1; RUN: opt < %s -add-discriminators -S | FileCheck %s
2
3; Test that the only instructions that receive a new discriminator in
4; the block 'if.then' are those that share the same line number as
5; the branch in 'entry'.
6;
7; Original code:
8;
9;       void foo(int i) {
10;         int x, y;
11;         if (i < 10) { x = i;
12;             y = -i;
13;         }
14;       }
15
16define void @foo(i32 %i) #0 {
17entry:
18  %i.addr = alloca i32, align 4
19  %x = alloca i32, align 4
20  %y = alloca i32, align 4
21  store i32 %i, i32* %i.addr, align 4
22  %0 = load i32* %i.addr, align 4, !dbg !10
23  %cmp = icmp slt i32 %0, 10, !dbg !10
24  br i1 %cmp, label %if.then, label %if.end, !dbg !10
25
26if.then:                                          ; preds = %entry
27  %1 = load i32* %i.addr, align 4, !dbg !12
28  store i32 %1, i32* %x, align 4, !dbg !12
29
30  %2 = load i32* %i.addr, align 4, !dbg !14
31; CHECK:  %2 = load i32* %i.addr, align 4, !dbg !15
32
33  %sub = sub nsw i32 0, %2, !dbg !14
34; CHECK:  %sub = sub nsw i32 0, %2, !dbg !15
35
36  store i32 %sub, i32* %y, align 4, !dbg !14
37; CHECK:  store i32 %sub, i32* %y, align 4, !dbg !15
38
39  br label %if.end, !dbg !15
40; CHECK:  br label %if.end, !dbg !16
41
42if.end:                                           ; preds = %if.then, %entry
43  ret void, !dbg !16
44; CHECK:  ret void, !dbg !17
45}
46
47attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
48
49!llvm.dbg.cu = !{!0}
50!llvm.module.flags = !{!7, !8}
51!llvm.ident = !{!9}
52
53!0 = !{!"0x11\0012\00clang version 3.5 (trunk 199750) (llvm/trunk 199751)\000\00\000\00\000", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [first-only.c] [DW_LANG_C99]
54!1 = !{!"first-only.c", !"."}
55!2 = !{i32 0}
56!3 = !{!4}
57!4 = !{!"0x2e\00foo\00foo\00\001\000\001\000\006\00256\000\001", !1, !5, !6, null, void (i32)* @foo, null, null, !2} ; [ DW_TAG_subprogram ] [line 1] [def] [foo]
58!5 = !{!"0x29", !1}          ; [ DW_TAG_file_type ] [first-only.c]
59!6 = !{!"0x15\00\000\000\000\000\000\000", i32 0, null, null, !2, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
60!7 = !{i32 2, !"Dwarf Version", i32 4}
61!8 = !{i32 1, !"Debug Info Version", i32 2}
62!9 = !{!"clang version 3.5 (trunk 199750) (llvm/trunk 199751)"}
63!10 = !MDLocation(line: 3, scope: !11)
64
65!11 = !{!"0xb\003\000\000", !1, !4} ; [ DW_TAG_lexical_block ] [first-only.c]
66; CHECK: !11 = !{!"0xb\003\000\000", !1, !4}
67
68!12 = !MDLocation(line: 3, scope: !13)
69
70!13 = !{!"0xb\003\000\001", !1, !11} ; [ DW_TAG_lexical_block ] [first-only.c]
71; CHECK: !13 = !{!"0xb\001", !1, !14} ; [ DW_TAG_lexical_block ] [./first-only.c]
72
73!14 = !MDLocation(line: 4, scope: !13)
74; CHECK: !14 = !{!"0xb\003\000\001", !1, !11}
75
76!15 = !MDLocation(line: 5, scope: !13)
77; CHECK: !15 = !MDLocation(line: 4, scope: !14)
78
79!16 = !MDLocation(line: 6, scope: !4)
80; CHECK: !16 = !MDLocation(line: 5, scope: !14)
81; CHECK: !17 = !MDLocation(line: 6, scope: !4)
82
83