David Zarzycki 11c920207a [X86] Prefer KORTEST on Knights Landing or later for memcmp() ...

PTEST and especially the MOVMSK instructions are slow on Knights Landing
or later. As a bonus, this patch increases instruction parallelism by
emitting:
    KORTEST(PCMPNEQ(a, b), PCMPNEQ(c, d)) == 0
Instead of:
    KORTEST(AND(PCMPEQ(a, b), PCMPEQ(c, d))) == ~0

https://reviews.llvm.org/D69157

2019-10-26 21:14:57 +03:00

..

AArch64

[GlobalISel][AArch64][AMDGPU][X86] Teach LegalizationArtifactCombiner to combine trunc(g_constant).

2019-10-24 12:59:26 -07:00

AMDGPU

[AMDGPU] Fix Vreg_1 PHI lowering in SILowerI1Copies.

2019-10-26 14:37:45 +05:30

ARC

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ARM

Revert 4334892e7b "[DAGCombine][ARM] x ==/!= c -> (x - c) ==/!= 0 iff '-c' can be folded into the x node."

2019-10-23 19:52:02 +02:00

AVR

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BPF

[BPF] fix a CO-RE issue with -mattr=+alu32

2019-10-25 14:27:25 -07:00

Generic

Reapply r374743 with a fix for the ocaml binding

2019-10-14 16:15:14 +00:00

Hexagon

[DFAPacketizer] Use DFAEmitter. NFC.

2019-10-17 08:34:29 +00:00

Inputs

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Lanai

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Mips

[MIPS GlobalISel] Select MSA vector generic and builtin fsqrt

2019-10-25 14:45:14 +02:00

MIR

[MIParser] Set RegClassOrRegBank during instruction parsing

2019-10-22 14:25:37 +00:00

MSP430

[TargetLowering][DAGCombine][MSP430] add/use hook for Shift Amount Threshold (1/2)

2019-10-19 16:57:02 +00:00

NVPTX

[NVPTX] Restructure shfl instrinsics and add variants that return a predicate.

2019-10-14 16:53:34 +00:00

PowerPC

[DAGCombiner] widen zext of popcount based on target support

2019-10-25 14:10:51 -04:00

RISCV

[RISCV] Add support for half-precision floats

2019-10-25 14:02:02 +01:00

SPARC

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SystemZ

[FPEnv] Strict FP tests should use the requisite function attributes.

2019-10-04 17:03:46 +00:00

Thumb

(Re)generate various tests. NFC

2019-10-08 16:16:26 +00:00

Thumb2

[InstCombine] Known-bits optimization for ARM MVE VADC.

2019-10-24 16:33:13 +01:00

WebAssembly

[SDAG] fold extract_vector_elt with undef index

2019-10-25 19:27:26 -04:00

WinCFGuard

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WinEH

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X86

[X86] Prefer KORTEST on Knights Landing or later for memcmp()

2019-10-26 21:14:57 +03:00

XCore

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