Simon Pilgrim 7d8c42b67e [X86] Emit 11-byte or 15-byte NOPs on recent AMD targets, else default to 10-byte NOPs (PR22965) ...

We currently emit up to 15-byte NOPs on all targets (apart from Silvermont), which stalls performance on some targets with decoders that struggle with 2 or 3 more '66' prefixes.

This patch flags recent AMD targets (btver1/znver1) to still emit 15-byte NOPs and bdver* targets to emit 11-byte NOPs. All other targets now emit 10-byte NOPs apart from SilverMont CPUs which still emit 7-byte NOPS.

Differential Revision: https://reviews.llvm.org/D42616

llvm-svn: 323693

2018-01-29 21:24:31 +00:00

..

AArch64

[AArch64][SVE] Asm: PTRUE and PTRUES instructions

2018-01-22 15:29:19 +00:00

AMDGPU

[AMDGPU][MC] Corrected parsing of image opcode modifiers r128 and d16

2018-01-29 14:20:42 +00:00

ARM

[DWARFv5] Number the line-table's directory array correctly.

2018-01-18 20:33:35 +00:00

AsmParser

Add triples or specify REQUIRES: default_triple to some tests

2018-01-27 23:31:09 +00:00

AVR

[AVR] Implement some missing code paths

2017-12-11 11:01:27 +00:00

BPF

bpf: print backward branch target properly

2017-11-16 19:15:36 +00:00

COFF

[CodeView] Add line numbers for inlined call sites

2018-01-18 22:55:43 +00:00

Disassembler

[AMDGPU][MC] Corrected parsing of image opcode modifiers r128 and d16

2018-01-29 14:20:42 +00:00

ELF

[NFC] fix trivial typos in comments and documents

2018-01-29 05:17:03 +00:00

Hexagon

[Hexagon] Add support for Hexagon V65

2017-12-11 18:57:54 +00:00

Lanai

[lanai] Add more tests for assembly of conditional ALU ops

2016-07-11 17:58:16 +00:00

MachO

[X86] Emit 11-byte or 15-byte NOPs on recent AMD targets, else default to 10-byte NOPs (PR22965)

2018-01-29 21:24:31 +00:00

Markup

…

Mips

[mips] Properly select abs and sqrt instructions

2018-01-23 10:09:39 +00:00

PowerPC

[PowerPC, AsmParser] Enable the mnemonic spell corrector

2017-12-16 02:42:18 +00:00

RISCV

[RISCV] Encode RISCV specific ELF e_flags to RISCV Binary by RISCVTargetStreamer

2018-01-26 07:53:07 +00:00

Sparc

[Sparc] invalid adjustments in TLS_LE/TLS_LDO relocations removed

2017-07-25 15:28:28 +00:00

SystemZ

[SystemZ, AsmParser] Enable the mnemonic spell corrector.

2017-07-18 09:17:00 +00:00

WebAssembly

[WebAssembly] MC: Use inline triple in test bitcode files

2018-01-23 23:03:47 +00:00

X86

[X86] Emit 11-byte or 15-byte NOPs on recent AMD targets, else default to 10-byte NOPs (PR22965)

2018-01-29 21:24:31 +00:00