mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-21 06:30:16 +00:00
53a0552b06
Rewrote the SLP-vectorization as a whole-function vectorization pass. It is now able to vectorize chains across multiple basic blocks. It still does not vectorize PHIs, but this should be easy to do now that we scan the entire function. I removed the support for extracting values from trees. We are now able to vectorize more programs, but there are some serious regressions in many workloads (such as flops-6 and mandel-2). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184647 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: load i32*
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; CHECK: store <4 x i32>
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; CHECK-NEXT: 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: load i32*
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; CHECK: store <4 x i32>
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; CHECK-NEXT: 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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