forked from OSchip/llvm-project
69 lines
2.7 KiB
LLVM
69 lines
2.7 KiB
LLVM
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; RUN: llc -O3 -debug-entry-values -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Verify that we produce call site entries for the zero-valued parameters.
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;
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; Based on the following reproducer:
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;
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; #include <stdint.h>
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; extern void callee(uint8_t, uint16_t, uint32_t, void *);
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; int caller() {
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; callee(0, 0, 0, (void *)0);
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; return 1;
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; }
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; CHECK: DW_TAG_GNU_call_site_parameter
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; CHECK-NEXT: DW_AT_location (DW_OP_reg2 RCX)
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; CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit0)
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; CHECK: DW_TAG_GNU_call_site_parameter
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; CHECK-NEXT: DW_AT_location (DW_OP_reg1 RDX)
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; CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit0)
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; CHECK: DW_TAG_GNU_call_site_parameter
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; CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI)
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; CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit0)
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; CHECK: DW_TAG_GNU_call_site_parameter
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; CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)
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; CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit0)
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; Function Attrs: nounwind uwtable
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define i32 @caller() #0 !dbg !15 {
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entry:
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tail call void @callee(i8 zeroext 0, i16 zeroext 0, i32 0, i8* null), !dbg !19
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ret i32 1, !dbg !20
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}
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declare !dbg !5 void @callee(i8 zeroext, i16 zeroext, i32, i8*)
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attributes #0 = { nounwind uwtable }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!11, !12, !13}
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!llvm.ident = !{!14}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
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!1 = !DIFile(filename: "zero.c", directory: "/")
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!2 = !{}
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!3 = !{!4, !5}
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!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
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!5 = !DISubprogram(name: "callee", scope: !1, file: !1, line: 2, type: !6, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
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!6 = !DISubroutineType(types: !7)
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!7 = !{null, !8, !9, !10, !4}
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!8 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
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!9 = !DIBasicType(name: "unsigned short", size: 16, encoding: DW_ATE_unsigned)
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!10 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
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!11 = !{i32 2, !"Dwarf Version", i32 4}
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!12 = !{i32 2, !"Debug Info Version", i32 3}
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!13 = !{i32 1, !"wchar_size", i32 4}
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!14 = !{!"clang version 10.0.0"}
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!15 = distinct !DISubprogram(name: "caller", scope: !1, file: !1, line: 3, type: !16, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!16 = !DISubroutineType(types: !17)
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!17 = !{!18}
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!18 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!19 = !DILocation(line: 4, scope: !15)
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!20 = !DILocation(line: 5, scope: !15)
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