1# RUN: llc -O1 -emit-call-site-info -start-after=livedebugvalues -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s 2 3# Based on the following C reproducer: 4# 5# extern void call(long, int); 6# extern int a, b, c, d; 7# 8# int e() { return a; } 9# 10# int main() { 11# d = c; 12# b = e(); 13# call(c, c); 14# return 0; 15# } 16 17--- | 18 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 19 target triple = "x86_64" 20 21 @a = external global i32, align 4 22 @c = external global i32, align 4 23 @d = external global i32, align 4 24 @b = external global i32, align 4 25 26 ; Function Attrs: noinline norecurse nounwind readonly 27 define i32 @e() #0 !dbg !13 { 28 entry: 29 %0 = load i32, ptr @a, align 4, !dbg !16 30 ret i32 %0, !dbg !16 31 } 32 33 ; Function Attrs: noinline nounwind 34 define i32 @main() #1 !dbg !17 { 35 entry: 36 %0 = load i32, ptr @c, align 4, !dbg !19 37 store i32 %0, ptr @d, align 4, !dbg !19 38 %call = tail call i32 @e(), !dbg !20 39 store i32 %call, ptr @b, align 4, !dbg !20 40 %conv = sext i32 %0 to i64, !dbg !21 41 tail call void @call(i64 %conv, i32 %0), !dbg !21 42 ret i32 0, !dbg !22 43 } 44 45 declare !dbg !4 void @call(i64, i32) 46 47 attributes #0 = { noinline norecurse nounwind readonly "frame-pointer"="all" } 48 attributes #1 = { noinline nounwind "frame-pointer"="all" } 49 50 !llvm.dbg.cu = !{!0} 51 !llvm.module.flags = !{!9, !10, !11} 52 !llvm.ident = !{!12} 53 54 !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) 55 !1 = !DIFile(filename: "x86_two_defs.c", directory: "/") 56 !2 = !{} 57 !3 = !{!4} 58 !4 = !DISubprogram(name: "call", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 59 !5 = !DISubroutineType(types: !6) 60 !6 = !{null, !7, !8} 61 !7 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed) 62 !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 63 !9 = !{i32 2, !"Dwarf Version", i32 5} 64 !10 = !{i32 2, !"Debug Info Version", i32 3} 65 !11 = !{i32 1, !"wchar_size", i32 4} 66 !12 = !{!"clang version 10.0.0"} 67 !13 = distinct !DISubprogram(name: "e", scope: !1, file: !1, line: 5, type: !14, scopeLine: 5, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) 68 !14 = !DISubroutineType(types: !15) 69 !15 = !{!8} 70 !16 = !DILocation(line: 6, scope: !13) 71 !17 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 9, type: !14, scopeLine: 9, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) 72 !19 = !DILocation(line: 10, scope: !17) 73 !20 = !DILocation(line: 11, scope: !17) 74 !21 = !DILocation(line: 12, scope: !17) 75 !22 = !DILocation(line: 13, scope: !17) 76 77... 78--- 79name: e 80tracksRegLiveness: true 81body: | 82 bb.0.entry: 83 frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp 84 CFI_INSTRUCTION def_cfa_offset 16 85 CFI_INSTRUCTION offset $rbp, -16 86 $rbp = frame-setup MOV64rr $rsp 87 CFI_INSTRUCTION def_cfa_register $rbp 88 renamable $eax = MOV32rm $rip, 1, $noreg, @a, $noreg, debug-location !16 :: (dereferenceable load (s32) from @a) 89 $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !16 90 CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !16 91 RET64 $eax, debug-location !16 92 93... 94--- 95name: main 96tracksRegLiveness: true 97callSites: 98 - { bb: 0, offset: 10 } 99 - { bb: 0, offset: 14, fwdArgRegs: 100 - { arg: 0, reg: '$rdi' } 101 - { arg: 1, reg: '$esi' } } 102body: | 103 bb.0.entry: 104 liveins: $rbx 105 106 frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp 107 CFI_INSTRUCTION def_cfa_offset 16 108 CFI_INSTRUCTION offset $rbp, -16 109 $rbp = frame-setup MOV64rr $rsp 110 CFI_INSTRUCTION def_cfa_register $rbp 111 frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp, debug-location !19 112 frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp 113 CFI_INSTRUCTION offset $rbx, -24 114 renamable $ebx = MOV32rm $rip, 1, $noreg, @c, $noreg, debug-location !19 :: (dereferenceable load (s32) from @c) 115 MOV32mr $rip, 1, $noreg, @d, $noreg, renamable $ebx, debug-location !19 :: (store (s32) into @d) 116 CALL64pcrel32 @e, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !20 117 MOV32mr $rip, 1, $noreg, @b, $noreg, killed renamable $eax, debug-location !20 :: (store (s32) into @b) 118 renamable $rdi = MOVSX64rr32 killed renamable $ebx, debug-location !21 119 $esi = MOV32rr $edi, debug-location !21 120 CALL64pcrel32 @call, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit killed $esi, implicit-def $rsp, implicit-def $ssp, debug-location !21 121 $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22 122 $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !22 123 $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 124 $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 125 CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !22 126 RET64 $eax, debug-location !22 127 128... 129 130# Verify that call site entries are emitted for both parameters in the call to 131# %call. Both parameters should be described by the preserved $ebx register, 132# and the value for the first parameter (passed in $rdi) should be 133# sign-extended to 64 bits. 134 135# CHECK: DW_TAG_call_site_parameter 136# CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI) 137# CHECK-NEXT: DW_AT_call_value (DW_OP_breg3 RBX+0, DW_OP_constu 0xffffffff, DW_OP_and, DW_OP_convert ({{.*}}) "DW_ATE_signed_32", DW_OP_convert ({{.*}}) "DW_ATE_signed_64") 138# 139# CHECK: DW_TAG_call_site_parameter 140# CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI) 141# CHECK-NEXT: DW_AT_call_value (DW_OP_breg3 RBX+0) 142 143