98 lines
3.6 KiB
Plaintext
98 lines
3.6 KiB
Plaintext
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# RUN: llc -verify-machineinstrs -start-after=prologepilog -filetype=obj -o - %s | llvm-dwarfdump -v --debug-info - | FileCheck %s
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# CHECK: .debug_info contents:
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# CHECK: DW_TAG_variable
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# CHECK-NEXT: DW_AT_location {{.*}} (DW_OP_reg1 RDX, DW_OP_bit_piece 0x8 0x8)
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# CHECK-NEXT: DW_AT_name {{.*}}"dh"
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--- |
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; Manually created after:
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; char f(int i) {
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; char dh = i>>8;
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; return dh;
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; }
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.12.0"
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define signext i8 @f(i32 %i) local_unnamed_addr #0 !dbg !7 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !13, metadata !15), !dbg !16
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%shr1 = lshr i32 %i, 8, !dbg !17
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%conv = trunc i32 %shr1 to i8, !dbg !18
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tail call void @llvm.dbg.value(metadata i8 %conv, i64 0, metadata !14, metadata !15), !dbg !19
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ret i8 %conv, !dbg !20
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}
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #0
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attributes #0 = { nounwind readnone }
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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 4.0.0 (trunk 288677) (llvm/trunk 288679)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "t.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, !"PIC Level", i32 2}
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!6 = !{!"clang version 4.0.0 (trunk 288677) (llvm/trunk 288679)"}
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!7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !12)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !11}
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!10 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !{!13, !14}
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!13 = !DILocalVariable(name: "i", arg: 1, scope: !7, file: !1, line: 1, type: !11)
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!14 = !DILocalVariable(name: "dh", scope: !7, file: !1, line: 2, type: !10)
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!15 = !DIExpression()
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!16 = !DILocation(line: 1, column: 12, scope: !7)
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!17 = !DILocation(line: 2, column: 14, scope: !7)
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!18 = !DILocation(line: 2, column: 13, scope: !7)
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!19 = !DILocation(line: 2, column: 8, scope: !7)
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!20 = !DILocation(line: 3, column: 3, scope: !7)
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...
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---
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name: f
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alignment: 16
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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tracksRegLiveness: true
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liveins:
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- { reg: '$edi' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 8
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offsetAdjustment: 0
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maxAlignment: 0
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adjustsStack: false
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hasCalls: false
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maxCallFrameSize: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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fixedStack:
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- { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16 }
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body: |
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bb.0.entry:
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liveins: $edi, $rbp
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frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
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CFI_INSTRUCTION def_cfa_offset 16
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CFI_INSTRUCTION offset $rbp, -16
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$rbp = frame-setup MOV64rr $rsp
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CFI_INSTRUCTION def_cfa_register $rbp
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DBG_VALUE $dh, _, !14, !15, debug-location !16
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$edi = SHR32ri killed $edi, 8, implicit-def dead $eflags, debug-location !17
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$eax = MOVSX32rr8 $dil, implicit killed $edi, debug-location !20
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$rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !20
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RETQ $eax, debug-location !20
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...
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