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1; RUN: llc -emit-call-site-info -O3 -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s2 3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"4target triple = "x86_64-unknown-linux-gnu"5 6; Verify that we produce call site entries for the zero-valued parameters.7;8; Based on the following reproducer:9;10; #include <stdint.h>11; extern void callee(uint8_t, uint16_t, uint32_t, ptr);12; int caller() {13; callee(0, 0, 0, (ptr)0);14; return 1;15; }16 17; CHECK: DW_TAG_GNU_call_site_parameter18; CHECK-NEXT: DW_AT_location (DW_OP_reg2 RCX)19; CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit0)20 21; CHECK: DW_TAG_GNU_call_site_parameter22; CHECK-NEXT: DW_AT_location (DW_OP_reg1 RDX)23; CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit0)24 25; CHECK: DW_TAG_GNU_call_site_parameter26; CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI)27; CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit0)28 29; CHECK: DW_TAG_GNU_call_site_parameter30; CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI)31; CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_lit0)32 33; Function Attrs: nounwind uwtable34define i32 @caller() #0 !dbg !15 {35entry:36 tail call void @callee(i8 zeroext 0, i16 zeroext 0, i32 0, ptr null), !dbg !1937 ret i32 1, !dbg !2038}39 40declare !dbg !5 void @callee(i8 zeroext, i16 zeroext, i32, ptr)41 42attributes #0 = { nounwind uwtable }43 44!llvm.dbg.cu = !{!0}45!llvm.module.flags = !{!11, !12, !13}46!llvm.ident = !{!14}47 48!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)49!1 = !DIFile(filename: "zero.c", directory: "/")50!2 = !{}51!3 = !{!4, !5}52!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)53!5 = !DISubprogram(name: "callee", scope: !1, file: !1, line: 2, type: !6, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)54!6 = !DISubroutineType(types: !7)55!7 = !{null, !8, !9, !10, !4}56!8 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)57!9 = !DIBasicType(name: "unsigned short", size: 16, encoding: DW_ATE_unsigned)58!10 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)59!11 = !{i32 2, !"Dwarf Version", i32 4}60!12 = !{i32 2, !"Debug Info Version", i32 3}61!13 = !{i32 1, !"wchar_size", i32 4}62!14 = !{!"clang version 10.0.0"}63!15 = distinct !DISubprogram(name: "caller", scope: !1, file: !1, line: 3, type: !16, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)64!16 = !DISubroutineType(types: !17)65!17 = !{!18}66!18 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)67!19 = !DILocation(line: 4, scope: !15)68!20 = !DILocation(line: 5, scope: !15)69