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
88 lines
4.8 KiB
LLVM
88 lines
4.8 KiB
LLVM
; Checks that llvm.dbg.declare -> llvm.dbg.value conversion utility
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; (here exposed through the SROA) pass refers to [s|z]exts of values (as
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; opposed to the operand of a [s|z]ext).
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; RUN: opt -S -passes='sroa' %s | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators -S -passes='sroa' %s | FileCheck %s
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; Built from:
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; struct foo { bool b; long i; };
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; void f(bool b, bool expr, foo g) {
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; }
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; And modifying the frag dbg.declare to use a fragmented DIExpression (with offset: 0, size: 4)
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; to test the dbg.declare+fragment case here.
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; Expect two fragments:
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; * first starting at bit 0, 8 bits (for the bool)
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; * second starting at bit 32, 32 bits (for the long)
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; (this happens to create/demonstrate a gap from bits [7, 32))
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; But also check that a complex expression is not used for a lone bool
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; parameter. It can reference the register it's in directly without masking off
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; high bits or anything
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; CHECK: #dbg_value(i8 %g.coerce0, ![[VAR_STRUCT:[0-9]+]], !DIExpression(DW_OP_LLVM_fragment, 0, 8),
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; CHECK: #dbg_value(i64 %g.coerce1, ![[VAR_STRUCT]], !DIExpression(DW_OP_LLVM_fragment, 32, 64),
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; CHECK: #dbg_value(i8 %frombool, ![[VAR_BOOL:[0-9]+]], !DIExpression(),
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; CHECK: #dbg_value(i8 %frombool1, ![[VAR_FRAG:[0-9]+]], !DIExpression(DW_OP_LLVM_fragment, 0, 4),
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%struct.foo = type { i8, i64 }
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; Function Attrs: noinline nounwind uwtable
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define void @_Z1fbb3foo(i1 zeroext %b, i1 zeroext %frag, i8 %g.coerce0, i64 %g.coerce1) #0 !dbg !6 {
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entry:
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%g = alloca %struct.foo, align 8
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%b.addr = alloca i8, align 1
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%frag.addr = alloca i8, align 1
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%0 = getelementptr inbounds { i8, i64 }, ptr %g, i32 0, i32 0
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store i8 %g.coerce0, ptr %0, align 8
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%1 = getelementptr inbounds { i8, i64 }, ptr %g, i32 0, i32 1
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store i64 %g.coerce1, ptr %1, align 8
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%frombool = zext i1 %b to i8
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store i8 %frombool, ptr %b.addr, align 1
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call void @llvm.dbg.declare(metadata ptr %b.addr, metadata !15, metadata !16), !dbg !17
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%frombool1 = sext i1 %frag to i8
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store i8 %frombool1, ptr %frag.addr, align 1
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call void @llvm.dbg.declare(metadata ptr %frag.addr, metadata !18, metadata !23), !dbg !19
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call void @llvm.dbg.declare(metadata ptr %g, metadata !20, metadata !16), !dbg !21
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ret void, !dbg !22
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}
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; CHECK: ![[VAR_STRUCT]] = !DILocalVariable(name: "g"
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; CHECK: ![[VAR_BOOL]] = !DILocalVariable(name: "b"
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; CHECK: ![[VAR_FRAG]] = !DILocalVariable(name: "frag"
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { noinline nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone speculatable }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 (trunk 303077) (llvm/trunk 303098)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "foo.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{!"clang version 5.0.0 (trunk 303077) (llvm/trunk 303098)"}
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!6 = distinct !DISubprogram(name: "f", linkageName: "_Z1fbb3foo", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{null, !9, !9, !10}
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!9 = !DIBasicType(name: "bool", size: 8, encoding: DW_ATE_boolean)
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!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "foo", file: !1, line: 1, size: 128, elements: !11, identifier: "_ZTS3foo")
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!11 = !{!12, !13}
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!12 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !10, file: !1, line: 1, baseType: !9, size: 8)
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!13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !10, file: !1, line: 1, baseType: !14, size: 64, offset: 64)
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!14 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
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!15 = !DILocalVariable(name: "b", arg: 1, scope: !6, file: !1, line: 2, type: !9)
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!16 = !DIExpression()
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!17 = !DILocation(line: 2, column: 13, scope: !6)
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!18 = !DILocalVariable(name: "frag", arg: 2, scope: !6, file: !1, line: 2, type: !9)
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!19 = !DILocation(line: 2, column: 21, scope: !6)
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!20 = !DILocalVariable(name: "g", arg: 3, scope: !6, file: !1, line: 2, type: !10)
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!21 = !DILocation(line: 2, column: 31, scope: !6)
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!22 = !DILocation(line: 3, column: 1, scope: !6)
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!23 = !DIExpression(DW_OP_LLVM_fragment, 0, 4)
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