792a6f8119
These date back to when the non-intrinsic format of variable locations was still being tested and was behind a compile-time flag, so not all builds / bots would correctly run them. The solution at the time, to get at least some test coverage, was to have tests opt-in to non-intrinsic debug-info if it was built into LLVM. Nowadays, non-intrinsic format is the default and has been on for more than a year, there's no need for this flag to exist. (I've downgraded the flag from "try" to explicitly requesting non-intrinsic format in some places, so that we can deal with tests that are explicitly about non-intrinsic format in their own commit).
42 lines
1.5 KiB
LLVM
42 lines
1.5 KiB
LLVM
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
|
|
|
|
; When removing the llvm.dbg.value intrinsic in the unreachable block
|
|
; InstCombine would incorrectly return a false Modified status.
|
|
|
|
; CHECK: cond.true:
|
|
; CHECK-NEXT: br label %cond.end
|
|
|
|
define i32 @foo() !dbg !7 {
|
|
entry:
|
|
br i1 false, label %cond.true, label %cond.end
|
|
|
|
cond.true:
|
|
call void @llvm.dbg.value(metadata i32 undef, metadata !12, metadata !DIExpression()), !dbg !13
|
|
br label %cond.end
|
|
|
|
cond.end:
|
|
ret i32 undef
|
|
}
|
|
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata) #0
|
|
|
|
attributes #0 = { nounwind readnone speculatable willreturn }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4}
|
|
!llvm.ident = !{!6}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 12.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
|
!1 = !DIFile(filename: "foo.c", directory: "/")
|
|
!2 = !{}
|
|
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!6 = !{!"clang version 12.0.0"}
|
|
!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
|
|
!8 = !DISubroutineType(types: !9)
|
|
!9 = !{!10}
|
|
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
|
!11 = !{!12, !12}
|
|
!12 = !DILocalVariable(name: "bar", scope: !7, file: !1, line: 1, type: !10)
|
|
!13 = !DILocation(line: 0, scope: !7)
|