# RUN: llc -O1 -emit-call-site-info -filetype=obj -mtriple thumbv7em-apple-unknown-macho -start-after=machineverifier %s -o %t.o
# RUN: llvm-dwarfdump %t.o | FileCheck %s
# Crash test, reduced from:
#
# a(float);
# b(double c) {
# d();
# a(c);
# }
#
# Some minor surgery was performed on the MIR to remove a call to a truncating
# cast builtin between the calls to "d" and "a", and to force d0 as the copy dst
# and s0 as the forwarding reg.
#
# This was done to test the case where the copy dst (d0) is a super-reg of the
# forwarding reg (s0).
# CHECK: DW_TAG_GNU_call_site
# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "a"
# CHECK-NOT: call_site_parameter
--- |
target datalayout = "e-m:o-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv7em-apple-unknown-macho"
; Function Attrs: nounwind optsize uwtable
define arm_aapcs_vfpcc i32 @b(double %c) local_unnamed_addr #0 !dbg !16 {
entry:
call void @llvm.dbg.value(metadata double %c, metadata !21, metadata !DIExpression()), !dbg !22
%call = tail call arm_aapcs_vfpcc i32 @d(), !dbg !23
%conv = fptrunc double %c to float, !dbg !24
%call1 = tail call arm_aapcs_vfpcc i32 @a(float %conv), !dbg !25
ret i32 undef, !dbg !26
}
declare arm_aapcs_vfpcc i32 @d(...) local_unnamed_addr #0
declare !dbg !4 arm_aapcs_vfpcc i32 @a(float) local_unnamed_addr #0
declare void @llvm.dbg.value(metadata, metadata, metadata)
declare void @llvm.stackprotector(ptr, ptr)
attributes #0 = { "disable-tail-calls"="false" "frame-pointer"="all" "target-features"="+thumb-mode,+vfp2" }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!10, !11, !12, !13, !14}
!llvm.ident = !{!15}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 ([email protected]:apple/llvm-project.git 6203ec90d0bb0fd705fc0ad00ee263e5579aa709)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
!1 = !DIFile(filename: "jnyn_freeBSD.c", directory: "/Users/vsk/tmp/jnyn")
!2 = !{}
!3 = !{!4}
!4 = !DISubprogram(name: "a", scope: !5, file: !5, line: 1, type: !6, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!5 = !DIFile(filename: "unreduced2.c", directory: "/Users/vsk/tmp/jnyn")
!6 = !DISubroutineType(types: !7)
!7 = !{!8, !9}
!8 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!9 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
!10 = !{i32 7, !"Dwarf Version", i32 4}
!11 = !{i32 2, !"Debug Info Version", i32 3}
!12 = !{i32 1, !"wchar_size", i32 4}
!13 = !{i32 1, !"min_enum_size", i32 4}
!14 = !{i32 7, !"PIC Level", i32 2}
!15 = !{!"clang version 10.0.0 ([email protected]:apple/llvm-project.git 6203ec90d0bb0fd705fc0ad00ee263e5579aa709)"}
!16 = distinct !DISubprogram(name: "b", scope: !5, file: !5, line: 2, type: !17, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !20)
!17 = !DISubroutineType(types: !18)
!18 = !{!8, !19}
!19 = !DIBasicType(name: "double", size: 64, encoding: DW_ATE_float)
!20 = !{!21}
!21 = !DILocalVariable(name: "c", arg: 1, scope: !16, file: !5, line: 2, type: !19)
!22 = !DILocation(line: 0, scope: !16)
!23 = !DILocation(line: 3, column: 3, scope: !16)
!24 = !DILocation(line: 4, column: 5, scope: !16)
!25 = !DILocation(line: 4, column: 3, scope: !16)
!26 = !DILocation(line: 5, column: 1, scope: !16)
...
---
name: b
callSites:
- { bb: 0, offset: 12, fwdArgRegs: [] }
- { bb: 0, offset: 15, fwdArgRegs:
- { arg: 0, reg: '$s0' } }
body: |
bb.0.entry:
liveins: $d0, $lr, $d8
DBG_VALUE $d0, $noreg, !21, !DIExpression(), debug-location !22
frame-setup tPUSH 14, $noreg, $r7, killed $lr, implicit-def $sp, implicit $sp
frame-setup CFI_INSTRUCTION def_cfa_offset 8
frame-setup CFI_INSTRUCTION offset $lr, -4
frame-setup CFI_INSTRUCTION offset $r7, -8
$r7 = frame-setup tMOVr $sp, 14, $noreg
frame-setup CFI_INSTRUCTION def_cfa_register $r7
$sp = frame-setup VSTMDDB_UPD $sp, 14, $noreg, killed $d8
frame-setup CFI_INSTRUCTION offset $d8, -16
$s16 = VMOVS killed $s0, 14, $noreg
$s17 = VMOVS killed $s1, 14, $noreg, implicit-def $d8
DBG_VALUE $d8, $noreg, !21, !DIExpression(), debug-location !22
tBL 14, $noreg, @d, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def dead $r0, debug-location !23
$d0 = VMOVD killed $d8, 14, $noreg, debug-location !24
DBG_VALUE $d0, $noreg, !21, !DIExpression(), debug-location !22
tTAILJMPd @a, 14, $noreg, implicit $sp, implicit $sp, implicit killed $s0, debug-location !25
...
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