1; RUN: opt -S -passes=newgvn < %s | FileCheck %s
2; PR13694
3
4target 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"
5target triple = "x86_64-apple-macosx10.8.0"
6
7declare i8* @malloc(i64) nounwind allockind("alloc,uninitialized") allocsize(0) "alloc-family"="malloc"
8
9define noalias i8* @test1() nounwind uwtable ssp {
10entry:
11  %call = tail call i8* @malloc(i64 100) nounwind
12  %0 = load i8, i8* %call, align 1
13  %tobool = icmp eq i8 %0, 0
14  br i1 %tobool, label %if.end, label %if.then
15
16if.then:                                          ; preds = %entry
17  store i8 0, i8* %call, align 1
18  br label %if.end
19
20if.end:                                           ; preds = %if.then, %entry
21  ret i8* %call
22
23; CHECK-LABEL: @test1(
24; CHECK-NOT: load
25; CHECK-NOT: icmp
26}
27
28declare i8* @_Znwm(i64) nounwind
29
30define noalias i8* @test2() nounwind uwtable ssp {
31entry:
32  %call = tail call i8* @_Znwm(i64 100) nounwind
33  %0 = load i8, i8* %call, align 1
34  %tobool = icmp eq i8 %0, 0
35  br i1 %tobool, label %if.end, label %if.then
36
37if.then:                                          ; preds = %entry
38  store i8 0, i8* %call, align 1
39  br label %if.end
40
41if.end:                                           ; preds = %if.then, %entry
42  ret i8* %call
43
44; CHECK-LABEL: @test2(
45; CHECK-NOT: load
46; CHECK-NOT: icmp
47}
48
49declare i8* @aligned_alloc(i64 allocalign, i64) nounwind allockind("alloc,uninitialized,aligned") allocsize(1) "alloc-family"="malloc"
50
51define noalias i8* @test3() nounwind uwtable ssp {
52entry:
53  %call = tail call i8* @aligned_alloc(i64 256, i64 32) nounwind
54  %0 = load i8, i8* %call, align 32
55  %tobool = icmp eq i8 %0, 0
56  br i1 %tobool, label %if.end, label %if.then
57
58if.then:                                          ; preds = %entry
59  store i8 0, i8* %call, align 1
60  br label %if.end
61
62if.end:                                           ; preds = %if.then, %entry
63  ret i8* %call
64
65; CHECK-LABEL: @test3(
66; CHECK-NOT: load
67; CHECK-NOT: icmp
68}
69