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[X86] Enable fast variable per-lane shuffle tuning on all Ryzen targets (PR44795) 

rGa3b8695bf592 enabled this for znver3, but AMD SoG, Agner and uops.info all agree that even znver1 has a fast per-lane shuffle op (VPSHUFB), but cross-lane shuffles seem to be slow (PERMPS etc.)

Fixes #44140

Differential Revision: https://reviews.llvm.org/D123306
This commit is contained in:
Simon Pilgrim 2022-04-07 16:00:42 +01:00
parent b2a7f1c390
commit cf3a09369a
2 changed files with 4 additions and 5 deletions
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5
llvm/lib/Target/X86/X86.td
View File

@ -1193,6 +1193,7 @@ def ProcessorFeatures {
TuningFastScalarFSQRT,
TuningFastVectorFSQRT,
TuningFastScalarShiftMasks,
TuningFastVariablePerLaneShuffle,
TuningFastMOVBE,
TuningSlowSHLD,
TuningSBBDepBreaking,
@ -1208,9 +1209,7 @@ def ProcessorFeatures {
FeaturePKU,
FeatureVAES,
FeatureVPCLMULQDQ];
list<SubtargetFeature> ZN3AdditionalTuning =
[TuningMacroFusion,
TuningFastVariablePerLaneShuffle];
list<SubtargetFeature> ZN3AdditionalTuning = [TuningMacroFusion];
list<SubtargetFeature> ZN3Tuning =
!listconcat(ZN2Tuning, ZN3AdditionalTuning);
list<SubtargetFeature> ZN3Features =

4
llvm/test/CodeGen/X86/vector-shuffle-fast-per-lane.ll
View File

@ -4,8 +4,8 @@
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx2,+fast-variable-perlane-shuffle | FileCheck %s --check-prefixes=FAST
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx512f,+fast-variable-perlane-shuffle | FileCheck %s --check-prefixes=FAST
;
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=znver1 | FileCheck %s --check-prefixes=SLOW
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=znver2 | FileCheck %s --check-prefixes=SLOW
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=znver1 | FileCheck %s --check-prefixes=FAST
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=znver2 | FileCheck %s --check-prefixes=FAST
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=znver3 | FileCheck %s --check-prefixes=FAST
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=haswell | FileCheck %s --check-prefixes=FAST
; RUN: llc < %s -mtriple=x86_64-unknown -mcpu=skx | FileCheck %s --check-prefixes=FAST