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5b56cc85b0
This allows targets to make more decisions about reserved registers after isel. For example, now it should be certain there are calls or stack objects in the frame or not, which could have been introduced by legalization. Patch by Matthias Braun git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@363757 91177308-0d34-0410-b5e6-96231b3b80d8
54 lines
2.1 KiB
LLVM
54 lines
2.1 KiB
LLVM
; RUN: llc -mtriple=armv4t-unknown-unknown -start-after=codegenprepare -stop-before=finalize-isel -o - %s | FileCheck %s
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; Verify that a stack-referencing DBG_VALUE is emitted for p5 at the start of
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; the function.
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;
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; Reproducer for PR40777.
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;
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; Based on the following C reproducer:
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;
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; float fn1(int p1, int p2, int p3, int p4, float p5) {
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; return p5;
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; }
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;
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; that was compiled using -O1 -g -S -emit-llvm.
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;
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; Irrelevant metadata, e.g. information about %p[1-4], has been stripped.
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; CHECK: ![[P5:[0-9]*]] = !DILocalVariable(name: "p5"
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define arm_aapcscc float @fn1(i32 %p1, i32 %p2, i32 %p3, i32 %p4, float returned %p5) #0 !dbg !7 {
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; CHECK-LABEL: bb.0.entry:
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; CHECK-NEXT: DBG_VALUE %fixed-stack.0, 0, ![[P5]]
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entry:
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call void @llvm.dbg.value(metadata float %p5, metadata !17, metadata !DIExpression()), !dbg !18
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ret float %p5, !dbg !19
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { norecurse nounwind readnone }
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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, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "float.c", directory: "/")
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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, !"min_enum_size", i32 4}
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!6 = !{!"clang version 9.0.0"}
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!7 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !11, !11, !11, !11, !10}
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!10 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
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!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !{!17}
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!17 = !DILocalVariable(name: "p5", arg: 5, scope: !7, file: !1, line: 1, type: !10)
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!18 = !DILocation(line: 1, scope: !7)
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!19 = !DILocation(line: 2, scope: !7)
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