108 lines
4.6 KiB
YAML
108 lines
4.6 KiB
YAML
# RUN: llc -run-pass=livedebugvalues -emit-call-site-info -march=x86-64 -o - \
|
|
# RUN: %s -experimental-debug-variable-locations=false | FileCheck %s
|
|
|
|
## Test from PR47628.
|
|
## Compiled from source:
|
|
## extern void bar(int);
|
|
## extern int side_effect, value;
|
|
## int foo(int param) {
|
|
## side_effect = param;
|
|
## param = value;
|
|
## bar(param);
|
|
## return 0;
|
|
## }
|
|
## Using command:
|
|
## $ clang m.c -O1 -g -c -mllvm -stop-before=livedebugvalues
|
|
|
|
## Confirm that Backup Entry Value is not used for modified parameter "param".
|
|
|
|
# CHECK: ![[PARAM:.*]] = !DILocalVariable(name: "param"
|
|
# CHECK: renamable $edi = MOV32rm $rip, 1, $noreg
|
|
# CHECK-NOT: DBG_VALUE $edi, $noreg, ![[PARAM]], !DIExpression(DW_OP_LLVM_entry_value, 1)
|
|
# CHECK-NEXT: DBG_VALUE $edi, $noreg, ![[PARAM]], !DIExpression()
|
|
# CHECK-NEXT: CALL64pcrel32 @bar
|
|
# CHECK-NOT: DBG_VALUE $edi, $noreg, ![[PARAM]], !DIExpression(DW_OP_LLVM_entry_value, 1)
|
|
|
|
--- |
|
|
; ModuleID = 'm.c'
|
|
source_filename = "m.c"
|
|
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-unknown-linux-gnu"
|
|
|
|
@side_effect = external dso_local local_unnamed_addr global i32, align 4
|
|
@value = external dso_local local_unnamed_addr global i32, align 4
|
|
|
|
; Function Attrs: nounwind uwtable
|
|
define dso_local i32 @foo(i32 %param) local_unnamed_addr !dbg !8 {
|
|
entry:
|
|
call void @llvm.dbg.value(metadata i32 %param, metadata !13, metadata !DIExpression()), !dbg !14
|
|
store i32 %param, i32* @side_effect, align 4, !dbg !15, !tbaa !16
|
|
%0 = load i32, i32* @value, align 4, !dbg !20, !tbaa !16
|
|
call void @llvm.dbg.value(metadata i32 %0, metadata !13, metadata !DIExpression()), !dbg !14
|
|
call void @bar(i32 %0), !dbg !21
|
|
ret i32 0, !dbg !22
|
|
}
|
|
|
|
declare !dbg !23 dso_local void @bar(i32) local_unnamed_addr
|
|
|
|
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!3, !4, !5, !6}
|
|
!llvm.ident = !{!7}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 13.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
|
!1 = !DIFile(filename: "m.c", directory: "/dir")
|
|
!2 = !{}
|
|
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
|
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!5 = !{i32 1, !"wchar_size", i32 4}
|
|
!6 = !{i32 7, !"uwtable", i32 1}
|
|
!7 = !{!"clang version 13.0.0"}
|
|
!8 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !12)
|
|
!9 = !DISubroutineType(types: !10)
|
|
!10 = !{!11, !11}
|
|
!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
|
!12 = !{!13}
|
|
!13 = !DILocalVariable(name: "param", arg: 1, scope: !8, file: !1, line: 4, type: !11)
|
|
!14 = !DILocation(line: 0, scope: !8)
|
|
!15 = !DILocation(line: 5, column: 17, scope: !8)
|
|
!16 = !{!17, !17, i64 0}
|
|
!17 = !{!"int", !18, i64 0}
|
|
!18 = !{!"omnipotent char", !19, i64 0}
|
|
!19 = !{!"Simple C/C++ TBAA"}
|
|
!20 = !DILocation(line: 6, column: 13, scope: !8)
|
|
!21 = !DILocation(line: 7, column: 5, scope: !8)
|
|
!22 = !DILocation(line: 8, column: 5, scope: !8)
|
|
!23 = !DISubprogram(name: "bar", scope: !1, file: !1, line: 1, type: !24, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
|
!24 = !DISubroutineType(types: !25)
|
|
!25 = !{null, !11}
|
|
|
|
...
|
|
---
|
|
name: foo
|
|
alignment: 16
|
|
liveins:
|
|
- { reg: '$edi', virtual-reg: '' }
|
|
callSites:
|
|
- { bb: 0, offset: 6, fwdArgRegs:
|
|
- { arg: 0, reg: '$edi' } }
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $edi
|
|
|
|
DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14
|
|
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
|
|
CFI_INSTRUCTION def_cfa_offset 16
|
|
MOV32mr $rip, 1, $noreg, @side_effect, $noreg, killed renamable $edi, debug-location !15 :: (store 4 into @side_effect, !tbaa !16)
|
|
renamable $edi = MOV32rm $rip, 1, $noreg, @value, $noreg, debug-location !20 :: (dereferenceable load 4 from @value, !tbaa !16)
|
|
DBG_VALUE $edi, $noreg, !13, !DIExpression(), debug-location !14
|
|
CALL64pcrel32 @bar, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, debug-location !21
|
|
$eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, debug-location !22
|
|
$rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !22
|
|
CFI_INSTRUCTION def_cfa_offset 8, debug-location !22
|
|
RET64 killed $eax, debug-location !22
|
|
|
|
...
|