60e1c835d3
SROA needs to update llvm.dbg.assign intrinsics when it migrates debug info in response to alloca splitting; this patch updates the debug info migration code to handle DPVAssigns as well, making use of generic code to avoid duplication as much as possible.
64 lines
2.7 KiB
LLVM
64 lines
2.7 KiB
LLVM
; RUN: opt -passes=sroa -S %s -o - | FileCheck %s
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; RUN: opt --try-experimental-debuginfo-iterators -passes=sroa -S %s -o - | FileCheck %s
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;; Check that a dbg.assign for a promoted variable becomes a kill location if
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;; it used an arglist.
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; CHECK: if.then:
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; CHECK-NEXT: dbg.value(metadata i32 poison,
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; CHECK: if.else:
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; CHECK-NEXT: dbg.value(metadata i32 2,
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declare i8 @get_i8()
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define internal fastcc i64 @fun() !dbg !18 {
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entry:
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%codepoint = alloca i32, align 4, !DIAssignID !27
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call void @llvm.dbg.assign(metadata i1 poison, metadata !15, metadata !DIExpression(), metadata !27, metadata ptr %codepoint, metadata !DIExpression()), !dbg !26
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%0 = call i8 @get_i8() #2
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%1 = and i8 %0, 15
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%and14 = zext i8 %1 to i32
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%shl = shl nuw nsw i32 %and14, 12
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%2 = call i8 @get_i8() #2
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%3 = and i8 %2, 63
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%and21 = zext i8 %3 to i32
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%or22 = or i32 %shl, %and21
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%cmp = icmp ugt i32 %or22, 57343
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br i1 %cmp, label %if.then, label %if.else
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if.then:
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store i32 %or22, ptr %codepoint, align 4, !DIAssignID !25
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call void @llvm.dbg.assign(metadata !DIArgList(i32 %shl, i32 %and21), metadata !15, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_or, DW_OP_stack_value), metadata !25, metadata ptr %codepoint, metadata !DIExpression()), !dbg !26
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br label %end
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if.else:
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store i32 2, ptr %codepoint, align 4, !DIAssignID !28
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call void @llvm.dbg.assign(metadata i32 2, metadata !15, metadata !DIExpression(), metadata !28, metadata ptr %codepoint, metadata !DIExpression()), !dbg !26
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br label %end
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end:
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%r = load i32, ptr %codepoint
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%rr = sext i32 %r to i64
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ret i64 %rr
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}
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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 = !{!13, !14}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 17.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, imports: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "reduce.cpp", directory: "/")
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!2 = !{}
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!13 = !{i32 2, !"Debug Info Version", i32 3}
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!14 = !{i32 7, !"debug-info-assignment-tracking", i1 true}
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!15 = !DILocalVariable(name: "codepoint", scope: !18, file: !1, line: 10, type: !24)
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!18 = distinct !DISubprogram(name: "fun", linkageName: "fun", scope: !1, file: !1, line: 4, type: !19, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!19 = distinct !DISubroutineType(types: !2)
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!24 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
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!25 = distinct !DIAssignID()
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!26 = !DILocation(line: 0, scope: !18)
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!27 = distinct !DIAssignID()
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!28 = distinct !DIAssignID()
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