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