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