67 lines
2.5 KiB
LLVM
67 lines
2.5 KiB
LLVM
; RUN: llc < %s -stop-before=expand-isel-pseudos -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 debug-use %0, debug-use $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 debug-use %1, debug-use $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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