094572701d
This patch makes the final major change of the RemoveDIs project, changing the default IR output from debug intrinsics to debug records. This is expected to break a large number of tests: every single one that tests for uses or declarations of debug intrinsics and does not explicitly disable writing records. If this patch has broken your downstream tests (or upstream tests on a configuration I wasn't able to run): 1. If you need to immediately unblock a build, pass `--write-experimental-debuginfo=false` to LLVM's option processing for all failing tests (remember to use `-mllvm` for clang/flang to forward arguments to LLVM). 2. For most test failures, the changes are trivial and mechanical, enough that they can be done by script; see the migration guide for a guide on how to do this: https://llvm.org/docs/RemoveDIsDebugInfo.html#test-updates 3. If any tests fail for reasons other than FileCheck check lines that need updating, such as assertion failures, that is most likely a real bug with this patch and should be reported as such. For more information, see the recent PSA: https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578
64 lines
3.1 KiB
LLVM
64 lines
3.1 KiB
LLVM
; RUN: opt %s -passes=loop-vectorize -force-vector-width=2 -force-vector-interleave=2 -S -o - \
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; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg"
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; RUN: opt --try-experimental-debuginfo-iterators %s -passes=loop-vectorize -force-vector-width=2 -force-vector-interleave=2 -S -o - \
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; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg"
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;; Check that loop-vectorize removes redundant debug intrinsics after it makes
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;; a change. This has a significant positive impact on peak memory and compiler
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;; run time.
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;; Check there is only one dbg.assign.
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; CHECK: #dbg_assign
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;; Check that the loop was actually modified.
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; CHECK: extractelement
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define void @test1(ptr noalias nocapture %a, ptr noalias nocapture readonly %b) {
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entry:
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call void @llvm.dbg.assign(metadata ptr %a, metadata !11, metadata !DIExpression(), metadata !16, metadata ptr undef, metadata !DIExpression()), !dbg !28
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call void @llvm.dbg.assign(metadata ptr %a, metadata !11, metadata !DIExpression(), metadata !16, metadata ptr undef, metadata !DIExpression()), !dbg !28
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds float, ptr %b, i64 %indvars.iv
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%0 = load float, ptr %arrayidx, align 4
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%cmp1 = fcmp ogt float %0, 1.000000e+02
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tail call void @llvm.assume(i1 %cmp1)
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%add = fadd float %0, 1.000000e+00
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%arrayidx5 = getelementptr inbounds float, ptr %a, i64 %indvars.iv
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store float %add, ptr %arrayidx5, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv, 1599
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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}
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declare void @llvm.assume(i1) #0
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declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3, !4, !5, !1000}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 14.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.cpp", directory: "/")
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!2 = !{i32 7, !"Dwarf Version", i32 5}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 1, !"wchar_size", i32 4}
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!5 = !{i32 7, !"uwtable", i32 1}
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!6 = !{!"clang version 14.0.0)"}
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!7 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funv", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null}
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!10 = !{!11}
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!11 = !DILocalVariable(name: "Counter", scope: !7, file: !1, line: 3, type: !12)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!16 = distinct !DIAssignID()
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!19 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 3)
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!28 = !DILocation(line: 6, column: 1, scope: !7)
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!1000 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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