# RUN: llc -mtriple=x86_64-pc-linux %s -run-pass=branch-folder -o - | FileCheck %s
--- |
; ModuleID = 'case2.c'
source_filename = "case2.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"
@q1 = dso_local local_unnamed_addr global i32 1, align 4, !dbg !0
@q2 = dso_local local_unnamed_addr global i32 4, align 4, !dbg !5
@q3 = dso_local local_unnamed_addr global i32 2, align 4, !dbg !8
@g1 = dso_local local_unnamed_addr global i32 0, align 4, !dbg !10
@g2 = dso_local local_unnamed_addr global i32 0, align 4, !dbg !12
@g3 = dso_local local_unnamed_addr global i32 0, align 4, !dbg !14
; Function Attrs: nounwind uwtable
define dso_local i32 @multiple_inl_multiple_loc() local_unnamed_addr #0 !dbg !23 {
entry:
%0 = load i32, ptr @q1, align 4, !dbg !27, !tbaa !28
call void @llvm.dbg.value(metadata i32 %0, metadata !32, metadata !DIExpression()), !dbg !38
call void @llvm.dbg.value(metadata i32 100, metadata !37, metadata !DIExpression()), !dbg !38
%cmp.i = icmp sgt i32 %0, 3, !dbg !40
br i1 %cmp.i, label %if.then.i, label %if.end.i, !dbg !42
if.then.i: ; preds = %entry
tail call void @abort() #3, !dbg !43
unreachable, !dbg !43
if.end.i: ; preds = %entry
%cmp1.i = icmp slt i32 %0, 1, !dbg !44
br i1 %cmp1.i, label %if.then2.i, label %inl2.exit, !dbg !46
if.then2.i: ; preds = %if.end.i
tail call void @abort() #3, !dbg !47
unreachable, !dbg !47
inl2.exit: ; preds = %if.end.i
%mul.i = mul nuw nsw i32 %0, 152, !dbg !48
%add.i = add nuw nsw i32 %mul.i, 100, !dbg !49
store i32 %add.i, ptr @g1, align 4, !dbg !50, !tbaa !28
%1 = load i32, ptr @q2, align 4, !dbg !51, !tbaa !28
call void @llvm.dbg.value(metadata i32 %1, metadata !32, metadata !DIExpression()), !dbg !52
call void @llvm.dbg.value(metadata i32 200, metadata !37, metadata !DIExpression()), !dbg !52
%cmp.i3 = icmp sgt i32 %1, 3, !dbg !54
br i1 %cmp.i3, label %if.then.i4, label %if.end.i6, !dbg !55
if.then.i4: ; preds = %inl2.exit
tail call void @abort() #3, !dbg !56
unreachable, !dbg !56
if.end.i6: ; preds = %inl2.exit
%cmp1.i5 = icmp slt i32 %1, 1, !dbg !57
br i1 %cmp1.i5, label %if.then2.i7, label %inl2.exit10, !dbg !58
if.then2.i7: ; preds = %if.end.i6
tail call void @abort() #3, !dbg !59
unreachable, !dbg !59
inl2.exit10: ; preds = %if.end.i6
%mul.i8 = mul nuw nsw i32 %1, 152, !dbg !60
%add.i9 = add nuw nsw i32 %mul.i8, 200, !dbg !61
store i32 %add.i9, ptr @g2, align 4, !dbg !62, !tbaa !28
%2 = load i32, ptr @q3, align 4, !dbg !63, !tbaa !28
call void @llvm.dbg.value(metadata i32 %2, metadata !32, metadata !DIExpression()), !dbg !64
call void @llvm.dbg.value(metadata i32 300, metadata !37, metadata !DIExpression()), !dbg !64
%cmp.i11 = icmp sgt i32 %2, 3, !dbg !66
br i1 %cmp.i11, label %if.then.i12, label %if.end.i14, !dbg !67
if.then.i12: ; preds = %inl2.exit10
tail call void @abort() #3, !dbg !68
unreachable, !dbg !68
if.end.i14: ; preds = %inl2.exit10
%cmp1.i13 = icmp slt i32 %2, 1, !dbg !69
br i1 %cmp1.i13, label %if.then2.i15, label %inl2.exit18, !dbg !70
if.then2.i15: ; preds = %if.end.i14
tail call void @abort() #3, !dbg !71
unreachable, !dbg !71
inl2.exit18: ; preds = %if.end.i14
%mul.i16 = mul nuw nsw i32 %2, 152, !dbg !72
%add.i17 = add nuw nsw i32 %mul.i16, 300, !dbg !73
store i32 %add.i17, ptr @q3, align 4, !dbg !74, !tbaa !28
ret i32 0, !dbg !75
}
; Function Attrs: noreturn nounwind
declare !dbg !76 void @abort() local_unnamed_addr #1
; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare void @llvm.dbg.value(metadata, metadata, metadata) #2
attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { noreturn nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { noreturn nounwind }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!16, !17, !18, !19, !20, !21}
!llvm.ident = !{!22}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "q1", scope: !2, file: !3, line: 12, type: !7, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C11, file: !3, producer: "clang version 16.0.0.prerel", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None)
!3 = !DIFile(filename: "case2.c", directory: "/", checksumkind: CSK_MD5, checksum: "5093c50294e57eaa7f9ed00bfd62075c")
!4 = !{!0, !5, !8, !10, !12, !14}
!5 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression())
!6 = distinct !DIGlobalVariable(name: "q2", scope: !2, file: !3, line: 12, type: !7, isLocal: false, isDefinition: true)
!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!8 = !DIGlobalVariableExpression(var: !9, expr: !DIExpression())
!9 = distinct !DIGlobalVariable(name: "q3", scope: !2, file: !3, line: 12, type: !7, isLocal: false, isDefinition: true)
!10 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())
!11 = distinct !DIGlobalVariable(name: "g1", scope: !2, file: !3, line: 13, type: !7, isLocal: false, isDefinition: true)
!12 = !DIGlobalVariableExpression(var: !13, expr: !DIExpression())
!13 = distinct !DIGlobalVariable(name: "g2", scope: !2, file: !3, line: 13, type: !7, isLocal: false, isDefinition: true)
!14 = !DIGlobalVariableExpression(var: !15, expr: !DIExpression())
!15 = distinct !DIGlobalVariable(name: "g3", scope: !2, file: !3, line: 13, type: !7, isLocal: false, isDefinition: true)
!16 = !{i32 7, !"Dwarf Version", i32 5}
!17 = !{i32 2, !"Debug Info Version", i32 3}
!18 = !{i32 1, !"wchar_size", i32 4}
!19 = !{i32 8, !"PIC Level", i32 2}
!20 = !{i32 7, !"PIE Level", i32 2}
!21 = !{i32 7, !"uwtable", i32 2}
!22 = !{!"clang version 16.0.0.prerel"}
!23 = distinct !DISubprogram(name: "multiple_inl_multiple_loc", scope: !3, file: !3, line: 15, type: !24, scopeLine: 16, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !26)
!24 = !DISubroutineType(types: !25)
!25 = !{!7}
!26 = !{}
!27 = !DILocation(line: 17, column: 13, scope: !23)
!28 = !{!29, !29, i64 0}
!29 = !{!"int", !30, i64 0}
!30 = !{!"omnipotent char", !31, i64 0}
!31 = !{!"Simple C/C++ TBAA"}
!32 = !DILocalVariable(name: "q", arg: 1, scope: !33, file: !3, line: 3, type: !7)
!33 = distinct !DISubprogram(name: "inl2", scope: !3, file: !3, line: 3, type: !34, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !36)
!34 = !DISubroutineType(types: !35)
!35 = !{!7, !7, !7}
!36 = !{!32, !37}
!37 = !DILocalVariable(name: "n", arg: 2, scope: !33, file: !3, line: 3, type: !7)
!38 = !DILocation(line: 0, scope: !33, inlinedAt: !39)
!39 = distinct !DILocation(line: 17, column: 8, scope: !23)
!40 = !DILocation(line: 5, column: 9, scope: !41, inlinedAt: !39)
!41 = distinct !DILexicalBlock(scope: !33, file: !3, line: 5, column: 7)
!42 = !DILocation(line: 5, column: 7, scope: !33, inlinedAt: !39)
!43 = !DILocation(line: 6, column: 5, scope: !41, inlinedAt: !39)
!44 = !DILocation(line: 7, column: 9, scope: !45, inlinedAt: !39)
!45 = distinct !DILexicalBlock(scope: !33, file: !3, line: 7, column: 7)
!46 = !DILocation(line: 7, column: 7, scope: !33, inlinedAt: !39)
!47 = !DILocation(line: 8, column: 5, scope: !45, inlinedAt: !39)
!48 = !DILocation(line: 9, column: 12, scope: !33, inlinedAt: !39)
!49 = !DILocation(line: 9, column: 18, scope: !33, inlinedAt: !39)
!50 = !DILocation(line: 17, column: 6, scope: !23)
!51 = !DILocation(line: 18, column: 13, scope: !23)
!52 = !DILocation(line: 0, scope: !33, inlinedAt: !53)
!53 = distinct !DILocation(line: 18, column: 8, scope: !23)
!54 = !DILocation(line: 5, column: 9, scope: !41, inlinedAt: !53)
!55 = !DILocation(line: 5, column: 7, scope: !33, inlinedAt: !53)
!56 = !DILocation(line: 6, column: 5, scope: !41, inlinedAt: !53)
!57 = !DILocation(line: 7, column: 9, scope: !45, inlinedAt: !53)
!58 = !DILocation(line: 7, column: 7, scope: !33, inlinedAt: !53)
!59 = !DILocation(line: 8, column: 5, scope: !45, inlinedAt: !53)
!60 = !DILocation(line: 9, column: 12, scope: !33, inlinedAt: !53)
!61 = !DILocation(line: 9, column: 18, scope: !33, inlinedAt: !53)
!62 = !DILocation(line: 18, column: 6, scope: !23)
!63 = !DILocation(line: 19, column: 13, scope: !23)
!64 = !DILocation(line: 0, scope: !33, inlinedAt: !65)
!65 = distinct !DILocation(line: 19, column: 8, scope: !23)
!66 = !DILocation(line: 5, column: 9, scope: !41, inlinedAt: !65)
!67 = !DILocation(line: 5, column: 7, scope: !33, inlinedAt: !65)
!68 = !DILocation(line: 6, column: 5, scope: !41, inlinedAt: !65)
!69 = !DILocation(line: 7, column: 9, scope: !45, inlinedAt: !65)
!70 = !DILocation(line: 7, column: 7, scope: !33, inlinedAt: !65)
!71 = !DILocation(line: 8, column: 5, scope: !45, inlinedAt: !65)
!72 = !DILocation(line: 9, column: 12, scope: !33, inlinedAt: !65)
!73 = !DILocation(line: 9, column: 18, scope: !33, inlinedAt: !65)
!74 = !DILocation(line: 19, column: 6, scope: !23)
!75 = !DILocation(line: 20, column: 3, scope: !23)
!76 = !DISubprogram(name: "abort", scope: !77, file: !77, line: 514, type: !78, flags: DIFlagPrototyped | DIFlagNoReturn, spFlags: DISPFlagOptimized, retainedNodes: !26)
!77 = !DIFile(filename: "/usr/include/stdlib.h", directory: "", checksumkind: CSK_MD5, checksum: "f7a1412d75d9e3df251dfc21b02d59ef")
!78 = !DISubroutineType(types: !79)
!79 = !{null}
...
---
name: multiple_inl_multiple_loc
alignment: 16
tracksRegLiveness: true
tracksDebugUserValues: true
frameInfo:
stackSize: 8
offsetAdjustment: -8
maxAlignment: 1
adjustsStack: true
hasCalls: true
maxCallFrameSize: 0
machineFunctionInfo: {}
body: |
bb.0.entry:
successors: %bb.1(0x00000800), %bb.2(0x7ffff800)
frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
frame-setup CFI_INSTRUCTION def_cfa_offset 16
renamable $eax = MOV32rm $rip, 1, $noreg, @q1, $noreg, debug-instr-number 1, debug-location !27 :: (dereferenceable load (s32) from @q1, !tbaa !28)
DBG_INSTR_REF !32, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !38
DBG_VALUE 100, $noreg, !37, !DIExpression(), debug-location !38
CMP32ri8 renamable $eax, 4, implicit-def $eflags, debug-location !40
JCC_1 %bb.2, 12, implicit killed $eflags, debug-location !42
JMP_1 %bb.1, debug-location !42
bb.1.if.then.i:
successors:
CALL64pcrel32 target-flags(x86-plt) @abort, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !43
bb.2.if.end.i:
successors: %bb.3(0x00000800), %bb.4(0x7ffff800)
liveins: $eax
TEST32rr renamable $eax, renamable $eax, implicit-def $eflags, debug-location !44
JCC_1 %bb.4, 15, implicit killed $eflags, debug-location !46
JMP_1 %bb.3, debug-location !46
bb.3.if.then2.i:
successors:
CALL64pcrel32 target-flags(x86-plt) @abort, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !47
bb.4.inl2.exit:
successors: %bb.5(0x00000800), %bb.6(0x7ffff800)
liveins: $eax
renamable $eax = nuw nsw IMUL32rri killed renamable $eax, 152, implicit-def dead $eflags, debug-location !48
renamable $eax = nuw nsw ADD32ri8 killed renamable $eax, 100, implicit-def dead $eflags, debug-location !49
MOV32mr $rip, 1, $noreg, @g1, $noreg, killed renamable $eax, debug-location !50 :: (store (s32) into @g1, !tbaa !28)
renamable $eax = MOV32rm $rip, 1, $noreg, @q2, $noreg, debug-instr-number 2, debug-location !51 :: (dereferenceable load (s32) from @q2, !tbaa !28)
DBG_INSTR_REF !32, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(2, 0), debug-location !52
DBG_VALUE 200, $noreg, !37, !DIExpression(), debug-location !52
CMP32ri8 renamable $eax, 4, implicit-def $eflags, debug-location !54
JCC_1 %bb.6, 12, implicit killed $eflags, debug-location !55
JMP_1 %bb.5, debug-location !55
bb.5.if.then.i4:
successors:
CALL64pcrel32 target-flags(x86-plt) @abort, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !56
bb.6.if.end.i6:
successors: %bb.7(0x00000800), %bb.8(0x7ffff800)
liveins: $eax
TEST32rr renamable $eax, renamable $eax, implicit-def $eflags, debug-location !57
JCC_1 %bb.8, 15, implicit killed $eflags, debug-location !58
JMP_1 %bb.7, debug-location !58
bb.7.if.then2.i7:
successors:
CALL64pcrel32 target-flags(x86-plt) @abort, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !59
bb.8.inl2.exit10:
successors: %bb.9(0x00000800), %bb.10(0x7ffff800)
liveins: $eax
renamable $eax = nuw nsw IMUL32rri killed renamable $eax, 152, implicit-def dead $eflags, debug-location !60
renamable $eax = nuw nsw ADD32ri killed renamable $eax, 200, implicit-def dead $eflags, debug-location !61
MOV32mr $rip, 1, $noreg, @g2, $noreg, killed renamable $eax, debug-location !62 :: (store (s32) into @g2, !tbaa !28)
renamable $eax = MOV32rm $rip, 1, $noreg, @q3, $noreg, debug-instr-number 3, debug-location !63 :: (dereferenceable load (s32) from @q3, !tbaa !28)
DBG_INSTR_REF !32, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(3, 0), debug-location !64
DBG_VALUE 300, $noreg, !37, !DIExpression(), debug-location !64
CMP32ri8 renamable $eax, 4, implicit-def $eflags, debug-location !66
JCC_1 %bb.10, 12, implicit killed $eflags, debug-location !67
JMP_1 %bb.9, debug-location !67
bb.9.if.then.i12:
successors:
CALL64pcrel32 target-flags(x86-plt) @abort, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !68
bb.10.if.end.i14:
successors: %bb.11(0x00000800), %bb.12(0x7ffff800)
liveins: $eax
TEST32rr renamable $eax, renamable $eax, implicit-def $eflags, debug-location !69
JCC_1 %bb.12, 15, implicit killed $eflags, debug-location !70
JMP_1 %bb.11, debug-location !70
bb.11.if.then2.i15:
successors:
CALL64pcrel32 target-flags(x86-plt) @abort, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, debug-location !71
bb.12.inl2.exit18:
liveins: $eax
renamable $eax = nuw nsw IMUL32rri killed renamable $eax, 152, implicit-def dead $eflags, debug-location !72
renamable $eax = nuw nsw ADD32ri killed renamable $eax, 300, implicit-def dead $eflags, debug-location !73
MOV32mr $rip, 1, $noreg, @q3, $noreg, killed renamable $eax, debug-location !74 :: (store (s32) into @q3, !tbaa !28)
$eax = MOV32r0 implicit-def dead $eflags, debug-location !75
$rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !75
frame-destroy CFI_INSTRUCTION def_cfa_offset 8, debug-location !75
RET 0, $eax, debug-location !75
...
# In this case we have a abort call block folded from two locations in
# three inlined instances of inl1():
#
# 1 | #include <stdlib.h>
# 2 |
# 3 | static inline int inl2(int q, int n)
# 4 | {
# 5 | if (q > 3)
# 6 | abort();
# 7 | if (q < 1)
# 8 | abort();
# 9 | return q * 152 + n;
# 10 | }
# 11 |
# 12 | int q1 = 1, q2 = 4, q3 = 2;
# 13 | int g1, g2, g3;
# 14 |
# 15 | int multiple_inl_multiple_loc()
# 16 | {
# 17 | g1 = inl2(q1, 100);
# 18 | g2 = inl2(q2, 200);
# 19 | q3 = inl2(q3, 300);
# 20 | return 0;
# 21 | }
#
# We should produce a merged location describing that the abort call is located
# at line 0 in inl2() inlined at line 0 in multiple_inl_multiple_loc().
# CHECK-DAG: [[INLINER:![0-9]+]] = distinct !DISubprogram(name: "multiple_inl_multiple_loc"
# CHECK-DAG: [[INLINEE:![0-9]+]] = distinct !DISubprogram(name: "inl2"
# CHECK-NOT: CALL64pcrel32
# CHECK: CALL64pcrel32 target-flags(x86-plt) @abort, {{.*}} debug-location !DILocation(line: 0, scope: [[INLINEE]], inlinedAt: !DILocation(line: 0, scope: [[INLINER]]))
# CHECK-NOT: CALL64pcrel32
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