1 ; RUN: opt -O3 -S %s | 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"
4 target triple = "x86_64-apple-macosx10.6.7"
6 declare i8* @malloc(i64)
7 declare void @free(i8*)
11 define void @test1() nounwind ssp {
12 %retval = alloca i32, align 4
13 %i = alloca i8*, align 8
14 %call = call i8* @malloc(i64 1)
15 store i8* %call, i8** %i, align 8
16 %tmp = load i8** %i, align 8
18 %tmp1 = load i8** %i, align 8
19 call void @free(i8* %tmp1)
23 ; CHECK-NEXT: ret void
27 ; PR6627 - This whole nasty sequence should be flattened down to a single
29 define void @test2(i8* %arrayidx) nounwind ssp {
31 %xx = bitcast i8* %arrayidx to i32*
32 %x1 = load i32* %xx, align 4
33 %tmp = trunc i32 %x1 to i8
34 %conv = zext i8 %tmp to i32
35 %cmp = icmp eq i32 %conv, 127
36 br i1 %cmp, label %land.lhs.true, label %if.end
38 land.lhs.true: ; preds = %entry
39 %arrayidx4 = getelementptr inbounds i8* %arrayidx, i64 1
40 %tmp5 = load i8* %arrayidx4, align 1
41 %conv6 = zext i8 %tmp5 to i32
42 %cmp7 = icmp eq i32 %conv6, 69
43 br i1 %cmp7, label %land.lhs.true9, label %if.end
45 land.lhs.true9: ; preds = %land.lhs.true
46 %arrayidx12 = getelementptr inbounds i8* %arrayidx, i64 2
47 %tmp13 = load i8* %arrayidx12, align 1
48 %conv14 = zext i8 %tmp13 to i32
49 %cmp15 = icmp eq i32 %conv14, 76
50 br i1 %cmp15, label %land.lhs.true17, label %if.end
52 land.lhs.true17: ; preds = %land.lhs.true9
53 %arrayidx20 = getelementptr inbounds i8* %arrayidx, i64 3
54 %tmp21 = load i8* %arrayidx20, align 1
55 %conv22 = zext i8 %tmp21 to i32
56 %cmp23 = icmp eq i32 %conv22, 70
57 br i1 %cmp23, label %if.then, label %if.end
59 if.then: ; preds = %land.lhs.true17
60 %call25 = call i32 (...)* @doo()
67 ; CHECK: %x1 = load i32* %xx, align 4
68 ; CHECK-NEXT: icmp eq i32 %x1, 1179403647
69 ; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end
74 ; PR6627 - This should all be flattened down to one compare. This is the same
75 ; as test2, except that the initial load is done as an i8 instead of i32, thus
77 define void @test2a(i8* %arrayidx) nounwind ssp {
79 %x1 = load i8* %arrayidx, align 4
80 %conv = zext i8 %x1 to i32
81 %cmp = icmp eq i32 %conv, 127
82 br i1 %cmp, label %land.lhs.true, label %if.end
84 land.lhs.true: ; preds = %entry
85 %arrayidx4 = getelementptr inbounds i8* %arrayidx, i64 1
86 %tmp5 = load i8* %arrayidx4, align 1
87 %conv6 = zext i8 %tmp5 to i32
88 %cmp7 = icmp eq i32 %conv6, 69
89 br i1 %cmp7, label %land.lhs.true9, label %if.end
91 land.lhs.true9: ; preds = %land.lhs.true
92 %arrayidx12 = getelementptr inbounds i8* %arrayidx, i64 2
93 %tmp13 = load i8* %arrayidx12, align 1
94 %conv14 = zext i8 %tmp13 to i32
95 %cmp15 = icmp eq i32 %conv14, 76
96 br i1 %cmp15, label %land.lhs.true17, label %if.end
98 land.lhs.true17: ; preds = %land.lhs.true9
99 %arrayidx20 = getelementptr inbounds i8* %arrayidx, i64 3
100 %tmp21 = load i8* %arrayidx20, align 1
101 %conv22 = zext i8 %tmp21 to i32
102 %cmp23 = icmp eq i32 %conv22, 70
103 br i1 %cmp23, label %if.then, label %if.end
105 if.then: ; preds = %land.lhs.true17
106 %call25 = call i32 (...)* @doo()
113 ; CHECK: %x1 = load i32* {{.*}}, align 4
114 ; CHECK-NEXT: icmp eq i32 %x1, 1179403647
115 ; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end