Skip to content

[VectorCombine] Use getInstructionCost to cost Shuffle. #122068

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Jan 8, 2025
Merged

[VectorCombine] Use getInstructionCost to cost Shuffle. #122068

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 1 addition & 3 deletions llvm/lib/Transforms/Vectorize/VectorCombine.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2023,9 +2023,7 @@ bool VectorCombine::foldShuffleOfShuffles(Instruction &I) {
if (Match1)
InnerCost1 = TTI.getInstructionCost(cast<Instruction>(OuterV1), CostKind);

InstructionCost OuterCost = TTI.getShuffleCost(
TargetTransformInfo::SK_PermuteTwoSrc, ShuffleImmTy, OuterMask, CostKind,
0, nullptr, {OuterV0, OuterV1}, &I);
InstructionCost OuterCost = TTI.getInstructionCost(&I, CostKind);

InstructionCost OldCost = InnerCost0 + InnerCost1 + OuterCost;

Expand Down
10 changes: 6 additions & 4 deletions llvm/test/Transforms/PhaseOrdering/AArch64/block_scaling_decompr_8bit.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -416,21 +416,23 @@ define internal noundef <8 x i16> @_ZL24cmplx_mul_combined_re_im11__Int16x8_t20c
; CHECK-NEXT: [[SCALE_SROA_0_0_EXTRACT_TRUNC:%.*]] = trunc i64 [[SCALE_COERCE]] to i16
; CHECK-NEXT: [[SCALE_SROA_2_0_EXTRACT_SHIFT36:%.*]] = lshr i64 [[SCALE_COERCE]], 16
; CHECK-NEXT: [[SCALE_SROA_2_0_EXTRACT_TRUNC:%.*]] = trunc i64 [[SCALE_SROA_2_0_EXTRACT_SHIFT36]] to i16
; CHECK-NEXT: [[SHUFFLE_I:%.*]] = shufflevector <8 x i16> [[A]], <8 x i16> poison, <8 x i32> <i32 1, i32 0, i32 3, i32 2, i32 5, i32 4, i32 7, i32 6>
; CHECK-NEXT: [[VECINIT_I19:%.*]] = insertelement <8 x i16> poison, i16 [[SCALE_SROA_0_0_EXTRACT_TRUNC]], i64 0
; CHECK-NEXT: [[VECINIT_I:%.*]] = insertelement <8 x i16> poison, i16 [[SCALE_SROA_2_0_EXTRACT_TRUNC]], i64 0
; CHECK-NEXT: [[VECINIT7_I:%.*]] = shufflevector <8 x i16> [[VECINIT_I]], <8 x i16> poison, <8 x i32> zeroinitializer
; CHECK-NEXT: [[VQNEGQ_V1_I:%.*]] = tail call <8 x i16> @llvm.aarch64.neon.sqneg.v8i16(<8 x i16> [[VECINIT7_I]])
; CHECK-NEXT: [[VBSL5_I:%.*]] = shufflevector <8 x i16> [[VQNEGQ_V1_I]], <8 x i16> [[VECINIT_I]], <8 x i32> <i32 0, i32 8, i32 2, i32 8, i32 4, i32 8, i32 6, i32 8>
; CHECK-NEXT: [[SHUFFLE_I85:%.*]] = shufflevector <8 x i16> [[A]], <8 x i16> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[SHUFFLE_I82:%.*]] = shufflevector <8 x i16> [[VECINIT_I19]], <8 x i16> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[VQDMULL_V2_I72:%.*]] = tail call <4 x i32> @llvm.aarch64.neon.sqdmull.v4i32(<4 x i16> [[SHUFFLE_I85]], <4 x i16> [[SHUFFLE_I82]])
; CHECK-NEXT: [[SHUFFLE_I97:%.*]] = shufflevector <8 x i16> [[A]], <8 x i16> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: [[VQDMULL_V2_I:%.*]] = tail call <4 x i32> @llvm.aarch64.neon.sqdmull.v4i32(<4 x i16> [[SHUFFLE_I97]], <4 x i16> [[SHUFFLE_I82]])
; CHECK-NEXT: [[SHUFFLE_I79:%.*]] = shufflevector <8 x i16> [[A]], <8 x i16> poison, <4 x i32> <i32 1, i32 0, i32 3, i32 2>
; CHECK-NEXT: [[SHUFFLE_I76:%.*]] = shufflevector <8 x i16> [[VQNEGQ_V1_I]], <8 x i16> [[VECINIT_I]], <4 x i32> <i32 0, i32 8, i32 2, i32 8>
; CHECK-NEXT: [[SHUFFLE_I79:%.*]] = shufflevector <8 x i16> [[SHUFFLE_I]], <8 x i16> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[SHUFFLE_I76:%.*]] = shufflevector <8 x i16> [[VBSL5_I]], <8 x i16> poison, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[VQDMLAL2_I106:%.*]] = tail call <4 x i32> @llvm.aarch64.neon.sqdmull.v4i32(<4 x i16> [[SHUFFLE_I79]], <4 x i16> [[SHUFFLE_I76]])
; CHECK-NEXT: [[VQDMLAL_V3_I107:%.*]] = tail call <4 x i32> @llvm.aarch64.neon.sqadd.v4i32(<4 x i32> [[VQDMULL_V2_I72]], <4 x i32> [[VQDMLAL2_I106]])
; CHECK-NEXT: [[SHUFFLE_I91:%.*]] = shufflevector <8 x i16> [[A]], <8 x i16> poison, <4 x i32> <i32 5, i32 4, i32 7, i32 6>
; CHECK-NEXT: [[SHUFFLE_I88:%.*]] = shufflevector <8 x i16> [[VQNEGQ_V1_I]], <8 x i16> [[VECINIT_I]], <4 x i32> <i32 4, i32 8, i32 6, i32 8>
; CHECK-NEXT: [[SHUFFLE_I91:%.*]] = shufflevector <8 x i16> [[SHUFFLE_I]], <8 x i16> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: [[SHUFFLE_I88:%.*]] = shufflevector <8 x i16> [[VBSL5_I]], <8 x i16> poison, <4 x i32> <i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: [[VQDMLAL2_I:%.*]] = tail call <4 x i32> @llvm.aarch64.neon.sqdmull.v4i32(<4 x i16> [[SHUFFLE_I91]], <4 x i16> [[SHUFFLE_I88]])
; CHECK-NEXT: [[VQDMLAL_V3_I:%.*]] = tail call <4 x i32> @llvm.aarch64.neon.sqadd.v4i32(<4 x i32> [[VQDMULL_V2_I]], <4 x i32> [[VQDMLAL2_I]])
; CHECK-NEXT: [[TMP0:%.*]] = bitcast <4 x i32> [[VQDMLAL_V3_I107]] to <8 x i16>
Expand Down
Loading