| ; RUN: llc -stop-after=branch-folder < %s | FileCheck %s |
| ; |
| ; bb2 and bb3 in the IR below will be tail-merged into a single basic block. |
| ; As br instructions in bb2 and bb3 have the same debug location, make sure that |
| ; the branch instruction in the merged basic block still maintains the debug |
| ; location info. |
| ; |
| ; CHECK: [[DLOC:![0-9]+]] = !DILocation(line: 2, column: 2, scope: !{{[0-9]+}}) |
| ; CHECK: TEST64rr{{.*}}$rsi, renamable $rsi, implicit-def $eflags |
| ; CHECK-NEXT: JNE_1{{.*}}, debug-location [[DLOC]] |
| |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define i32 @foo(i1 %b, i8* %p) { |
| bb1: |
| br i1 %b, label %bb2, label %bb3 |
| |
| bb2: |
| %a1 = icmp eq i8* %p, null |
| br i1 %a1, label %bb4, label %bb5, !dbg !6 |
| |
| bb3: |
| %a2 = icmp eq i8* %p, null |
| br i1 %a2, label %bb4, label %bb5, !dbg !6 |
| |
| bb4: |
| ret i32 1 |
| |
| bb5: |
| ret i32 0 |
| } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!2, !3} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1) |
| !1 = !DIFile(filename: "foo.c", directory: "b/") |
| !2 = !{i32 2, !"Dwarf Version", i32 4} |
| !3 = !{i32 2, !"Debug Info Version", i32 3} |
| !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0) |
| !5 = distinct !DILexicalBlock(scope: !4, file: !1, line: 1, column: 1) |
| !6 = !DILocation(line: 2, column: 2, scope: !5) |
