| Taewook Oh | 505a25a | 2017-01-28 07:05:43 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -simplifycfg -S | FileCheck %s |
| 2 | |
| 3 | ; Check if the debug info for hoisted store for "ret = 0" is removed |
| 4 | ; |
| 5 | ; int foo(int x) { |
| 6 | ; int ret = 1; |
| 7 | ; if (x) |
| 8 | ; ret = 0; |
| 9 | ; return ret; |
| 10 | ; } |
| 11 | ; |
| 12 | ; CHECK: store i32 1,{{.+}}!dbg ![[DLOC1:[0-9]+]] |
| 13 | ; CHECK: icmp ne {{.+}}!dbg ![[DLOC2:[0-9]+]] |
| 14 | ; CHECK: [[VREG:%[^ ]+]] = select |
| 15 | ; CHECK: store i32 [[VREG]] |
| 16 | ; CHECK-NOT: !dbg |
| 17 | ; CHECK-SAME: {{$}} |
| 18 | ; CHECK: ret {{.+}}!dbg ![[DLOC3:[0-9]+]] |
| 19 | ; CHECK: ![[DLOC1]] = !DILocation(line: 2 |
| 20 | ; CHECK: ![[DLOC2]] = !DILocation(line: 3 |
| 21 | ; CHECK: ![[DLOC3]] = !DILocation(line: 5 |
| 22 | |
| 23 | target triple = "x86_64-unknown-linux-gnu" |
| 24 | |
| 25 | ; Function Attrs: noinline nounwind uwtable |
| 26 | define i32 @foo(i32) !dbg !6 { |
| 27 | %2 = alloca i32, align 4 |
| 28 | %3 = alloca i32, align 4 |
| 29 | store i32 %0, i32* %2, align 4 |
| 30 | store i32 1, i32* %3, align 4, !dbg !14 |
| 31 | %4 = load i32, i32* %2, align 4, !dbg !15 |
| 32 | %5 = icmp ne i32 %4, 0, !dbg !15 |
| 33 | br i1 %5, label %6, label %7, !dbg !17 |
| 34 | |
| 35 | ; <label>:6: ; preds = %1 |
| 36 | store i32 0, i32* %3, align 4, !dbg !18 |
| 37 | br label %7, !dbg !19 |
| 38 | |
| 39 | ; <label>:7: ; preds = %6, %1 |
| 40 | %8 = load i32, i32* %3, align 4, !dbg !20 |
| 41 | ret i32 %8, !dbg !21 |
| 42 | } |
| 43 | |
| 44 | !llvm.dbg.cu = !{!0} |
| 45 | !llvm.module.flags = !{!3, !4} |
| 46 | |
| 47 | !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1) |
| 48 | !1 = !DIFile(filename: "foo.c", directory: "b/") |
| 49 | !2 = !{} |
| 50 | !3 = !{i32 2, !"Dwarf Version", i32 4} |
| 51 | !4 = !{i32 2, !"Debug Info Version", i32 3} |
| 52 | !5 = !{} |
| 53 | !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2) |
| 54 | !7 = !DISubroutineType(types: !8) |
| 55 | !8 = !{!9, !9} |
| 56 | !9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| 57 | !10 = !DILocalVariable(name: "x", arg: 1, scope: !6, file: !1, line: 1, type: !9) |
| 58 | !11 = !DIExpression() |
| 59 | !12 = !DILocation(line: 1, column: 13, scope: !6) |
| 60 | !13 = !DILocalVariable(name: "ret", scope: !6, file: !1, line: 2, type: !9) |
| 61 | !14 = !DILocation(line: 2, column: 7, scope: !6) |
| 62 | !15 = !DILocation(line: 3, column: 7, scope: !16) |
| 63 | !16 = distinct !DILexicalBlock(scope: !6, file: !1, line: 3, column: 7) |
| 64 | !17 = !DILocation(line: 3, column: 7, scope: !6) |
| 65 | !18 = !DILocation(line: 4, column: 9, scope: !16) |
| 66 | !19 = !DILocation(line: 4, column: 5, scope: !16) |
| 67 | !20 = !DILocation(line: 5, column: 10, scope: !6) |
| 68 | !21 = !DILocation(line: 5, column: 3, scope: !6) |