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0c1aee0b16
As a follow-up to r246098, require `DISubprogram` definitions
(`isDefinition: true`) to be 'distinct'. Specifically, add an assembler
check, a verifier check, and bitcode upgrading logic to combat testcase
bitrot after the `DIBuilder` change.
While working on the testcases, I realized that
test/Linker/subprogram-linkonce-weak-odr.ll isn't relevant anymore. Its
purpose was to check for a corner case in PR22792 where two subprogram
definitions match exactly and share the same metadata node. The new
verifier check, requiring that subprogram definitions are 'distinct',
precludes that possibility.
I updated almost all the IR with the following script:
git grep -l -E -e '= !DISubprogram\(.* isDefinition: true' |
grep -v test/Bitcode |
xargs sed -i '' -e 's/= \(!DISubprogram(.*, isDefinition: true\)/= distinct \1/'
Likely some variant of would work for out-of-tree testcases.
llvm-svn: 246327
37 lines
1.1 KiB
LLVM
37 lines
1.1 KiB
LLVM
; RUN: llvm-as < %s | llvm-bcanalyzer -dump | FileCheck %s -check-prefix=BC
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; PR23436: Actually emit DEBUG_LOC_AGAIN records.
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; BC: <DEBUG_LOC op
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; BC: <DEBUG_LOC_AGAIN/>
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; BC: <DEBUG_LOC op
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; BC: <DEBUG_LOC_AGAIN/>
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; RUN: llvm-as < %s | llvm-dis | FileCheck %s
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; RUN: verify-uselistorder %s
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; Check that this round-trips correctly.
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define void @foo() {
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entry:
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%a = add i32 0, 0, !dbg !3
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%b = add i32 0, 1, !dbg !3
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%c = add i32 0, 2, !dbg !4
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ret void, !dbg !4
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}
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; CHECK-LABEL: entry:
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; CHECK-NEXT: %a = add i32 0, 0, !dbg ![[LINE1:[0-9]+]]
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; CHECK-NEXT: %b = add i32 0, 1, !dbg ![[LINE1]]
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; CHECK-NEXT: %c = add i32 0, 2, !dbg ![[LINE2:[0-9]+]]
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; CHECK-NEXT: ret void, !dbg ![[LINE2]]
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; CHECK: ![[LINE1]] = !DILocation(line: 1,
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; CHECK: ![[LINE2]] = !DILocation(line: 2,
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!llvm.module.flags = !{!0}
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!0 = !{i32 2, !"Debug Info Version", i32 3}
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!1 = distinct !DICompileUnit(language: DW_LANG_C99, file: !DIFile(filename: "f", directory: "/d"),
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subprograms: !{!2})
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!2 = distinct !DISubprogram(name: "foo")
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!3 = !DILocation(line: 1, scope: !2)
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!4 = !DILocation(line: 2, scope: !2)
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