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23c462a8b5
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 llvm-svn: 363757
67 lines
2.5 KiB
LLVM
67 lines
2.5 KiB
LLVM
; RUN: llc < %s -stop-before=finalize-isel -o - | FileCheck %s
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source_filename = "foo.c"
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target datalayout = "E-m:e-p:32:32-i64:64-n32"
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target triple = "ppc32"
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; Verify that, when handling split-up integers, the
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; transferring of debug info takes the endianness
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; into consideration.
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;
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; The fragment expression at offset 0 should correspond
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; to the high part of the value on big-endian targets.
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; This basis of this ll file was created by running:
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; clang --target=powerpc -O1 -S -g -emit-llvm foo.c
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;
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; with foo.c being the program:
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; unsigned long long foo(void);
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; void bar() {
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; volatile unsigned long long result = foo();
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; }
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;
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; This file is a slight tweak of that output, with irrelevant
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; lifetime intrinsics, metadata, and debug info being removed.
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; CHECK: [[DL:![0-9]+]] = !DILocalVariable(name: "result"
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;
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; High 32 bits in R3, low 32 bits in R4
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; CHECK: %0:gprc = COPY $r3
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; CHECK: DBG_VALUE %0, $noreg, [[DL]], !DIExpression(DW_OP_LLVM_fragment, 0, 32)
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; CHECK: %1:gprc = COPY $r4
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; CHECK: DBG_VALUE %1, $noreg, [[DL]], !DIExpression(DW_OP_LLVM_fragment, 32, 32)
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define void @bar() local_unnamed_addr #0 !dbg !6 {
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%1 = alloca i64, align 8
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%2 = tail call i64 @foo()
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tail call void @llvm.dbg.value(metadata i64 %2, metadata !10, metadata !DIExpression()), !dbg !13
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store volatile i64 %2, i64* %1, align 8
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ret void
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}
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declare i64 @foo() local_unnamed_addr
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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 = { nounwind }
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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_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "foo.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 = !{!"clang version 6.0.0"}
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!6 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !0, retainedNodes: !9)
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!7 = !DISubroutineType(types: !8)
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!8 = !{null}
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!9 = !{!10}
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!10 = !DILocalVariable(name: "result", scope: !6, file: !1, line: 3, type: !11)
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!11 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !12)
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!12 = !DIBasicType(name: "long long unsigned int", size: 64, encoding: DW_ATE_unsigned)
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!13 = !DILocation(line: 3, column: 31, scope: !6)
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