4424903156
This patch updates the last few places in LLVM using findDbgValues that don't also collect and handle DPValue objects. This largely involves instcombine and mem2reg changes, and are largely mechanical, calling existing utilities on collections of DPValues instead of just DbgValuesInsts. A variety of tests have had RemoveDIs RUN lines added to them to cover these behaviours. We have some technical debt of the instcombine sinking code for DPValues not being implemented yet, so I've left FIXME stubs indicating that we intend to cover tests with RemoveDIs but haven't yet.
49 lines
2.3 KiB
LLVM
49 lines
2.3 KiB
LLVM
; RUN: opt -instcombine-lower-dbg-declare=0 < %s -passes=instcombine -S | FileCheck %s
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; RUN: opt -instcombine-lower-dbg-declare=1 < %s -passes=instcombine -S | FileCheck %s
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; RUN: opt -instcombine-lower-dbg-declare=0 < %s -passes=instcombine -S --try-experimental-debuginfo-iterators | FileCheck %s
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; RUN: opt -instcombine-lower-dbg-declare=1 < %s -passes=instcombine -S --try-experimental-debuginfo-iterators | FileCheck %s
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define i32 @foo(i32 %j) #0 !dbg !7 {
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entry:
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%j.addr = alloca i32, align 4
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store i32 %j, ptr %j.addr, align 4
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call void @llvm.dbg.declare(metadata ptr %j.addr, metadata !11, metadata !12), !dbg !13
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call void @llvm.dbg.value(metadata i32 10, metadata !16, metadata !12), !dbg !15
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%0 = load i32, ptr %j.addr, align 4, !dbg !14
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ret i32 %0, !dbg !15
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}
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; Instcombine can remove the alloca and forward the load to store, but it
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; should convert the declare to dbg value.
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; CHECK-LABEL: define i32 @foo(i32 %j)
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; CHECK-NOT: alloca
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; CHECK: call void @llvm.dbg.value(metadata i32 %j, {{.*}})
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; CHECK: call void @llvm.dbg.value(metadata i32 10, {{.*}})
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; CHECK: ret i32 %j
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang 5.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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!1 = !DIFile(filename: "a.c", directory: "/tmp")
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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 = !{i32 1, !"PIC Level", i32 2}
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!6 = !{!"clang version 5.0.0 (trunk 302918) (llvm/trunk 302925)"}
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!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !DILocalVariable(name: "j", arg: 1, scope: !7, file: !1, line: 2, type: !10)
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!12 = !DIExpression()
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!13 = !DILocation(line: 2, column: 13, scope: !7)
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!14 = !DILocation(line: 5, column: 10, scope: !7)
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!15 = !DILocation(line: 5, column: 3, scope: !7)
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!16 = !DILocalVariable(name: "h", scope: !7, file: !1, line: 4, type: !10)
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