# RUN: llc -emit-call-site-info -start-after=livedebugvalues -filetype=obj -o - %s | llvm-dwarfdump - | FileCheck %s
# Based on the following C reproducer:
#
# extern void call_int(int);
# extern void call_int_int(int, int);
# extern void call_long(long);
# extern int global;
#
# int same_reg(int p) {
# call_int(p);
# return 0;
# }
#
# int super_reg(unsigned p) {
# call_long(p);
# return 0;
# }
#
# int sub_reg(int p, long q) {
# call_int_int(q, global);
# return p;
# }
--- |
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64"
@global = external global i32, align 4
; Function Attrs: noinline nounwind
define i32 @same_reg(i32 %p) #0 !dbg !19 {
entry:
call void @llvm.dbg.value(metadata i32 %p, metadata !23, metadata !DIExpression()), !dbg !24
tail call void @call_int(i32 %p), !dbg !25
ret i32 0, !dbg !26
}
declare !dbg !4 void @call_int(i32)
; Function Attrs: noinline nounwind
define i32 @super_reg(i32 %p) #0 !dbg !27 {
entry:
call void @llvm.dbg.value(metadata i32 %p, metadata !32, metadata !DIExpression()), !dbg !33
%conv = zext i32 %p to i64, !dbg !34
tail call void @call_long(i64 %conv), !dbg !34
ret i32 0, !dbg !35
}
declare !dbg !8 void @call_long(i64)
; Function Attrs: noinline nounwind
define i32 @sub_reg(i32 returned %p, i64 %q) #0 !dbg !36 {
entry:
call void @llvm.dbg.value(metadata i32 %p, metadata !40, metadata !DIExpression()), !dbg !42
call void @llvm.dbg.value(metadata i64 %q, metadata !41, metadata !DIExpression()), !dbg !42
%conv = trunc i64 %q to i32, !dbg !43
%0 = load i32, ptr @global, align 4, !dbg !43
tail call void @call_int_int(i32 %conv, i32 %0), !dbg !43
ret i32 %p, !dbg !44
}
declare !dbg !12 void @call_int_int(i32, i32)
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { noinline nounwind "frame-pointer"="all" }
attributes #1 = { nounwind readnone speculatable willreturn }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!15, !16, !17}
!llvm.ident = !{!18}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 (ssh://gerritmirror.rnd.ki.sw.ericsson.se:29418/flextools/llvm-project.git f76e863b549ddccd5e917e2f3ff50646915654d2)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
!1 = !DIFile(filename: "orrxrs.c", directory: "/repo/edasten/llvm-project/llvm")
!2 = !{}
!4 = !DISubprogram(name: "call_int", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!5 = !DISubroutineType(types: !6)
!6 = !{null, !7}
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !DISubprogram(name: "call_long", scope: !1, file: !1, line: 3, type: !9, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!9 = !DISubroutineType(types: !10)
!10 = !{null, !11}
!11 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
!12 = !DISubprogram(name: "call_int_int", scope: !1, file: !1, line: 2, type: !13, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
!13 = !DISubroutineType(types: !14)
!14 = !{null, !7, !7}
!15 = !{i32 2, !"Dwarf Version", i32 4}
!16 = !{i32 2, !"Debug Info Version", i32 3}
!17 = !{i32 1, !"wchar_size", i32 4}
!18 = !{!"clang version 10.0.0 (ssh://gerritmirror.rnd.ki.sw.ericsson.se:29418/flextools/llvm-project.git f76e863b549ddccd5e917e2f3ff50646915654d2)"}
!19 = distinct !DISubprogram(name: "same_reg", scope: !1, file: !1, line: 6, type: !20, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !22)
!20 = !DISubroutineType(types: !21)
!21 = !{!7, !7}
!22 = !{!23}
!23 = !DILocalVariable(name: "p", arg: 1, scope: !19, file: !1, line: 6, type: !7)
!24 = !DILocation(line: 0, scope: !19)
!25 = !DILocation(line: 7, scope: !19)
!26 = !DILocation(line: 8, scope: !19)
!27 = distinct !DISubprogram(name: "super_reg", scope: !1, file: !1, line: 11, type: !28, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !31)
!28 = !DISubroutineType(types: !29)
!29 = !{!7, !30}
!30 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
!31 = !{!32}
!32 = !DILocalVariable(name: "p", arg: 1, scope: !27, file: !1, line: 11, type: !30)
!33 = !DILocation(line: 0, scope: !27)
!34 = !DILocation(line: 12, scope: !27)
!35 = !DILocation(line: 13, scope: !27)
!36 = distinct !DISubprogram(name: "sub_reg", scope: !1, file: !1, line: 16, type: !37, scopeLine: 16, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !39)
!37 = !DISubroutineType(types: !38)
!38 = !{!7, !7, !11}
!39 = !{!40, !41}
!40 = !DILocalVariable(name: "p", arg: 1, scope: !36, file: !1, line: 16, type: !7)
!41 = !DILocalVariable(name: "q", arg: 2, scope: !36, file: !1, line: 16, type: !11)
!42 = !DILocation(line: 0, scope: !36)
!43 = !DILocation(line: 17, scope: !36)
!44 = !DILocation(line: 18, scope: !36)
...
---
name: same_reg
alignment: 4
tracksRegLiveness: true
liveins:
- { reg: '$w0' }
frameInfo:
stackSize: 16
maxAlignment: 8
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
stack:
- { id: 0, type: spill-slot, offset: -8, size: 8, alignment: 8, callee-saved-register: '$lr' }
- { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 8, callee-saved-register: '$fp' }
callSites:
- { bb: 0, offset: 8, fwdArgRegs:
- { arg: 0, reg: '$w0' } }
machineFunctionInfo: {}
body: |
bb.0.entry:
liveins: $w0, $lr
DBG_VALUE $w0, $noreg, !23, !DIExpression(), debug-location !24
DBG_VALUE $w0, $noreg, !23, !DIExpression(), debug-location !24
DBG_VALUE $w0, $noreg, !23, !DIExpression(), debug-location !24
early-clobber $sp = frame-setup STPXpre $fp, killed $lr, $sp, -2 :: (store (s64) into %stack.1), (store (s64) into %stack.0)
$fp = frame-setup ADDXri $sp, 0, 0
frame-setup CFI_INSTRUCTION def_cfa $w29, 16
frame-setup CFI_INSTRUCTION offset $w30, -8, debug-location !25
frame-setup CFI_INSTRUCTION offset $w29, -16, debug-location !25
BL @call_int, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit-def $sp, debug-location !25
DBG_VALUE $w0, $noreg, !23, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !24
$w0 = ORRWrs $wzr, $wzr, 0, debug-location !26
early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 2, debug-location !26 :: (load (s64) from %stack.1), (load (s64) from %stack.0)
RET undef $lr, implicit killed $w0, debug-location !26
...
# CHECK: DW_TAG_GNU_call_site
# CHECK-NEXT: DW_AT_abstract_origin ({{.*}} "call_int")
#
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg0 W0)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_GNU_entry_value(DW_OP_reg0 W0))
---
name: super_reg
alignment: 4
tracksRegLiveness: true
liveins:
- { reg: '$w0' }
frameInfo:
stackSize: 16
maxAlignment: 8
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
stack:
- { id: 0, type: spill-slot, offset: -8, size: 8, alignment: 8, callee-saved-register: '$lr' }
- { id: 1, type: spill-slot, offset: -16, size: 8, alignment: 8, callee-saved-register: '$fp' }
callSites:
- { bb: 0, offset: 9, fwdArgRegs:
- { arg: 0, reg: '$x0' } }
machineFunctionInfo: {}
body: |
bb.0.entry:
liveins: $w0, $lr
DBG_VALUE $w0, $noreg, !32, !DIExpression(), debug-location !33
DBG_VALUE $w0, $noreg, !32, !DIExpression(), debug-location !33
early-clobber $sp = frame-setup STPXpre $fp, killed $lr, $sp, -2 :: (store (s64) into %stack.1), (store (s64) into %stack.0)
$fp = frame-setup ADDXri $sp, 0, 0
frame-setup CFI_INSTRUCTION def_cfa $w29, 16
frame-setup CFI_INSTRUCTION offset $w30, -8, debug-location !34
frame-setup CFI_INSTRUCTION offset $w29, -16, debug-location !34
renamable $w0 = ORRWrs $wzr, killed renamable $w0, 0, implicit-def $x0, debug-location !34
DBG_VALUE $w0, $noreg, !32, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !33
BL @call_long, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $x0, implicit-def $sp, debug-location !34
$w0 = ORRWrs $wzr, $wzr, 0, debug-location !35
early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 2, debug-location !35 :: (load (s64) from %stack.1), (load (s64) from %stack.0)
RET undef $lr, implicit killed $w0, debug-location !35
...
# CHECK: DW_TAG_GNU_call_site
# CHECK-NEXT: DW_AT_abstract_origin ({{.*}} "call_long")
#
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg0 W0)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_GNU_entry_value(DW_OP_reg0 W0))
---
name: sub_reg
alignment: 4
tracksRegLiveness: true
liveins:
- { reg: '$w0' }
- { reg: '$x1' }
frameInfo:
stackSize: 32
maxAlignment: 16
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
stack:
- { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '$x19' }
- { id: 1, type: spill-slot, offset: -24, size: 8, alignment: 8, callee-saved-register: '$lr' }
- { id: 2, type: spill-slot, offset: -32, size: 8, alignment: 8, callee-saved-register: '$fp' }
callSites:
- { bb: 0, offset: 17, fwdArgRegs:
- { arg: 0, reg: '$w0' }
- { arg: 1, reg: '$w1' } }
machineFunctionInfo: {}
body: |
bb.0.entry:
liveins: $w0, $x1, $lr, $x19
DBG_VALUE $w0, $noreg, !40, !DIExpression(), debug-location !42
DBG_VALUE $x1, $noreg, !41, !DIExpression(), debug-location !42
early-clobber $sp = frame-setup STPXpre $fp, killed $lr, $sp, -4 :: (store (s64) into %stack.2), (store (s64) into %stack.1)
frame-setup STRXui killed $x19, $sp, 2 :: (store (s64) into %stack.0)
$fp = frame-setup ADDXri $sp, 0, 0
frame-setup CFI_INSTRUCTION def_cfa $w29, 32
frame-setup CFI_INSTRUCTION offset $w19, -16
frame-setup CFI_INSTRUCTION offset $w30, -24
frame-setup CFI_INSTRUCTION offset $w29, -32
renamable $x9 = ADRP target-flags(aarch64-page) @global, debug-location !43
$x8 = ORRXrs $xzr, killed $x1, 0
DBG_VALUE $x8, $noreg, !41, !DIExpression(), debug-location !42
renamable $w1 = LDRWui killed renamable $x9, target-flags(aarch64-pageoff, aarch64-nc) @global, debug-location !43 :: (dereferenceable load (s32) from @global)
$w19 = ORRWrs $wzr, killed $w0, 0
DBG_VALUE $w19, $noreg, !40, !DIExpression(), debug-location !42
DBG_VALUE $w19, $noreg, !40, !DIExpression(), debug-location !42
$w0 = ORRWrs $wzr, killed $w8, 0, implicit $x8, debug-location !43
BL @call_int_int, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $w0, implicit killed $w1, implicit-def $sp, debug-location !43
DBG_VALUE $x1, $noreg, !41, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !42
$w0 = ORRWrs $wzr, killed $w19, 0, debug-location !44
DBG_VALUE $w0, $noreg, !40, !DIExpression(), debug-location !42
$x19 = frame-destroy LDRXui $sp, 2, debug-location !44 :: (load (s64) from %stack.0)
early-clobber $sp, $fp, $lr = frame-destroy LDPXpost $sp, 4, debug-location !44 :: (load (s64) from %stack.2), (load (s64) from %stack.1)
RET undef $lr, implicit killed $w0, debug-location !44
...
# CHECK: DW_TAG_GNU_call_site
# CHECK-NEXT: DW_AT_abstract_origin ({{.*}} "call_int_int")
#
# CHECK: DW_TAG_GNU_call_site_parameter
# CHECK-NEXT: DW_AT_location (DW_OP_reg0 W0)
# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_GNU_entry_value(DW_OP_reg1 W1))
Codebase Browser
llvm