1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -basic-aa -newgvn -S | FileCheck %s
3 target datalayout = "E-m:e-i64:64-n32:64"
5 @global = external hidden unnamed_addr constant [11 x i8], align 1
6 ;; Ensure we do not believe the indexing increments are unreachable due to incorrect memory
7 ;; equivalence detection. In PR31483, we were deleting those blocks as unreachable
8 ; Function Attrs: nounwind
9 define signext i32 @ham(i8* %arg, i8* %arg1) #0 {
12 ; CHECK-NEXT: [[TMP:%.*]] = alloca i8*, align 8
13 ; CHECK-NEXT: store i8* %arg1, i8** [[TMP]], align 8
14 ; CHECK-NEXT: br label %bb2
16 ; CHECK-NEXT: [[TMP3:%.*]] = phi i8* [ %arg, %bb ], [ %tmp7, %bb22 ]
17 ; CHECK-NEXT: [[TMP4:%.*]] = load i8, i8* [[TMP3]], align 1
18 ; CHECK-NEXT: [[TMP5:%.*]] = icmp ne i8 [[TMP4]], 0
19 ; CHECK-NEXT: br i1 [[TMP5]], label %bb6, label %bb23
21 ; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8, i8* [[TMP3]], i32 1
22 ; CHECK-NEXT: [[TMP9:%.*]] = zext i8 [[TMP4]] to i32
23 ; CHECK-NEXT: switch i32 [[TMP9]], label %bb22 [
24 ; CHECK-NEXT: i32 115, label %bb10
25 ; CHECK-NEXT: i32 105, label %bb16
26 ; CHECK-NEXT: i32 99, label %bb16
29 ; CHECK-NEXT: [[TMP11:%.*]] = load i8*, i8** [[TMP]], align 8
30 ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i8, i8* [[TMP11]], i64 8
31 ; CHECK-NEXT: store i8* [[TMP12]], i8** [[TMP]], align 8
32 ; CHECK-NEXT: [[TMP13:%.*]] = bitcast i8* [[TMP11]] to i8**
33 ; CHECK-NEXT: [[TMP14:%.*]] = load i8*, i8** [[TMP13]], align 8
34 ; CHECK-NEXT: [[TMP15:%.*]] = call signext i32 (i8*, ...) @zot(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @global, i32 0, i32 0), i8* [[TMP14]])
35 ; CHECK-NEXT: br label %bb22
37 ; CHECK-NEXT: [[TMP17:%.*]] = load i8*, i8** [[TMP]], align 8
38 ; CHECK-NEXT: [[TMP18:%.*]] = getelementptr inbounds i8, i8* [[TMP17]], i64 8
39 ; CHECK-NEXT: store i8* [[TMP18]], i8** [[TMP]], align 8
40 ; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds i8, i8* [[TMP17]], i64 4
41 ; CHECK-NEXT: [[TMP20:%.*]] = bitcast i8* [[TMP19]] to i32*
42 ; CHECK-NEXT: br label %bb22
44 ; CHECK-NEXT: br label %bb2
46 ; CHECK-NEXT: [[TMP24:%.*]] = bitcast i8** [[TMP]] to i8*
47 ; CHECK-NEXT: call void @llvm.va_end(i8* [[TMP24]])
48 ; CHECK-NEXT: ret i32 undef
51 %tmp = alloca i8*, align 8
52 store i8* %arg1, i8** %tmp, align 8
55 bb2: ; preds = %bb22, %bb
56 %tmp3 = phi i8* [ %arg, %bb ], [ %tmp7, %bb22 ]
57 %tmp4 = load i8, i8* %tmp3, align 1
58 %tmp5 = icmp ne i8 %tmp4, 0
59 br i1 %tmp5, label %bb6, label %bb23
62 %tmp7 = getelementptr inbounds i8, i8* %tmp3, i32 1
63 %tmp8 = load i8, i8* %tmp3, align 1
64 %tmp9 = zext i8 %tmp8 to i32
65 switch i32 %tmp9, label %bb22 [
72 %tmp11 = load i8*, i8** %tmp, align 8
73 %tmp12 = getelementptr inbounds i8, i8* %tmp11, i64 8
74 store i8* %tmp12, i8** %tmp, align 8
75 %tmp13 = bitcast i8* %tmp11 to i8**
76 %tmp14 = load i8*, i8** %tmp13, align 8
77 %tmp15 = call signext i32 (i8*, ...) @zot(i8* getelementptr inbounds ([11 x i8], [11 x i8]* @global, i32 0, i32 0), i8* %tmp14)
80 bb16: ; preds = %bb6, %bb6
81 %tmp17 = load i8*, i8** %tmp, align 8
82 %tmp18 = getelementptr inbounds i8, i8* %tmp17, i64 8
83 store i8* %tmp18, i8** %tmp, align 8
84 %tmp19 = getelementptr inbounds i8, i8* %tmp17, i64 4
85 %tmp20 = bitcast i8* %tmp19 to i32*
86 %tmp21 = load i32, i32* %tmp20, align 4
89 bb22: ; preds = %bb16, %bb10, %bb6
93 %tmp24 = bitcast i8** %tmp to i8*
94 call void @llvm.va_end(i8* %tmp24)
98 declare signext i32 @zot(i8*, ...) #1
100 ; Function Attrs: nounwind
101 declare void @llvm.va_end(i8*) #2
103 attributes #0 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="ppc64" "target-features"="+altivec,-bpermd,-crypto,-direct-move,-extdiv,-power8-vector,-vsx" "unsafe-fp-math"="false" "use-soft-float"="false" }
104 attributes #1 = { "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="ppc64" "target-features"="+altivec,-bpermd,-crypto,-direct-move,-extdiv,-power8-vector,-vsx" "unsafe-fp-math"="false" "use-soft-float"="false" }
105 attributes #2 = { nounwind }