1 ; RUN: opt -O3 -S %s | FileCheck %s
4 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"
5 target triple = "x86_64-apple-macosx10.6.7"
7 declare i8* @malloc(i64)
8 declare void @free(i8*)
12 define void @test1() nounwind ssp {
13 %retval = alloca i32, align 4
14 %i = alloca i8*, align 8
15 %call = call i8* @malloc(i64 1)
16 store i8* %call, i8** %i, align 8
17 %tmp = load i8** %i, align 8
19 %tmp1 = load i8** %i, align 8
20 call void @free(i8* %tmp1)
24 ; CHECK-NEXT: ret void
28 ; PR6627 - This whole nasty sequence should be flattened down to a single
30 define void @test2(i8* %arrayidx) nounwind ssp {
32 %xx = bitcast i8* %arrayidx to i32*
33 %x1 = load i32* %xx, align 4
34 %tmp = trunc i32 %x1 to i8
35 %conv = zext i8 %tmp to i32
36 %cmp = icmp eq i32 %conv, 127
37 br i1 %cmp, label %land.lhs.true, label %if.end
39 land.lhs.true: ; preds = %entry
40 %arrayidx4 = getelementptr inbounds i8* %arrayidx, i64 1
41 %tmp5 = load i8* %arrayidx4, align 1
42 %conv6 = zext i8 %tmp5 to i32
43 %cmp7 = icmp eq i32 %conv6, 69
44 br i1 %cmp7, label %land.lhs.true9, label %if.end
46 land.lhs.true9: ; preds = %land.lhs.true
47 %arrayidx12 = getelementptr inbounds i8* %arrayidx, i64 2
48 %tmp13 = load i8* %arrayidx12, align 1
49 %conv14 = zext i8 %tmp13 to i32
50 %cmp15 = icmp eq i32 %conv14, 76
51 br i1 %cmp15, label %land.lhs.true17, label %if.end
53 land.lhs.true17: ; preds = %land.lhs.true9
54 %arrayidx20 = getelementptr inbounds i8* %arrayidx, i64 3
55 %tmp21 = load i8* %arrayidx20, align 1
56 %conv22 = zext i8 %tmp21 to i32
57 %cmp23 = icmp eq i32 %conv22, 70
58 br i1 %cmp23, label %if.then, label %if.end
60 if.then: ; preds = %land.lhs.true17
61 %call25 = call i32 (...)* @doo()
68 ; CHECK: %x1 = load i32* %xx, align 4
69 ; CHECK-NEXT: icmp eq i32 %x1, 1179403647
70 ; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end
75 ; PR6627 - This should all be flattened down to one compare. This is the same
76 ; as test2, except that the initial load is done as an i8 instead of i32, thus
78 define void @test2a(i8* %arrayidx) nounwind ssp {
80 %x1 = load i8* %arrayidx, align 4
81 %conv = zext i8 %x1 to i32
82 %cmp = icmp eq i32 %conv, 127
83 br i1 %cmp, label %land.lhs.true, label %if.end
85 land.lhs.true: ; preds = %entry
86 %arrayidx4 = getelementptr inbounds i8* %arrayidx, i64 1
87 %tmp5 = load i8* %arrayidx4, align 1
88 %conv6 = zext i8 %tmp5 to i32
89 %cmp7 = icmp eq i32 %conv6, 69
90 br i1 %cmp7, label %land.lhs.true9, label %if.end
92 land.lhs.true9: ; preds = %land.lhs.true
93 %arrayidx12 = getelementptr inbounds i8* %arrayidx, i64 2
94 %tmp13 = load i8* %arrayidx12, align 1
95 %conv14 = zext i8 %tmp13 to i32
96 %cmp15 = icmp eq i32 %conv14, 76
97 br i1 %cmp15, label %land.lhs.true17, label %if.end
99 land.lhs.true17: ; preds = %land.lhs.true9
100 %arrayidx20 = getelementptr inbounds i8* %arrayidx, i64 3
101 %tmp21 = load i8* %arrayidx20, align 1
102 %conv22 = zext i8 %tmp21 to i32
103 %cmp23 = icmp eq i32 %conv22, 70
104 br i1 %cmp23, label %if.then, label %if.end
106 if.then: ; preds = %land.lhs.true17
107 %call25 = call i32 (...)* @doo()
114 ; CHECK: %x1 = load i32* {{.*}}, align 4
115 ; CHECK-NEXT: icmp eq i32 %x1, 1179403647
116 ; CHECK-NEXT: br i1 {{.*}}, label %if.then, label %if.end