.

llvm-svn: 331253
2018-05-01 11:05:42 +00:00
Andrea Di Biagio d4c58400c5 [X86] Correct spill slot size.
This patch fixes a bug introduced by revision 330778 (originally reviewed at:
https://reviews.llvm.org/D44782), where function isFrameLoadOpcode returned
the wrong number of bytes read for opcodes VMOVSSrm and VMOVSDrm.

This corrects that mistake, and extends the regression test to catch cases where
the dead stores should be removed.

Patch by Jeremy Morse.

Differential Revision: https://reviews.llvm.org/D46256

llvm-svn: 331252
2018-05-01 10:29:38 +00:00
Gabor Buella c8ded04e85 [X86] movdiri and movdir64b instructions
Reviewers: spatel, craig.topper, RKSimon

Reviewed By: craig.topper, RKSimon

Differential Revision: https://reviews.llvm.org/D45983

llvm-svn: 331248
2018-05-01 10:01:16 +00:00
Craig Topper 33dc01d105 [X86] Remove 'opaque ptr' from the intel syntax parser and printer.
Previously for instructions like fxsave we would print "opaque ptr" as part of the memory operand. Now we print nothing.

We also no longer accept "opaque ptr" in the parser. We still accept any size to be specified for these instructions, but we may want to consider only parsing when no explicit size is specified. This what gas does.

llvm-svn: 331243
2018-05-01 04:42:00 +00:00
Simon Pilgrim 3c35408e48 [X86] Introduce X86SchedWriteWidths schedule wrapper for different vector widths.
We need to split most of the scheduler classes by vector width to remove more of the InstRW overrides, this patch should make this easier/tidier by allowing us to pass the X86SchedWriteWidths wrapper to multi-width multiclasses and then split as required.

I've included fields for Scl (scalar float/double), MMX (MMX integer), XMM, YMM and ZMM widths. These fields mostly share the same classes but it should give us the flexibility that we may need in the future.

This patch has replaced a set of example SSE/AVX512 instruction cases but isn't exhaustive as it gets very noisy before we really need the functionality.

Differential Revision: https://reviews.llvm.org/D46266

llvm-svn: 331208
2018-04-30 18:18:38 +00:00
Simon Pilgrim c80a5aa09a [X86][Atom] Remove unnecessary x87 load/move instrw overrides.
llvm-svn: 331198
2018-04-30 16:51:13 +00:00
Simon Pilgrim 0a732da261 [X86] Drop unnecessary VPORrm InstrRW override in SkylakeServer.
llvm-svn: 331188
2018-04-30 15:18:33 +00:00
Simon Pilgrim b521ec7525 [X86] Fix SkylakeServer typo in WritePSADBW class - it only uses 1 resource.
llvm-svn: 331187
2018-04-30 15:17:16 +00:00
Nico Weber 432a38838d IWYU for llvm-config.h in llvm, additions.
See r331124 for how I made a list of files missing the include.
I then ran this Python script:

    for f in open('filelist.txt'):
        f = f.strip()
        fl = open(f).readlines()

        found = False
        for i in xrange(len(fl)):
            p = '#include "llvm/'
            if not fl[i].startswith(p):
                continue
            if fl[i][len(p):] > 'Config':
                fl.insert(i, '#include "llvm/Config/llvm-config.h"\n')
                found = True
                break
        if not found:
            print 'not found', f
        else:
            open(f, 'w').write(''.join(fl))

and then looked through everything with `svn diff | diffstat -l | xargs -n 1000 gvim -p`
and tried to fix include ordering and whatnot.

No intended behavior change.

llvm-svn: 331184
2018-04-30 14:59:11 +00:00
Simon Pilgrim 318f816f49 [X86] Fix typo in skylake-avx512 model for PMAXSD/PMINSD instructions
The PMAXSD/PMINSD instregexs had been written as PMAX(C?)SD - looks like this was a search+replace error when matching float MAXSD/MINSD commutative instructions.

llvm-svn: 331167
2018-04-30 10:46:35 +00:00
Craig Topper 5a4c88005c [X86] Add a Requires<[In64BitMode]> to FARJMP64
Otherwise we can try to assemble it in 32-bit mode and throw an assert in the encoder.

llvm-svn: 331161
2018-04-30 06:21:24 +00:00
Craig Topper d94002c414 [X86] Hide another instruction from the assembly matcher table to avoid a duplicate entry. NFC
llvm-svn: 331160
2018-04-30 06:21:23 +00:00
Craig Topper cda7690976 [X86] Remove some InstAliases aren't needed because a MnemonicAlias makes them unreachable.
llvm-svn: 331159
2018-04-30 06:21:22 +00:00
Craig Topper 429ae3d775 [X86] Remove some instructions from the Intel assembly matcher table as there are equivalent mode aware InstAliases that conflict.
The instructions have predicates of Not64BitMode, but there are identical strings in InstAliases that have Mode32Bit and Mode16Bit. But the ordering is uncontrolled and the less specific Not64BitMode was ordered first.

This patch hides the Not64BitMode from the table so there is no conflict anymore.

llvm-svn: 331158
2018-04-30 06:21:21 +00:00
Craig Topper ebc7de07ee [X86] Use a MnemonicAlias instead of an InstAlias.
llvm-svn: 331157
2018-04-30 06:21:19 +00:00
Craig Topper 64e7a16fe4 [X86] Remove support for accepting 'fnstsw %eax' and 'fnstsw %al'.
I assume this was done because gas accepted it at one point, but current versions of gas don't.

llvm-svn: 331154
2018-04-30 01:53:12 +00:00
Craig Topper b2bf3da152 [X86] Mark some more InstAliases as 'att' syntax only.
These aliases are used to default the memory forms of call and jmp to the size of the operating mode. This doesn't work for Intel syntax. We have a different hack in the AsmParser code itself to force a size on unsized memory operands.

llvm-svn: 331153
2018-04-30 01:53:10 +00:00
Craig Topper 5731558979 [X86] Make 64-bit sysret/sysexit not ambiguous in Intel assembly syntax.
This also makes it default to the 32-bit non REX.W version in 64-bit mode. This seems to be more consistent with gas.

llvm-svn: 331149
2018-04-29 22:55:54 +00:00
Simon Pilgrim 288c73e7be [X86] Remove unnecessary BT InstRW overrides.
llvm-svn: 331147
2018-04-29 18:18:51 +00:00
Simon Pilgrim d5ada498db [X86] Merge more instregex single matches to reduce InstrRW compile time.
llvm-svn: 331143
2018-04-29 15:33:15 +00:00
Simon Pilgrim 684a719270 [X86] Remove unnecessary add/adc+sub/sbb InstRW overrides.
llvm-svn: 331142
2018-04-29 14:16:17 +00:00
Craig Topper 18c4c8efaf [X86] Add suffixes to the LGDT/LIDT/SGDT/SIDT mnemonics in Intel syntax. Add aliases based on 16/32-bit mode to choose the default.
This allows the instruction selection to follow mode in Intel syntax. And allows a suffix to be used to change size.

This matches gas behavior from what I could tell.

llvm-svn: 331138
2018-04-29 06:24:09 +00:00
Craig Topper ebd3e4a69c [X86] Remove SLDT64m instruction.
It doesn't really exist. The instruction always writes 16-bits of memory. Putting a REX.w on it won't change anything.

While I was touching the encoding tests to remove it, I added some other missing register form test cases.

llvm-svn: 331135
2018-04-29 04:50:53 +00:00
Craig Topper 8e3dbfd725 [X86] Remove unnecessary InstAliases. NFCI
These used to disambiguate MOV16ms/MOV16sm from other size instructions that no longer exist.

llvm-svn: 331134
2018-04-29 04:06:02 +00:00
Craig Topper a3f52aaa19 [X86] Use getX86SubSuperRegister in addGR32orGR64Operands in the AsmParser instead of duplicating its functionality. NFC
llvm-svn: 331128
2018-04-29 00:53:10 +00:00
Craig Topper 06624e1a93 [X86] Restrict many of the InstAliases to either to only att or intel syntax. NFCI
Many of these aliases exist to give one syntax or the other a slightly different mnemonic and the other variant gets a duplicate of its normal mnemonic

This patch restricts a lot of these to only one variant so we don't get the duplication.

This removes a lot of duplicate entries from the matcher table. It also reduces the number of warnings printed when you enable the ambiguous match warning in tablegen.

llvm-svn: 331117
2018-04-28 18:46:11 +00:00
Simon Pilgrim badf63e95c [X86] Remove unnecessary rotate-carry folded InstRW overrides.
Merge some remaining instregex entries.

llvm-svn: 331116
2018-04-28 18:45:16 +00:00
Simon Pilgrim 39d7720354 [X86] Remove unnecessary shift/rotate folded InstRW overrides.
llvm-svn: 331110
2018-04-28 15:32:19 +00:00
Simon Pilgrim 9f561dd54a [X86][SSE] Stop hard coding some instruction scheduler classes.
Make these arguments to the multiclass to allow easier specialization.

llvm-svn: 331107
2018-04-28 14:08:51 +00:00
Simon Pilgrim c2fa056a2d [X86][HW] Cleanup Haswell model. NFCI.
Moved LAHF/SAHF to instrs instead of instregex.

Removed some unnecessary instregex entries.

llvm-svn: 331106
2018-04-28 14:06:28 +00:00
Craig Topper 9e11f96df6 [X86] Remove mayLoad flag from BNDMK/BNDCL/BNDCN/BNDCU.
The instruction documentation specifically says that these instruction don't access memory.

llvm-svn: 331105
2018-04-28 06:58:27 +00:00
Craig Topper 6d6b2b9503 [X86] Change memory operand of BNDMK/BNDCL/BNDCU/BNDCN/BNDST to anymem.
These instruction don't use their memory operands as normal memory operands. They're just used as addresses. They don't have a size because they aren't directly representing a load or store.

llvm-svn: 331104
2018-04-28 06:58:26 +00:00
Craig Topper ef3866a859 [X86] Remove REX.W from 64-bit mode BND instructions.
As far as I can tell from the docs, the instructions are automatically 64-bit in 64-bit mode. We don't need REX.W.

llvm-svn: 331102
2018-04-28 06:02:40 +00:00
Craig Topper 8a6532ae84 [X86] Rename BNDMOV instructions and hide redundant instruction encoding from the assembler.
Favor the 0x1a encoding for register/register move to match gas.

The instructions used RM and MR in their name along with rr/rm/mr at the end. To make more consistent with other instructions remove the RM/MR and use rr/rm/mr/rr_REV.

Hide the _REV encoding from the assembler but leave it for the disassembler.

llvm-svn: 331101
2018-04-28 06:02:39 +00:00
Craig Topper d656410293 [X86] Make the STTNI flag intrinsics use the flags from pcmpestrm/pcmpistrm if the mask instrinsics are also used in the same basic block.
Summary:
Previously the flag intrinsics always used the index instructions even if a mask instruction also exists.

To fix fix this I've created a single ISD node type that returns index, mask, and flags. The SelectionDAG CSE process will merge all flavors of intrinsics with the same inputs to a s ingle node. Then during isel we just have to look at which results are used to know what instruction to generate. If both mask and index are used we'll need to emit two instructions. But for all other cases we can emit a single instruction.

Since I had to do manual isel anyway, I've removed the pseudo instructions and custom inserter code that was working around tablegen limitations with multiple implicit defs.

I've also renamed the recently added sse42.ll test case to sttni.ll since it focuses on that subset of the sse4.2 instructions.

Reviewers: chandlerc, RKSimon, spatel

Reviewed By: chandlerc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D46202

llvm-svn: 331091
2018-04-27 22:15:33 +00:00
Simon Pilgrim 8ee7d01dcf [X86] Merge some x87 instruction instregex single matches. NFCI.
llvm-svn: 331084
2018-04-27 21:14:19 +00:00
Simon Pilgrim 8a937e00d8 [X86] Split WriteFBlend/WriteFVarBlend/WriteFVarShuffle into XMM and YMM/ZMM scheduler classes
This removes all the WriteFBlend/WriteFVarBlend InstRW overrides - some WriteFVarShuffle remain to be fixed.

llvm-svn: 331065
2018-04-27 18:19:48 +00:00
Simon Pilgrim c3c767bf50 [X86] Split WriteFHadd into XMM and YMM/ZMM scheduler classes
This removes all the HADD/HSUB PS/PD InstRW overrides.

llvm-svn: 331054
2018-04-27 16:11:57 +00:00
Simon Pilgrim b2aa89c909 [X86][AVX] Split WriteFLogic into XMM and YMM/ZMM scheduler classes
This removes all the AND/ANDN/OR/XOR PS/PD InstRW overrides.

llvm-svn: 331051
2018-04-27 15:50:33 +00:00
Simon Pilgrim aef5ca7299 [X86] Replace some system instruction instregex single matches with instrs entry. NFCI.
llvm-svn: 331034
2018-04-27 13:32:42 +00:00
Chandler Carruth 16429acacb [x86] Revert r330322 (& r330323): Lowering x86 adds/addus/subs/subus intrinsics
The LLVM commit introduces a crash in LLVM's instruction selection.

I filed http://llvm.org/PR37260 with the test case.

llvm-svn: 330997
2018-04-26 21:46:01 +00:00