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https://github.com/c64scene-ar/llvm-6502.git
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507b9242ed
The external user does not have to be in lane #0. We have to save the lane for each scalar so that we know which vector lane to extract. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181674 91177308-0d34-0410-b5e6-96231b3b80d8
108 lines
3.8 KiB
LLVM
108 lines
3.8 KiB
LLVM
; RUN: opt < %s -basicaa -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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; CHECK: @foo
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; CHECK: load <4 x i32>
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; CHECK: mul <4 x i32>
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; CHECK: store <4 x i32>
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; CHECK: ret
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define i32 @foo(i32* noalias nocapture %B, i32* noalias nocapture %A, i32 %n, i32 %m) #0 {
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entry:
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%0 = load 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* %A, i64 1
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%1 = load i32* %arrayidx4, align 4
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%add8 = mul i32 %1, %mul238
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%arrayidx9 = getelementptr inbounds i32* %B, i64 1
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store i32 %add8, i32* %arrayidx9, align 4
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%arrayidx10 = getelementptr inbounds i32* %A, i64 2
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%2 = load i32* %arrayidx10, align 4
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%add14 = mul i32 %2, %mul238
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%arrayidx15 = getelementptr inbounds i32* %B, i64 2
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store i32 %add14, i32* %arrayidx15, align 4
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%arrayidx16 = getelementptr inbounds i32* %A, i64 3
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%3 = load i32* %arrayidx16, align 4
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%add20 = mul i32 %3, %mul238
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%arrayidx21 = getelementptr inbounds 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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; CHECK: @extr_user
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; CHECK: store <4 x i32>
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; CHECK-NEXT: extractelement <4 x i32>
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; CHECK: ret
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define i32 @extr_user(i32* noalias nocapture %B, i32* noalias nocapture %A, i32 %n, i32 %m) {
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entry:
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%0 = load 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* %A, i64 1
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%1 = load i32* %arrayidx4, align 4
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%add8 = mul i32 %1, %mul238
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%arrayidx9 = getelementptr inbounds i32* %B, i64 1
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store i32 %add8, i32* %arrayidx9, align 4
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%arrayidx10 = getelementptr inbounds i32* %A, i64 2
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%2 = load i32* %arrayidx10, align 4
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%add14 = mul i32 %2, %mul238
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%arrayidx15 = getelementptr inbounds i32* %B, i64 2
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store i32 %add14, i32* %arrayidx15, align 4
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%arrayidx16 = getelementptr inbounds i32* %A, i64 3
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%3 = load i32* %arrayidx16, align 4
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%add20 = mul i32 %3, %mul238
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%arrayidx21 = getelementptr inbounds 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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; CHECK: @extr_user1
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; CHECK: store <4 x i32>
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; CHECK-NEXT: extractelement <4 x i32>
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; CHECK: ret
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define i32 @extr_user1(i32* noalias nocapture %B, i32* noalias nocapture %A, i32 %n, i32 %m) {
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entry:
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%0 = load 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* %A, i64 1
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%1 = load i32* %arrayidx4, align 4
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%add8 = mul i32 %1, %mul238
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%arrayidx9 = getelementptr inbounds i32* %B, i64 1
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store i32 %add8, i32* %arrayidx9, align 4
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%arrayidx10 = getelementptr inbounds i32* %A, i64 2
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%2 = load i32* %arrayidx10, align 4
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%add14 = mul i32 %2, %mul238
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%arrayidx15 = getelementptr inbounds i32* %B, i64 2
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store i32 %add14, i32* %arrayidx15, align 4
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%arrayidx16 = getelementptr inbounds i32* %A, i64 3
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%3 = load i32* %arrayidx16, align 4
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%add20 = mul i32 %3, %mul238
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%arrayidx21 = getelementptr inbounds 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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