forked from OSchip/llvm-project
77 lines
2.6 KiB
LLVM
77 lines
2.6 KiB
LLVM
; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=i386-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
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target triple = "i386-apple-macosx10.9.0"
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; We disable the vectorization of <3 x float> for now
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; float foo(float *A) {
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;
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; float R = A[0];
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; float G = A[1];
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; float B = A[2];
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; for (int i=0; i < 121; i+=3) {
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; R+=A[i+0]*7;
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; G+=A[i+1]*8;
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; B+=A[i+2]*9;
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; }
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;
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; return R+G+B;
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; }
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;CHECK-LABEL: @foo(
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;CHECK: br
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;CHECK-NOT: phi <3 x float>
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;CHECK-NOT: fmul <3 x float>
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;CHECK-NOT: fadd <3 x float>
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; At the moment we don't sink extractelements.
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;CHECK: br
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;CHECK-NOT: extractelement
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;CHECK-NOT: extractelement
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;CHECK-NOT: extractelement
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;CHECK: ret
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define float @foo(float* nocapture readonly %A) {
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entry:
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%0 = load float* %A, align 4
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%arrayidx1 = getelementptr inbounds float* %A, i64 1
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%1 = load float* %arrayidx1, align 4
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%arrayidx2 = getelementptr inbounds float* %A, i64 2
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%2 = load float* %arrayidx2, align 4
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br label %for.body
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for.body: ; preds = %for.body.for.body_crit_edge, %entry
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%3 = phi float [ %0, %entry ], [ %.pre, %for.body.for.body_crit_edge ]
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body.for.body_crit_edge ]
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%B.032 = phi float [ %2, %entry ], [ %add14, %for.body.for.body_crit_edge ]
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%G.031 = phi float [ %1, %entry ], [ %add9, %for.body.for.body_crit_edge ]
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%R.030 = phi float [ %0, %entry ], [ %add4, %for.body.for.body_crit_edge ]
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%mul = fmul float %3, 7.000000e+00
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%add4 = fadd float %R.030, %mul
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%4 = add nsw i64 %indvars.iv, 1
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%arrayidx7 = getelementptr inbounds float* %A, i64 %4
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%5 = load float* %arrayidx7, align 4
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%mul8 = fmul float %5, 8.000000e+00
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%add9 = fadd float %G.031, %mul8
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%6 = add nsw i64 %indvars.iv, 2
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%arrayidx12 = getelementptr inbounds float* %A, i64 %6
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%7 = load float* %arrayidx12, align 4
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%mul13 = fmul float %7, 9.000000e+00
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%add14 = fadd float %B.032, %mul13
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%indvars.iv.next = add i64 %indvars.iv, 3
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%8 = trunc i64 %indvars.iv.next to i32
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%cmp = icmp slt i32 %8, 121
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br i1 %cmp, label %for.body.for.body_crit_edge, label %for.end
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for.body.for.body_crit_edge: ; preds = %for.body
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%arrayidx3.phi.trans.insert = getelementptr inbounds float* %A, i64 %indvars.iv.next
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%.pre = load float* %arrayidx3.phi.trans.insert, align 4
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br label %for.body
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for.end: ; preds = %for.body
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%add16 = fadd float %add4, %add9
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%add17 = fadd float %add16, %add14
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ret float %add17
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}
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