2 ; RUN: opt -gvn-hoist -S < %s | FileCheck %s
3 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
4 target triple = "x86_64-pc_linux"
6 ; Function Attrs: nounwind uwtable
7 define float* @foo(i32* noalias nocapture readonly %in, float* noalias %out, i32 %size, i32* nocapture readonly %trigger) {
9 %cmp11 = icmp eq i32 %size, 0
10 br i1 %cmp11, label %for.end, label %for.body.lr.ph
12 for.body.lr.ph: ; preds = %entry
13 %0 = add i32 %size, -1
16 ; CHECK-LABEL: for.body
18 ; CHECK: %2 = getelementptr inbounds i32, i32* %in, i64 %indvars.iv
19 ; CHECK: %3 = load i32, i32* %2, align 4
21 for.body: ; preds = %for.body.lr.ph, %for.inc
22 %indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.inc ]
23 %arrayidx = getelementptr inbounds i32, i32* %trigger, i64 %indvars.iv
24 %1 = load i32, i32* %arrayidx, align 4
25 %cmp1 = icmp sgt i32 %1, 0
26 br i1 %cmp1, label %if.then, label %if.else
28 ; CHECK-LABEL: if.then
29 if.then: ; preds = %for.body
30 ; This load should be hoisted
31 %arrayidx3 = getelementptr inbounds i32, i32* %in, i64 %indvars.iv
32 %2 = load i32, i32* %arrayidx3, align 4
33 %conv = sitofp i32 %2 to float
34 %add = fadd float %conv, 5.000000e-01
35 %arrayidx5 = getelementptr inbounds float, float* %out, i64 %indvars.iv
36 store float %add, float* %arrayidx5, align 4
39 if.else: ; preds = %for.body
40 %arrayidx7 = getelementptr inbounds float, float* %out, i64 %indvars.iv
41 %3 = load float, float* %arrayidx7, align 4
42 %div = fdiv float %3, 3.000000e+00
43 store float %div, float* %arrayidx7, align 4
44 ; This load should be hoisted in spite of store
45 %arrayidx9 = getelementptr inbounds i32, i32* %in, i64 %indvars.iv
46 %4 = load i32, i32* %arrayidx9, align 4
47 %conv10 = sitofp i32 %4 to float
48 %add13 = fadd float %div, %conv10
49 store float %add13, float* %arrayidx7, align 4
52 for.inc: ; preds = %if.then, %if.else
53 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
54 %lftr.wideiv = trunc i64 %indvars.iv to i32
55 %exitcond = icmp ne i32 %lftr.wideiv, %0
56 br i1 %exitcond, label %for.body, label %for.cond.for.end_crit_edge
58 for.cond.for.end_crit_edge: ; preds = %for.inc
61 for.end: ; preds = %entry, %for.cond.for.end_crit_edge