Gadi Haber b3ccb4ea78 This is a large patch for X86 AVX-512 of an optimization for reducing code size by encoding EVEX AVX-512 instructions using the shorter VEX encoding when possible. ...

There are cases of AVX-512 instructions that have two possible encodings. This is the case with instructions that use vector registers with low indexes of 0 - 15 and do not use the zmm registers or the mask k registers.
The EVEX encoding prefix requires 4 bytes whereas the VEX prefix can take only up to 3 bytes. Consequently, using the VEX encoding for these instructions results in a code size reduction of ~2 bytes even though it is compiled with the AVX-512 features enabled.

Reviewers: Craig Topper, Zvi Rackoover, Elena Demikhovsky 
Differential Revision: https://reviews.llvm.org/D27901



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@290663 91177308-0d34-0410-b5e6-96231b3b80d8

2016-12-28 10:12:48 +00:00

..

MCDisassembler

Use StringRef instead of raw pointers in MCAsmInfo/MCInstrInfo APIs (NFC)

2016-10-01 06:46:33 +00:00

MCParser

Allow ELF section flags to be specified numerically

2016-12-15 07:59:15 +00:00

CMakeLists.txt

Revert r283690, "MC: Remove unused entities."

2016-10-10 22:49:37 +00:00

ConstantPools.cpp

Fix 24560: assembler does not share constant pool for same constants

2016-11-04 19:17:32 +00:00

ELFObjectWriter.cpp

MC: ensure that we have a section before accessing it

2016-11-22 04:32:54 +00:00

LLVMBuild.txt

…

MachObjectWriter.cpp

Fix Clang-tidy readability-redundant-string-cstr warnings

2016-11-02 16:43:50 +00:00

MCAsmBackend.cpp

…

MCAsmInfo.cpp

…

MCAsmInfoCOFF.cpp

…

MCAsmInfoDarwin.cpp

…

MCAsmInfoELF.cpp

…

MCAsmStreamer.cpp

This is a large patch for X86 AVX-512 of an optimization for reducing code size by encoding EVEX AVX-512 instructions using the shorter VEX encoding when possible.

2016-12-28 10:12:48 +00:00

MCAssembler.cpp

[Assembler] Better error messages for .org directive

2016-12-14 10:43:58 +00:00

MCCodeEmitter.cpp

…

MCCodeView.cpp

Resubmit "[CodeView] Hook CodeViewRecordIO for reading/writing symbols."

2016-12-16 22:48:14 +00:00

MCContext.cpp

[ARM] Implement execute-only support in CodeGen

2016-12-15 07:59:08 +00:00

MCDwarf.cpp

Speculatively revert r289925, see PR31407

2016-12-16 14:02:28 +00:00

MCELFObjectTargetWriter.cpp

…

MCELFStreamer.cpp

[MC] Refactor emitELFSize to make usage more consistent. NFC.

2016-12-01 23:39:08 +00:00

MCExpr.cpp

[AMDGPU] Add 32-bit lo/hi got and pc relative variant kinds and emit appropriate relocations

2016-10-14 04:21:32 +00:00

MCFragment.cpp

ADT: Split ilist_node_traits into alloc and callback, NFC

2016-08-30 18:40:47 +00:00

MCInst.cpp

…

MCInstPrinter.cpp

…

MCInstrAnalysis.cpp

…

MCInstrDesc.cpp

…

MCLabel.cpp

…

MCLinkerOptimizationHint.cpp

…

MCMachObjectTargetWriter.cpp

…

MCMachOStreamer.cpp

…

MCNullStreamer.cpp

…

MCObjectFileInfo.cpp

…

MCObjectStreamer.cpp

[Assembler] Better error messages for .org directive

2016-12-14 10:43:58 +00:00

MCObjectWriter.cpp

…

MCRegisterInfo.cpp

Extract LaneBitmask into a separate type

2016-12-15 14:36:06 +00:00

MCSchedule.cpp

…

MCSection.cpp

MC: Move MCSection::begin/end to header, NFC

2016-09-12 00:17:09 +00:00

MCSectionCOFF.cpp

[MC] Handle discardable COFF sections in assembly

2016-09-14 22:41:50 +00:00

MCSectionELF.cpp

[ARM] Implement execute-only support in CodeGen

2016-12-15 07:59:08 +00:00

MCSectionMachO.cpp

Use StringRef in MCSectionMachO (NFC)

2016-10-05 01:02:34 +00:00

MCStreamer.cpp

[Assembler] Better error messages for .org directive

2016-12-14 10:43:58 +00:00

MCSubtargetInfo.cpp

…

MCSymbol.cpp

Retire llvm::alignOf in favor of C++11 alignof.

2016-10-20 15:02:18 +00:00

MCSymbolELF.cpp

…

MCTargetOptions.cpp

Summary: Currently there is no way to disable deprecated warning from asm like this

2016-12-05 23:55:13 +00:00

MCValue.cpp

…

MCWin64EH.cpp

…

MCWinEH.cpp

Revert r283690, "MC: Remove unused entities."

2016-10-10 22:49:37 +00:00

StringTableBuilder.cpp

[ADT] Move CachedHashString to its own header in ADT, and rename to CachedHashStringRef.

2016-10-17 22:24:36 +00:00

SubtargetFeature.cpp

…

WinCOFFObjectWriter.cpp

Fix comment typos. NFC.

2016-11-20 13:47:59 +00:00

WinCOFFStreamer.cpp

Revert "[CodeGen] Fix invalid DWARF info on Win64"

2016-12-08 01:56:23 +00:00