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[SLP]Fix same/alternate analysis in split node analysis for compares #133769

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merged 2 commits into from
Mar 31, 2025
Merged

[SLP]Fix same/alternate analysis in split node analysis for compares #133769

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b21ebc5
[𝘀𝗽𝗿] initial version
alexey-bataev Mar 31, 2025
3e09430
Fix a crash in Spec2017
alexey-bataev Mar 31, 2025
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4 changes: 2 additions & 2 deletions llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
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Expand Up @@ -9013,8 +9013,8 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
Op1Indices.set(Idx);
continue;
}
InstructionsState NewS = getSameOpcode({LocalState.getMainOp(), I}, *TLI);
if (NewS && !NewS.isAltShuffle()) {
if (!isAlternateInstruction(I, LocalState.getMainOp(),
LocalState.getAltOp(), *TLI)) {
Op1.push_back(V);
Op1Indices.set(Idx);
continue;
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14 changes: 6 additions & 8 deletions llvm/test/Transforms/PhaseOrdering/X86/vector-reductions-logical.ll
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Expand Up @@ -86,10 +86,9 @@ return:
define float @test_merge_anyof_v4sf(<4 x float> %t) {
; CHECK-LABEL: @test_merge_anyof_v4sf(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = shufflevector <4 x float> [[T:%.*]], <4 x float> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[TMP1:%.*]] = fcmp ogt <8 x float> [[TMP0]], <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00>
; CHECK-NEXT: [[TMP2:%.*]] = fcmp olt <8 x float> [[TMP0]], <float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00>
; CHECK-NEXT: [[TMP3:%.*]] = shufflevector <8 x i1> [[TMP1]], <8 x i1> [[TMP2]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 12, i32 13, i32 14, i32 15>
; CHECK-NEXT: [[TMP0:%.*]] = fcmp olt <4 x float> [[T:%.*]], zeroinitializer
; CHECK-NEXT: [[TMP1:%.*]] = fcmp ogt <4 x float> [[T]], splat (float 1.000000e+00)
; CHECK-NEXT: [[TMP3:%.*]] = shufflevector <4 x i1> [[TMP1]], <4 x i1> [[TMP0]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: [[TMP4:%.*]] = freeze <8 x i1> [[TMP3]]
; CHECK-NEXT: [[TMP5:%.*]] = bitcast <8 x i1> [[TMP4]] to i8
; CHECK-NEXT: [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
Expand Down Expand Up @@ -401,10 +400,9 @@ return:
define float @test_merge_anyof_v4si(<4 x i32> %t) {
; CHECK-LABEL: @test_merge_anyof_v4si(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = shufflevector <4 x i32> [[T:%.*]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt <8 x i32> [[TMP0]], <i32 255, i32 255, i32 255, i32 255, i32 1, i32 1, i32 1, i32 1>
; CHECK-NEXT: [[TMP2:%.*]] = icmp slt <8 x i32> [[TMP0]], <i32 255, i32 255, i32 255, i32 255, i32 1, i32 1, i32 1, i32 1>
; CHECK-NEXT: [[TMP3:%.*]] = shufflevector <8 x i1> [[TMP1]], <8 x i1> [[TMP2]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 12, i32 13, i32 14, i32 15>
; CHECK-NEXT: [[TMP0:%.*]] = icmp slt <4 x i32> [[T:%.*]], splat (i32 1)
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt <4 x i32> [[T]], splat (i32 255)
; CHECK-NEXT: [[TMP3:%.*]] = shufflevector <4 x i1> [[TMP1]], <4 x i1> [[TMP0]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
; CHECK-NEXT: [[TMP4:%.*]] = freeze <8 x i1> [[TMP3]]
; CHECK-NEXT: [[TMP5:%.*]] = bitcast <8 x i1> [[TMP4]] to i8
; CHECK-NEXT: [[DOTNOT:%.*]] = icmp eq i8 [[TMP5]], 0
Expand Down
18 changes: 9 additions & 9 deletions llvm/test/Transforms/SLPVectorizer/X86/reduction-logical.ll
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Expand Up @@ -207,10 +207,10 @@ define i1 @logical_and_icmp_subvec(<4 x i32> %x) {

define i1 @logical_and_icmp_clamp(<4 x i32> %x) {
; CHECK-LABEL: @logical_and_icmp_clamp(
; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt <8 x i32> [[TMP1]], <i32 17, i32 17, i32 17, i32 17, i32 42, i32 42, i32 42, i32 42>
; CHECK-NEXT: [[TMP3:%.*]] = icmp slt <8 x i32> [[TMP1]], <i32 17, i32 17, i32 17, i32 17, i32 42, i32 42, i32 42, i32 42>
; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <8 x i1> [[TMP2]], <8 x i1> [[TMP3]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 12, i32 13, i32 14, i32 15>
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <4 x i32> [[X:%.*]], splat (i32 42)
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt <4 x i32> [[X]], splat (i32 17)
; CHECK-NEXT: [[TMP3:%.*]] = shufflevector <4 x i1> [[TMP2]], <4 x i1> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
; CHECK-NEXT: [[TMP4:%.*]] = call <8 x i1> @llvm.vector.insert.v8i1.v4i1(<8 x i1> [[TMP3]], <4 x i1> [[TMP1]], i64 4)
; CHECK-NEXT: [[TMP5:%.*]] = freeze <8 x i1> [[TMP4]]
; CHECK-NEXT: [[TMP6:%.*]] = call i1 @llvm.vector.reduce.and.v8i1(<8 x i1> [[TMP5]])
; CHECK-NEXT: ret i1 [[TMP6]]
Expand Down Expand Up @@ -239,12 +239,12 @@ define i1 @logical_and_icmp_clamp(<4 x i32> %x) {

define i1 @logical_and_icmp_clamp_extra_use_cmp(<4 x i32> %x) {
; CHECK-LABEL: @logical_and_icmp_clamp_extra_use_cmp(
; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt <8 x i32> [[TMP1]], <i32 17, i32 17, i32 17, i32 17, i32 42, i32 42, i32 42, i32 42>
; CHECK-NEXT: [[TMP3:%.*]] = icmp slt <8 x i32> [[TMP1]], <i32 17, i32 17, i32 17, i32 17, i32 42, i32 42, i32 42, i32 42>
; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <8 x i1> [[TMP2]], <8 x i1> [[TMP3]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 12, i32 13, i32 14, i32 15>
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <8 x i1> [[TMP4]], i32 6
; CHECK-NEXT: [[TMP1:%.*]] = icmp slt <4 x i32> [[X:%.*]], splat (i32 42)
; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x i1> [[TMP1]], i32 2
; CHECK-NEXT: call void @use1(i1 [[TMP5]])
; CHECK-NEXT: [[TMP3:%.*]] = icmp sgt <4 x i32> [[X]], splat (i32 17)
; CHECK-NEXT: [[TMP8:%.*]] = shufflevector <4 x i1> [[TMP3]], <4 x i1> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
; CHECK-NEXT: [[TMP4:%.*]] = call <8 x i1> @llvm.vector.insert.v8i1.v4i1(<8 x i1> [[TMP8]], <4 x i1> [[TMP1]], i64 4)
; CHECK-NEXT: [[TMP6:%.*]] = freeze <8 x i1> [[TMP4]]
; CHECK-NEXT: [[TMP7:%.*]] = call i1 @llvm.vector.reduce.and.v8i1(<8 x i1> [[TMP6]])
; CHECK-NEXT: ret i1 [[TMP7]]
Expand Down
29 changes: 19 additions & 10 deletions llvm/test/Transforms/SLPVectorizer/revec-reduction-logical.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: %if x86-registered-target %{ opt < %s -passes=slp-vectorizer -slp-revec -mtriple=x86_64 -S | FileCheck %s %}
; RUN: %if aarch64-registered-target %{ opt < %s -passes=slp-vectorizer -slp-revec -mtriple=aarch64-unknown-linux-gnu -S | FileCheck %s %}
; RUN: %if x86-registered-target %{ opt < %s -passes=slp-vectorizer -slp-revec -mtriple=x86_64 -S | FileCheck %s --check-prefixes=CHECK,X86 %}
; RUN: %if aarch64-registered-target %{ opt < %s -passes=slp-vectorizer -slp-revec -mtriple=aarch64-unknown-linux-gnu -S | FileCheck %s --check-prefixes=CHECK,AARCH64 %}

define i1 @logical_and_icmp_diff_preds(<4 x i32> %x) {
; CHECK-LABEL: @logical_and_icmp_diff_preds(
Expand Down Expand Up @@ -28,14 +28,23 @@ define i1 @logical_and_icmp_diff_preds(<4 x i32> %x) {
}

define i1 @logical_and_icmp_clamp(<4 x i32> %x) {
; CHECK-LABEL: @logical_and_icmp_clamp(
; CHECK-NEXT: [[TMP1:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
; CHECK-NEXT: [[TMP2:%.*]] = icmp sgt <8 x i32> [[TMP1]], <i32 17, i32 17, i32 17, i32 17, i32 42, i32 42, i32 42, i32 42>
; CHECK-NEXT: [[TMP3:%.*]] = icmp slt <8 x i32> [[TMP1]], <i32 17, i32 17, i32 17, i32 17, i32 42, i32 42, i32 42, i32 42>
; CHECK-NEXT: [[TMP4:%.*]] = shufflevector <8 x i1> [[TMP2]], <8 x i1> [[TMP3]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 12, i32 13, i32 14, i32 15>
; CHECK-NEXT: [[TMP5:%.*]] = freeze <8 x i1> [[TMP4]]
; CHECK-NEXT: [[TMP6:%.*]] = call i1 @llvm.vector.reduce.and.v8i1(<8 x i1> [[TMP5]])
; CHECK-NEXT: ret i1 [[TMP6]]
; X86-LABEL: @logical_and_icmp_clamp(
; X86-NEXT: [[TMP1:%.*]] = icmp slt <4 x i32> [[X:%.*]], splat (i32 42)
; X86-NEXT: [[TMP2:%.*]] = icmp sgt <4 x i32> [[X]], splat (i32 17)
; X86-NEXT: [[TMP3:%.*]] = shufflevector <4 x i1> [[TMP2]], <4 x i1> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
; X86-NEXT: [[TMP4:%.*]] = call <8 x i1> @llvm.vector.insert.v8i1.v4i1(<8 x i1> [[TMP3]], <4 x i1> [[TMP1]], i64 4)
; X86-NEXT: [[TMP5:%.*]] = freeze <8 x i1> [[TMP4]]
; X86-NEXT: [[TMP6:%.*]] = call i1 @llvm.vector.reduce.and.v8i1(<8 x i1> [[TMP5]])
; X86-NEXT: ret i1 [[TMP6]]
;
; AARCH64-LABEL: @logical_and_icmp_clamp(
; AARCH64-NEXT: [[TMP1:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 0, i32 1, i32 2, i32 3>
; AARCH64-NEXT: [[TMP2:%.*]] = icmp sgt <8 x i32> [[TMP1]], <i32 17, i32 17, i32 17, i32 17, i32 42, i32 42, i32 42, i32 42>
; AARCH64-NEXT: [[TMP3:%.*]] = icmp slt <8 x i32> [[TMP1]], <i32 17, i32 17, i32 17, i32 17, i32 42, i32 42, i32 42, i32 42>
; AARCH64-NEXT: [[TMP4:%.*]] = shufflevector <8 x i1> [[TMP2]], <8 x i1> [[TMP3]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 12, i32 13, i32 14, i32 15>
; AARCH64-NEXT: [[TMP5:%.*]] = freeze <8 x i1> [[TMP4]]
; AARCH64-NEXT: [[TMP6:%.*]] = call i1 @llvm.vector.reduce.and.v8i1(<8 x i1> [[TMP5]])
; AARCH64-NEXT: ret i1 [[TMP6]]
;
%x0 = extractelement <4 x i32> %x, i32 0
%x1 = extractelement <4 x i32> %x, i32 1
Expand Down