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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
79 lines
3.2 KiB
LLVM
79 lines
3.2 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-width=4 -S -pass-remarks-missed='loop-vectorize' 2>&1 | FileCheck %s
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; C/C++ code for control flow test
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; int test(int *A, int Length) {
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; for (int i = 0; i < Length; i++) {
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; if (A[i] > 10.0) goto end;
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; A[i] = 0;
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; }
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; end:
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; return 0;
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; }
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; CHECK: remark: source.cpp:5:9: loop not vectorized: loop control flow is not understood by vectorizer
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; CHECK: remark: source.cpp:5:9: loop not vectorized: use -Rpass-analysis=loop-vectorize for more info
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; CHECK: _Z4testPii
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; CHECK-NOT: x i32>
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; CHECK: ret
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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; Function Attrs: nounwind optsize ssp uwtable
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define i32 @_Z4testPii(i32* nocapture %A, i32 %Length) #0 {
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entry:
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%cmp8 = icmp sgt i32 %Length, 0, !dbg !10
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br i1 %cmp8, label %for.body.preheader, label %end, !dbg !10
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for.body.preheader: ; preds = %entry
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br label %for.body, !dbg !12
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for.body: ; preds = %for.body.preheader, %if.else
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%indvars.iv = phi i64 [ %indvars.iv.next, %if.else ], [ 0, %for.body.preheader ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv, !dbg !12
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%0 = load i32, i32* %arrayidx, align 4, !dbg !12, !tbaa !15
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%cmp1 = icmp sgt i32 %0, 10, !dbg !12
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br i1 %cmp1, label %end.loopexit, label %if.else, !dbg !12
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if.else: ; preds = %for.body
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store i32 0, i32* %arrayidx, align 4, !dbg !19, !tbaa !15
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1, !dbg !10
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%1 = trunc i64 %indvars.iv.next to i32, !dbg !10
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%cmp = icmp slt i32 %1, %Length, !dbg !10
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br i1 %cmp, label %for.body, label %end.loopexit, !dbg !10
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end.loopexit: ; preds = %if.else, %for.body
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br label %end
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end: ; preds = %end.loopexit, %entry
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ret i32 0, !dbg !20
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}
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attributes #0 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8}
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!llvm.ident = !{!9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0", isOptimized: true, runtimeVersion: 6, emissionKind: 2, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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!1 = !DIFile(filename: "source.cpp", directory: ".")
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!2 = !{}
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!3 = !{!4}
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!4 = distinct !DISubprogram(name: "test", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 2, file: !1, scope: !5, type: !6, function: i32 (i32*, i32)* @_Z4testPii, variables: !2)
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!5 = !DIFile(filename: "source.cpp", directory: ".")
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!6 = !DISubroutineType(types: !2)
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!7 = !{i32 2, !"Dwarf Version", i32 2}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{!"clang version 3.5.0"}
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!10 = !DILocation(line: 3, column: 8, scope: !11)
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!11 = distinct !DILexicalBlock(line: 3, column: 3, file: !1, scope: !4)
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!12 = !DILocation(line: 5, column: 9, scope: !13)
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!13 = distinct !DILexicalBlock(line: 5, column: 9, file: !1, scope: !14)
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!14 = distinct !DILexicalBlock(line: 4, column: 3, file: !1, scope: !11)
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!15 = !{!16, !16, i64 0}
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!16 = !{!"int", !17, i64 0}
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!17 = !{!"omnipotent char", !18, i64 0}
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!18 = !{!"Simple C/C++ TBAA"}
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!19 = !DILocation(line: 8, column: 7, scope: !13)
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!20 = !DILocation(line: 12, column: 3, scope: !4)
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