1 ; RUN: llc -O3 -mtriple arm64-apple-ios3 -aarch64-enable-gep-opt=false %s -o - | FileCheck %s
2 ; <rdar://problem/13621857>
4 @block = common global i8* null, align 8
6 define i32 @fct(i32 %i1, i32 %i2) {
8 ; Sign extension is used more than once, thus it should not be folded.
9 ; CodeGenPrepare is not sharing sext across uses, thus this is folded because
13 %idxprom = sext i32 %i1 to i64
14 %0 = load i8*, i8** @block, align 8
15 %arrayidx = getelementptr inbounds i8, i8* %0, i64 %idxprom
16 %1 = load i8, i8* %arrayidx, align 1
17 %idxprom1 = sext i32 %i2 to i64
18 %arrayidx2 = getelementptr inbounds i8, i8* %0, i64 %idxprom1
19 %2 = load i8, i8* %arrayidx2, align 1
20 %cmp = icmp eq i8 %1, %2
21 br i1 %cmp, label %if.end, label %if.then
23 if.then: ; preds = %entry
24 %cmp7 = icmp ugt i8 %1, %2
25 %conv8 = zext i1 %cmp7 to i32
28 if.end: ; preds = %entry
29 %inc = add nsw i32 %i1, 1
30 %inc9 = add nsw i32 %i2, 1
31 %idxprom10 = sext i32 %inc to i64
32 %arrayidx11 = getelementptr inbounds i8, i8* %0, i64 %idxprom10
33 %3 = load i8, i8* %arrayidx11, align 1
34 %idxprom12 = sext i32 %inc9 to i64
35 %arrayidx13 = getelementptr inbounds i8, i8* %0, i64 %idxprom12
36 %4 = load i8, i8* %arrayidx13, align 1
37 %cmp16 = icmp eq i8 %3, %4
38 br i1 %cmp16, label %if.end23, label %if.then18
40 if.then18: ; preds = %if.end
41 %cmp21 = icmp ugt i8 %3, %4
42 %conv22 = zext i1 %cmp21 to i32
45 if.end23: ; preds = %if.end
46 %inc24 = add nsw i32 %i1, 2
47 %inc25 = add nsw i32 %i2, 2
48 %idxprom26 = sext i32 %inc24 to i64
49 %arrayidx27 = getelementptr inbounds i8, i8* %0, i64 %idxprom26
50 %5 = load i8, i8* %arrayidx27, align 1
51 %idxprom28 = sext i32 %inc25 to i64
52 %arrayidx29 = getelementptr inbounds i8, i8* %0, i64 %idxprom28
53 %6 = load i8, i8* %arrayidx29, align 1
54 %cmp32 = icmp eq i8 %5, %6
55 br i1 %cmp32, label %return, label %if.then34
57 if.then34: ; preds = %if.end23
58 %cmp37 = icmp ugt i8 %5, %6
59 %conv38 = zext i1 %cmp37 to i32
62 return: ; preds = %if.end23, %if.then34, %if.then18, %if.then
63 %retval.0 = phi i32 [ %conv8, %if.then ], [ %conv22, %if.then18 ], [ %conv38, %if.then34 ], [ 1, %if.end23 ]
67 define i32 @fct1(i32 %i1, i32 %i2) optsize {
69 ; Addressing are folded when optimizing for code size.
73 %idxprom = sext i32 %i1 to i64
74 %0 = load i8*, i8** @block, align 8
75 %arrayidx = getelementptr inbounds i8, i8* %0, i64 %idxprom
76 %1 = load i8, i8* %arrayidx, align 1
77 %idxprom1 = sext i32 %i2 to i64
78 %arrayidx2 = getelementptr inbounds i8, i8* %0, i64 %idxprom1
79 %2 = load i8, i8* %arrayidx2, align 1
80 %cmp = icmp eq i8 %1, %2
81 br i1 %cmp, label %if.end, label %if.then
83 if.then: ; preds = %entry
84 %cmp7 = icmp ugt i8 %1, %2
85 %conv8 = zext i1 %cmp7 to i32
88 if.end: ; preds = %entry
89 %inc = add nsw i32 %i1, 1
90 %inc9 = add nsw i32 %i2, 1
91 %idxprom10 = sext i32 %inc to i64
92 %arrayidx11 = getelementptr inbounds i8, i8* %0, i64 %idxprom10
93 %3 = load i8, i8* %arrayidx11, align 1
94 %idxprom12 = sext i32 %inc9 to i64
95 %arrayidx13 = getelementptr inbounds i8, i8* %0, i64 %idxprom12
96 %4 = load i8, i8* %arrayidx13, align 1
97 %cmp16 = icmp eq i8 %3, %4
98 br i1 %cmp16, label %if.end23, label %if.then18
100 if.then18: ; preds = %if.end
101 %cmp21 = icmp ugt i8 %3, %4
102 %conv22 = zext i1 %cmp21 to i32
105 if.end23: ; preds = %if.end
106 %inc24 = add nsw i32 %i1, 2
107 %inc25 = add nsw i32 %i2, 2
108 %idxprom26 = sext i32 %inc24 to i64
109 %arrayidx27 = getelementptr inbounds i8, i8* %0, i64 %idxprom26
110 %5 = load i8, i8* %arrayidx27, align 1
111 %idxprom28 = sext i32 %inc25 to i64
112 %arrayidx29 = getelementptr inbounds i8, i8* %0, i64 %idxprom28
113 %6 = load i8, i8* %arrayidx29, align 1
114 %cmp32 = icmp eq i8 %5, %6
115 br i1 %cmp32, label %return, label %if.then34
117 if.then34: ; preds = %if.end23
118 %cmp37 = icmp ugt i8 %5, %6
119 %conv38 = zext i1 %cmp37 to i32
122 return: ; preds = %if.end23, %if.then34, %if.then18, %if.then
123 %retval.0 = phi i32 [ %conv8, %if.then ], [ %conv22, %if.then18 ], [ %conv38, %if.then34 ], [ 1, %if.end23 ]
128 ; CHECK-NOT: , uxtw #2]
129 define i32 @test(i32* %array, i8 zeroext %c, i32 %arg) {
131 %conv = zext i8 %c to i32
132 %add = sub i32 0, %arg
133 %tobool = icmp eq i32 %conv, %add
134 br i1 %tobool, label %if.end, label %if.then
136 if.then: ; preds = %entry
137 %idxprom = zext i8 %c to i64
138 %arrayidx = getelementptr inbounds i32, i32* %array, i64 %idxprom
139 %0 = load volatile i32, i32* %arrayidx, align 4
140 %1 = load volatile i32, i32* %arrayidx, align 4
141 %add3 = add nsw i32 %1, %0
144 if.end: ; preds = %entry, %if.then
145 %res.0 = phi i32 [ %add3, %if.then ], [ 0, %entry ]
153 define i32 @test2(i32* %array, i8 zeroext %c, i32 %arg) optsize {
155 %conv = zext i8 %c to i32
156 %add = sub i32 0, %arg
157 %tobool = icmp eq i32 %conv, %add
158 br i1 %tobool, label %if.end, label %if.then
160 if.then: ; preds = %entry
161 %idxprom = zext i8 %c to i64
162 %arrayidx = getelementptr inbounds i32, i32* %array, i64 %idxprom
163 %0 = load volatile i32, i32* %arrayidx, align 4
164 %1 = load volatile i32, i32* %arrayidx, align 4
165 %add3 = add nsw i32 %1, %0
168 if.end: ; preds = %entry, %if.then
169 %res.0 = phi i32 [ %add3, %if.then ], [ 0, %entry ]