7d6e8f2a96
If we vectorize a e.g. store, we leave around a bunch of getelementptrs for the individual scalar stores which we removed. We can go ahead and delete them as well. This is purely for test output quality and readability. It should have no effect in any sane pipeline. Differential Revision: https://reviews.llvm.org/D122493
134 lines
5.9 KiB
LLVM
134 lines
5.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -basic-aa -slp-vectorizer -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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; int foo(int * restrict B, int * restrict A, int n, int m) {
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; B[0] = n * A[0] + m * A[0];
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; B[1] = n * A[1] + m * A[1];
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; B[2] = n * A[2] + m * A[2];
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; B[3] = n * A[3] + m * A[3];
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; return 0;
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; }
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define i32 @foo(i32* noalias nocapture %B, i32* noalias nocapture %A, i32 %n, i32 %m) #0 {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[MUL238:%.*]] = add i32 [[M:%.*]], [[N:%.*]]
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; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[A:%.*]] to <4 x i32>*
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; CHECK-NEXT: [[TMP1:%.*]] = load <4 x i32>, <4 x i32>* [[TMP0]], align 4
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; CHECK-NEXT: [[TMP2:%.*]] = insertelement <4 x i32> poison, i32 [[MUL238]], i32 0
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; CHECK-NEXT: [[SHUFFLE:%.*]] = shufflevector <4 x i32> [[TMP2]], <4 x i32> poison, <4 x i32> zeroinitializer
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; CHECK-NEXT: [[TMP3:%.*]] = mul <4 x i32> [[TMP1]], [[SHUFFLE]]
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; CHECK-NEXT: [[TMP4:%.*]] = bitcast i32* [[B:%.*]] to <4 x i32>*
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; CHECK-NEXT: store <4 x i32> [[TMP3]], <4 x i32>* [[TMP4]], align 4
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%0 = load i32, i32* %A, align 4
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%mul238 = add i32 %m, %n
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%add = mul i32 %0, %mul238
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store i32 %add, i32* %B, align 4
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%arrayidx4 = getelementptr inbounds i32, i32* %A, i64 1
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%1 = load i32, i32* %arrayidx4, align 4
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%add8 = mul i32 %1, %mul238
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%arrayidx9 = getelementptr inbounds i32, i32* %B, i64 1
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store i32 %add8, i32* %arrayidx9, align 4
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%arrayidx10 = getelementptr inbounds i32, i32* %A, i64 2
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%2 = load i32, i32* %arrayidx10, align 4
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%add14 = mul i32 %2, %mul238
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%arrayidx15 = getelementptr inbounds i32, i32* %B, i64 2
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store i32 %add14, i32* %arrayidx15, align 4
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%arrayidx16 = getelementptr inbounds i32, i32* %A, i64 3
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%3 = load i32, i32* %arrayidx16, align 4
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%add20 = mul i32 %3, %mul238
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%arrayidx21 = getelementptr inbounds i32, i32* %B, i64 3
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store i32 %add20, i32* %arrayidx21, align 4
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ret i32 0
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}
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; int extr_user(int * restrict B, int * restrict A, int n, int m) {
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; B[0] = n * A[0] + m * A[0];
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; B[1] = n * A[1] + m * A[1];
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; B[2] = n * A[2] + m * A[2];
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; B[3] = n * A[3] + m * A[3];
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; return A[0];
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; }
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define i32 @extr_user(i32* noalias nocapture %B, i32* noalias nocapture %A, i32 %n, i32 %m) {
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; CHECK-LABEL: @extr_user(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[MUL238:%.*]] = add i32 [[M:%.*]], [[N:%.*]]
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; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[A:%.*]] to <4 x i32>*
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; CHECK-NEXT: [[TMP1:%.*]] = load <4 x i32>, <4 x i32>* [[TMP0]], align 4
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; CHECK-NEXT: [[TMP2:%.*]] = insertelement <4 x i32> poison, i32 [[MUL238]], i32 0
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; CHECK-NEXT: [[SHUFFLE:%.*]] = shufflevector <4 x i32> [[TMP2]], <4 x i32> poison, <4 x i32> zeroinitializer
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; CHECK-NEXT: [[TMP3:%.*]] = mul <4 x i32> [[TMP1]], [[SHUFFLE]]
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; CHECK-NEXT: [[TMP4:%.*]] = bitcast i32* [[B:%.*]] to <4 x i32>*
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; CHECK-NEXT: store <4 x i32> [[TMP3]], <4 x i32>* [[TMP4]], align 4
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; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x i32> [[TMP1]], i32 0
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; CHECK-NEXT: ret i32 [[TMP5]]
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;
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entry:
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%0 = load i32, i32* %A, align 4
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%mul238 = add i32 %m, %n
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%add = mul i32 %0, %mul238
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store i32 %add, i32* %B, align 4
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%arrayidx4 = getelementptr inbounds i32, i32* %A, i64 1
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%1 = load i32, i32* %arrayidx4, align 4
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%add8 = mul i32 %1, %mul238
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%arrayidx9 = getelementptr inbounds i32, i32* %B, i64 1
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store i32 %add8, i32* %arrayidx9, align 4
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%arrayidx10 = getelementptr inbounds i32, i32* %A, i64 2
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%2 = load i32, i32* %arrayidx10, align 4
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%add14 = mul i32 %2, %mul238
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%arrayidx15 = getelementptr inbounds i32, i32* %B, i64 2
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store i32 %add14, i32* %arrayidx15, align 4
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%arrayidx16 = getelementptr inbounds i32, i32* %A, i64 3
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%3 = load i32, i32* %arrayidx16, align 4
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%add20 = mul i32 %3, %mul238
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%arrayidx21 = getelementptr inbounds i32, i32* %B, i64 3
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store i32 %add20, i32* %arrayidx21, align 4
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ret i32 %0 ;<--------- This value has multiple users
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}
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; In this example we have an external user that is not the first element in the vector.
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define i32 @extr_user1(i32* noalias nocapture %B, i32* noalias nocapture %A, i32 %n, i32 %m) {
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; CHECK-LABEL: @extr_user1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[MUL238:%.*]] = add i32 [[M:%.*]], [[N:%.*]]
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; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[A:%.*]] to <4 x i32>*
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; CHECK-NEXT: [[TMP1:%.*]] = load <4 x i32>, <4 x i32>* [[TMP0]], align 4
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; CHECK-NEXT: [[TMP2:%.*]] = insertelement <4 x i32> poison, i32 [[MUL238]], i32 0
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; CHECK-NEXT: [[SHUFFLE:%.*]] = shufflevector <4 x i32> [[TMP2]], <4 x i32> poison, <4 x i32> zeroinitializer
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; CHECK-NEXT: [[TMP3:%.*]] = mul <4 x i32> [[TMP1]], [[SHUFFLE]]
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; CHECK-NEXT: [[TMP4:%.*]] = bitcast i32* [[B:%.*]] to <4 x i32>*
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; CHECK-NEXT: store <4 x i32> [[TMP3]], <4 x i32>* [[TMP4]], align 4
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; CHECK-NEXT: [[TMP5:%.*]] = extractelement <4 x i32> [[TMP1]], i32 1
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; CHECK-NEXT: ret i32 [[TMP5]]
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;
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entry:
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%0 = load i32, i32* %A, align 4
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%mul238 = add i32 %m, %n
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%add = mul i32 %0, %mul238
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store i32 %add, i32* %B, align 4
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%arrayidx4 = getelementptr inbounds i32, i32* %A, i64 1
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%1 = load i32, i32* %arrayidx4, align 4
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%add8 = mul i32 %1, %mul238
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%arrayidx9 = getelementptr inbounds i32, i32* %B, i64 1
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store i32 %add8, i32* %arrayidx9, align 4
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%arrayidx10 = getelementptr inbounds i32, i32* %A, i64 2
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%2 = load i32, i32* %arrayidx10, align 4
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%add14 = mul i32 %2, %mul238
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%arrayidx15 = getelementptr inbounds i32, i32* %B, i64 2
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store i32 %add14, i32* %arrayidx15, align 4
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%arrayidx16 = getelementptr inbounds i32, i32* %A, i64 3
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%3 = load i32, i32* %arrayidx16, align 4
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%add20 = mul i32 %3, %mul238
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%arrayidx21 = getelementptr inbounds i32, i32* %B, i64 3
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store i32 %add20, i32* %arrayidx21, align 4
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ret i32 %1 ;<--------- This value has multiple users
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}
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