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62 lines
1.9 KiB
LLVM
62 lines
1.9 KiB
LLVM
; RUN: opt < %s -basicaa -slp-vectorizer -dce -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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; double foo(double * restrict b, double * restrict a, int n, int m) {
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; double r=a[1];
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; double g=a[0];
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; double x;
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; for (int i=0; i < 100; i++) {
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; r += 10;
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; g += 10;
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; r *= 4;
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; g *= 4;
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; x = g; <----- external user!
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; r += 4;
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; g += 4;
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; }
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; b[0] = g;
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; b[1] = r;
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;
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; return x; <-- must extract here!
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; }
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;CHECK: ext_user
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;CHECK: phi <2 x double>
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;CHECK: fadd <2 x double>
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;CHECK: fmul <2 x double>
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;CHECK: br
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;CHECK: store <2 x double>
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;CHECK: extractelement <2 x double>
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;CHECK: ret double
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define double @ext_user(double* noalias nocapture %B, double* noalias nocapture %A, i32 %n, i32 %m) {
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entry:
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%arrayidx = getelementptr inbounds double* %A, i64 1
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%0 = load double* %arrayidx, align 8
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%1 = load double* %A, align 8
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.020 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%G.019 = phi double [ %1, %entry ], [ %add5, %for.body ]
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%R.018 = phi double [ %0, %entry ], [ %add4, %for.body ]
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%add = fadd double %R.018, 1.000000e+01
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%add2 = fadd double %G.019, 1.000000e+01
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%mul = fmul double %add, 4.000000e+00
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%mul3 = fmul double %add2, 4.000000e+00
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%add4 = fadd double %mul, 4.000000e+00
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%add5 = fadd double %mul3, 4.000000e+00
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%inc = add nsw i32 %i.020, 1
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%exitcond = icmp eq i32 %inc, 100
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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store double %add5, double* %B, align 8
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%arrayidx7 = getelementptr inbounds double* %B, i64 1
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store double %add4, double* %arrayidx7, align 8
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ret double %mul3
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}
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