1 ; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
3 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"
4 target triple = "x86_64-apple-macosx10.8.0"
6 ; double foo(double * restrict b, double * restrict a, int n, int m) {
10 ; for (int i=0; i < 100; i++) {
15 ; x = g; <----- external user!
22 ; return x; <-- must extract here!
26 ;CHECK: phi <2 x double>
27 ;CHECK: fadd <2 x double>
28 ;CHECK: fmul <2 x double>
30 ;CHECK: store <2 x double>
31 ;CHECK: extractelement <2 x double>
34 define double @ext_user(double* noalias nocapture %B, double* noalias nocapture %A, i32 %n, i32 %m) {
36 %arrayidx = getelementptr inbounds double, double* %A, i64 1
37 %0 = load double* %arrayidx, align 8
38 %1 = load double* %A, align 8
41 for.body: ; preds = %for.body, %entry
42 %i.020 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
43 %G.019 = phi double [ %1, %entry ], [ %add5, %for.body ]
44 %R.018 = phi double [ %0, %entry ], [ %add4, %for.body ]
45 %add = fadd double %R.018, 1.000000e+01
46 %add2 = fadd double %G.019, 1.000000e+01
47 %mul = fmul double %add, 4.000000e+00
48 %mul3 = fmul double %add2, 4.000000e+00
49 %add4 = fadd double %mul, 4.000000e+00
50 %add5 = fadd double %mul3, 4.000000e+00
51 %inc = add nsw i32 %i.020, 1
52 %exitcond = icmp eq i32 %inc, 100
53 br i1 %exitcond, label %for.end, label %for.body
55 for.end: ; preds = %for.body
56 store double %add5, double* %B, align 8
57 %arrayidx7 = getelementptr inbounds double, double* %B, i64 1
58 store double %add4, double* %arrayidx7, align 8
62 ; A need-to-gather entry cannot be an external use of the scalar element.
63 ; Instead the insertelement instructions of the need-to-gather entry are the
65 ; This test would assert because we would keep the scalar fpext and fadd alive.
68 ; CHECK-LABEL: needtogather
69 define i32 @needtogather(double *noalias %a, i32 *noalias %b, float * noalias %c,
72 %0 = load i32* %d, align 4
73 %conv = sitofp i32 %0 to float
75 %sub = fsub float 0.000000e+00, %1
76 %mul = fmul float %sub, 0.000000e+00
77 %add = fadd float %conv, %mul
78 %conv1 = fpext float %add to double
79 %sub3 = fsub float 1.000000e+00, %1
80 %mul4 = fmul float %sub3, 0.000000e+00
81 %add5 = fadd float %conv, %mul4
82 %conv6 = fpext float %add5 to double
83 %tobool = fcmp une float %add, 0.000000e+00
84 br i1 %tobool, label %if.then, label %if.end
90 %storemerge = phi double [ %conv6, %if.then ], [ %conv1, %entry ]
91 %e.0 = phi double [ %conv1, %if.then ], [ %conv6, %entry ]
92 store double %storemerge, double* %a, align 8
93 %conv7 = fptosi double %e.0 to i32
94 store i32 %conv7, i32* %b, align 4