1 ; RUN: llc -stop-after=branch-folder < %s | FileCheck %s 2 ; 3 ; bb2 and bb3 in the IR below will be tail-merged into a single basic block. 4 ; As br instructions in bb2 and bb3 have the same debug location, make sure that 5 ; the branch instruction in the merged basic block still maintains the debug 6 ; location info. 7 ; 8 ; CHECK: [[DLOC:![0-9]+]] = !DILocation(line: 2, column: 2, scope: !{{[0-9]+}}) 9 ; CHECK: TEST64rr{{.*}}$rsi, renamable $rsi, implicit-def $eflags 10 ; CHECK-NEXT: JNE_1{{.*}}, debug-location [[DLOC]] 11 12 target triple = "x86_64-unknown-linux-gnu" 13 14 define i32 @foo(i1 %b, i8* %p) { 15 bb1: 16 br i1 %b, label %bb2, label %bb3 17 18 bb2: 19 %a1 = icmp eq i8* %p, null 20 br i1 %a1, label %bb4, label %bb5, !dbg !6 21 22 bb3: 23 %a2 = icmp eq i8* %p, null 24 br i1 %a2, label %bb4, label %bb5, !dbg !6 25 26 bb4: 27 ret i32 1 28 29 bb5: 30 ret i32 0 31 } 32 33 !llvm.dbg.cu = !{!0} 34 !llvm.module.flags = !{!2, !3} 35 36 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1) 37 !1 = !DIFile(filename: "foo.c", directory: "b/") 38 !2 = !{i32 2, !"Dwarf Version", i32 4} 39 !3 = !{i32 2, !"Debug Info Version", i32 3} 40 !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0) 41 !5 = distinct !DILexicalBlock(scope: !4, file: !1, line: 1, column: 1) 42 !6 = !DILocation(line: 2, column: 2, scope: !5) 43
