| # RUN: llc -O1 -emit-call-site-info -start-after=livedebugvalues -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s |
| |
| # Based on the following C reproducer: |
| # |
| # extern void call(long, int); |
| # extern int a, b, c, d; |
| # |
| # int e() { return a; } |
| # |
| # int main() { |
| # d = c; |
| # b = e(); |
| # call(c, c); |
| # return 0; |
| # } |
| |
| --- | |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64" |
| |
| @a = external global i32, align 4 |
| @c = external global i32, align 4 |
| @d = external global i32, align 4 |
| @b = external global i32, align 4 |
| |
| ; Function Attrs: noinline norecurse nounwind readonly |
| define i32 @e() #0 !dbg !13 { |
| entry: |
| %0 = load i32, i32* @a, align 4, !dbg !16 |
| ret i32 %0, !dbg !16 |
| } |
| |
| ; Function Attrs: noinline nounwind |
| define i32 @main() #1 !dbg !17 { |
| entry: |
| %0 = load i32, i32* @c, align 4, !dbg !19 |
| store i32 %0, i32* @d, align 4, !dbg !19 |
| %call = tail call i32 @e(), !dbg !20 |
| store i32 %call, i32* @b, align 4, !dbg !20 |
| %conv = sext i32 %0 to i64, !dbg !21 |
| tail call void @call(i64 %conv, i32 %0), !dbg !21 |
| ret i32 0, !dbg !22 |
| } |
| |
| declare !dbg !4 void @call(i64, i32) |
| |
| attributes #0 = { noinline norecurse nounwind readonly "frame-pointer"="all" } |
| attributes #1 = { noinline nounwind "frame-pointer"="all" } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!9, !10, !11} |
| !llvm.ident = !{!12} |
| |
| !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) |
| !1 = !DIFile(filename: "x86_two_defs.c", directory: "/") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DISubprogram(name: "call", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{null, !7, !8} |
| !7 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed) |
| !8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !9 = !{i32 2, !"Dwarf Version", i32 5} |
| !10 = !{i32 2, !"Debug Info Version", i32 3} |
| !11 = !{i32 1, !"wchar_size", i32 4} |
| !12 = !{!"clang version 10.0.0"} |
| !13 = distinct !DISubprogram(name: "e", scope: !1, file: !1, line: 5, type: !14, scopeLine: 5, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) |
| !14 = !DISubroutineType(types: !15) |
| !15 = !{!8} |
| !16 = !DILocation(line: 6, scope: !13) |
| !17 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 9, type: !14, scopeLine: 9, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) |
| !19 = !DILocation(line: 10, scope: !17) |
| !20 = !DILocation(line: 11, scope: !17) |
| !21 = !DILocation(line: 12, scope: !17) |
| !22 = !DILocation(line: 13, scope: !17) |
| |
| ... |
| --- |
| name: e |
| tracksRegLiveness: true |
| body: | |
| bb.0.entry: |
| frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| CFI_INSTRUCTION offset $rbp, -16 |
| $rbp = frame-setup MOV64rr $rsp |
| CFI_INSTRUCTION def_cfa_register $rbp |
| renamable $eax = MOV32rm $rip, 1, $noreg, @a, $noreg, debug-location !16 :: (dereferenceable load 4 from @a) |
| $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !16 |
| CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !16 |
| RETQ $eax, debug-location !16 |
| |
| ... |
| --- |
| name: main |
| tracksRegLiveness: true |
| callSites: |
| - { bb: 0, offset: 10 } |
| - { bb: 0, offset: 14, fwdArgRegs: |
| - { arg: 0, reg: '$rdi' } |
| - { arg: 1, reg: '$esi' } } |
| body: | |
| bb.0.entry: |
| liveins: $rbx |
| |
| frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION def_cfa_offset 16 |
| CFI_INSTRUCTION offset $rbp, -16 |
| $rbp = frame-setup MOV64rr $rsp |
| CFI_INSTRUCTION def_cfa_register $rbp |
| frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp, debug-location !19 |
| frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp |
| CFI_INSTRUCTION offset $rbx, -24 |
| renamable $ebx = MOV32rm $rip, 1, $noreg, @c, $noreg, debug-location !19 :: (dereferenceable load 4 from @c) |
| MOV32mr $rip, 1, $noreg, @d, $noreg, renamable $ebx, debug-location !19 :: (store 4 into @d) |
| CALL64pcrel32 @e, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !20 |
| MOV32mr $rip, 1, $noreg, @b, $noreg, killed renamable $eax, debug-location !20 :: (store 4 into @b) |
| renamable $rdi = MOVSX64rr32 killed renamable $ebx, debug-location !21 |
| $esi = MOV32rr $edi, debug-location !21 |
| CALL64pcrel32 @call, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit killed $esi, implicit-def $rsp, implicit-def $ssp, debug-location !21 |
| $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22 |
| $rsp = frame-destroy ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !22 |
| $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 |
| $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22 |
| CFI_INSTRUCTION def_cfa $rsp, 8, debug-location !22 |
| RETQ $eax, debug-location !22 |
| |
| ... |
| |
| # Verify that call site entries are emitted for both parameters in the call to |
| # %call. Both parameters should be described by the preserved $ebx register, |
| # and the value for the first parameter (passed in $rdi) should be |
| # sign-extended to 64 bits. |
| |
| # CHECK: DW_TAG_call_site_parameter |
| # CHECK-NEXT: DW_AT_location (DW_OP_reg5 RDI) |
| # 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") |
| # |
| # CHECK: DW_TAG_call_site_parameter |
| # CHECK-NEXT: DW_AT_location (DW_OP_reg4 RSI) |
| # CHECK-NEXT: DW_AT_call_value (DW_OP_breg3 RBX+0) |
| |