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
60 lines
2.8 KiB
LLVM
60 lines
2.8 KiB
LLVM
; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
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; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - --try-experimental-debuginfo-iterators | FileCheck %s
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; RUN: opt -passes=safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
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; RUN: opt -passes=safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - --try-experimental-debuginfo-iterators | FileCheck %s
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; Test llvm.dbg.value for dynamic allocas moved onto the unsafe stack.
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; In the dynamic alloca case, the dbg.value does not change with the exception
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; of the alloca pointer in the first argument being replaced with the new stack
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; top address.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define void @f(i32 %n) safestack !dbg !6 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %n, metadata !11, metadata !14), !dbg !15
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%0 = zext i32 %n to i64, !dbg !16
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; CHECK: store ptr %[[VLA:.*]], ptr @__safestack_unsafe_stack_ptr
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; CHECK: #dbg_value(ptr %[[VLA]], ![[TYPE:.*]], !DIExpression(DW_OP_deref),
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; CHECK: call void @capture({{.*}} %[[VLA]])
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%vla = alloca i8, i64 %0, align 16, !dbg !16
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tail call void @llvm.dbg.value(metadata ptr %vla, metadata !12, metadata !17), !dbg !18
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call void @capture(ptr nonnull %vla), !dbg !19
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ret void, !dbg !20
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}
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declare void @capture(ptr)
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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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 3.9.0 (trunk 272832) (llvm/trunk 272831)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "../llvm/1.cc", directory: "/code/build-llvm")
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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 3.9.0 (trunk 272832) (llvm/trunk 272831)"}
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!6 = distinct !DISubprogram(name: "f", linkageName: "_Z1fi", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !10)
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!7 = !DISubroutineType(types: !8)
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!8 = !{null, !9}
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!9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !{!11, !12}
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!11 = !DILocalVariable(name: "n", arg: 1, scope: !6, file: !1, line: 2, type: !9)
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; CHECK-DAG: ![[TYPE]] = !DILocalVariable(name: "x",
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!12 = !DILocalVariable(name: "x", scope: !6, file: !1, line: 3, type: !13)
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!13 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!14 = !DIExpression()
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!15 = !DILocation(line: 2, column: 12, scope: !6)
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!16 = !DILocation(line: 3, column: 3, scope: !6)
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!17 = !DIExpression(DW_OP_deref)
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!18 = !DILocation(line: 3, column: 8, scope: !6)
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!19 = !DILocation(line: 4, column: 3, scope: !6)
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!20 = !DILocation(line: 5, column: 1, scope: !6)
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