108 lines
4.4 KiB
LLVM
108 lines
4.4 KiB
LLVM
|
; RUN: opt < %s -gvn -S | FileCheck %s
|
||
|
|
;
|
||
|
|
; Produced at -O2 from:
|
||
|
|
; int a, b;
|
||
|
|
; void f1(int *p1) {
|
||
|
|
; if (b)
|
||
|
|
; a = 1;
|
||
|
|
; if (a && *p1)
|
||
|
|
; f4();
|
||
|
|
; }
|
||
|
|
; int f2(int);
|
||
|
|
; void f3(void) {
|
||
|
|
; a = f2(1);
|
||
|
|
; f1(&a);
|
||
|
|
; }
|
||
|
|
source_filename = "test/DebugInfo/Generic/gvn.ll"
|
||
|
|
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
|
||
|
|
target triple = "arm64-apple-ios"
|
||
|
|
|
||
|
|
@a = common global i32 0, align 4, !dbg !0
|
||
|
|
@b = common global i32 0, align 4, !dbg !6
|
||
|
|
|
||
|
|
; Function Attrs: nounwind
|
||
|
|
define void @f3() #0 !dbg !12 {
|
||
|
|
entry:
|
||
|
|
; Verify that the call still has a debug location after GVN.
|
||
|
|
; CHECK: %call = tail call i32 @f2(i32 1) #{{[0-9]}}, !dbg
|
||
|
|
%call = tail call i32 @f2(i32 1) #0, !dbg !15
|
||
|
|
store i32 %call, i32* @a, align 4, !dbg !15, !tbaa !24
|
||
|
|
tail call void @llvm.dbg.value(metadata i32* @a, metadata !22, metadata !28) #0, !dbg !29
|
||
|
|
%0 = load i32, i32* @b, align 4, !dbg !29, !tbaa !24
|
||
|
|
%tobool.i = icmp eq i32 %0, 0, !dbg !29
|
||
|
|
br i1 %tobool.i, label %if.end.i, label %land.lhs.true.i.thread, !dbg !30
|
||
|
|
|
||
|
|
land.lhs.true.i.thread: ; preds = %entry
|
||
|
|
store i32 1, i32* @a, align 4, !dbg !32, !tbaa !24
|
||
|
|
br label %if.then.3.i, !dbg !33
|
||
|
|
|
||
|
|
; This instruction has no debug location -- in this
|
||
|
|
; particular case it was removed by a bug in SimplifyCFG.
|
||
|
|
if.end.i: ; preds = %entry
|
||
|
|
%.pr = load i32, i32* @a, align 4
|
||
|
|
; GVN is supposed to replace the load of %.pr with a direct reference to %call.
|
||
|
|
; CHECK: %tobool2.i = icmp eq i32 %call, 0, !dbg
|
||
|
|
%tobool2.i = icmp eq i32 %.pr, 0, !dbg !34
|
||
|
|
br i1 %tobool2.i, label %f1.exit, label %if.then.3.i, !dbg !34
|
||
|
|
|
||
|
|
if.then.3.i: ; preds = %if.end.i, %land.lhs.true.i.thread
|
||
|
|
%call.i = tail call i32 bitcast (i32 (...)* @f4 to i32 ()*)() #0, !dbg !35
|
||
|
|
br label %f1.exit, !dbg !35
|
||
|
|
|
||
|
|
f1.exit: ; preds = %if.then.3.i, %if.end.i
|
||
|
|
ret void, !dbg !36
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i32 @f2(i32)
|
||
|
|
|
||
|
|
declare i32 @f4(...)
|
||
|
|
|
||
|
|
; Function Attrs: nounwind readnone
|
||
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
|
||
|
|
|
||
|
|
attributes #0 = { nounwind }
|
||
|
|
attributes #1 = { nounwind readnone }
|
||
|
|
|
||
|
|
!llvm.dbg.cu = !{!2}
|
||
|
|
!llvm.module.flags = !{!9, !10}
|
||
|
|
!llvm.ident = !{!11}
|
||
|
|
|
||
|
|
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
|
||
|
|
!1 = !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true)
|
||
|
|
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.8.0 (trunk 245562) (llvm/trunk 245569)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
|
||
|
|
!3 = !DIFile(filename: "test.c", directory: "/")
|
||
|
|
!4 = !{}
|
||
|
|
!5 = !{!0, !6}
|
||
|
|
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
|
||
|
|
!7 = !DIGlobalVariable(name: "b", scope: !2, file: !3, line: 1, type: !8, isLocal: false, isDefinition: true)
|
||
|
|
!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
|
||
|
|
!9 = !{i32 2, !"Dwarf Version", i32 2}
|
||
|
|
!10 = !{i32 2, !"Debug Info Version", i32 3}
|
||
|
|
!11 = !{!"clang version 3.8.0 (trunk 245562) (llvm/trunk 245569)"}
|
||
|
|
!12 = distinct !DISubprogram(name: "f3", scope: !3, file: !3, line: 9, type: !13, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !4)
|
||
|
|
!13 = !DISubroutineType(types: !14)
|
||
|
|
!14 = !{null}
|
||
|
|
!15 = !DILocation(line: 5, scope: !16, inlinedAt: !23)
|
||
|
|
!16 = distinct !DILexicalBlock(scope: !17, file: !3, line: 5)
|
||
|
|
!17 = distinct !DISubprogram(name: "f1", scope: !3, file: !3, line: 2, type: !18, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !21)
|
||
|
|
!18 = !DISubroutineType(types: !19)
|
||
|
|
!19 = !{null, !20}
|
||
|
|
!20 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64, align: 64)
|
||
|
|
!21 = !{!22}
|
||
|
|
!22 = !DILocalVariable(name: "p1", arg: 1, scope: !17, file: !3, line: 2, type: !20)
|
||
|
|
!23 = distinct !DILocation(line: 11, scope: !12)
|
||
|
|
!24 = !{!25, !25, i64 0}
|
||
|
|
!25 = !{!"int", !26, i64 0}
|
||
|
|
!26 = !{!"omnipotent char", !27, i64 0}
|
||
|
|
!27 = !{!"Simple C/C++ TBAA"}
|
||
|
|
!28 = !DIExpression()
|
||
|
|
!29 = !DILocation(line: 2, scope: !17, inlinedAt: !23)
|
||
|
|
!30 = !DILocation(line: 3, scope: !31, inlinedAt: !23)
|
||
|
|
!31 = distinct !DILexicalBlock(scope: !17, file: !3, line: 3)
|
||
|
|
!32 = !DILocation(line: 3, scope: !17, inlinedAt: !23)
|
||
|
|
!33 = !DILocation(line: 4, scope: !31, inlinedAt: !23)
|
||
|
|
!34 = !DILocation(line: 5, scope: !17, inlinedAt: !23)
|
||
|
|
!35 = !DILocation(line: 6, scope: !16, inlinedAt: !23)
|
||
|
|
!36 = !DILocation(line: 12, scope: !12)
|
||
|
|
|