forked from OSchip/llvm-project
Further reduce the IR in this testcase based on a further reduction
of the original source by David Blaikie (thanks!). llvm-svn: 245642
This commit is contained in:
Adrian Prantl
parent
46e5639806
commit
62222edb77
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@ -1,80 +1,63 @@
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; RUN: opt < %s -O2 -gvn -S | FileCheck %s
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; RUN: opt < %s -gvn -S | FileCheck %s
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;
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; Produced at -O2 from:
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; struct context {
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; int cur_pid
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; };
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; int a, b, c, f, d;
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; int pid_for_task(int);
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; sample(struct context *p1)
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; {
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; if (c)
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; b = a;
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; if (a && p1->cur_pid)
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; sample_internal();
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; int a, b;
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; void f1(int *p1) {
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; if (b)
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; a = 1;
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; if (a && *p1)
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; f4();
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; }
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; callback() {
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; f = pid_for_task(d);
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; sample(&f);
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; int f2(int);
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; void f3(void) {
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; a = f2(1);
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; f1(&a);
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; }
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "arm64-apple-ios"
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%struct.context = type { i32 }
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@c = common global i32 0, align 4
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@a = common global i32 0, align 4
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@b = common global i32 0, align 4
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@d = common global i32 0, align 4
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@f = common global i32 0, align 4
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; Function Attrs: nounwind
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declare i32 @sample_internal(...)
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; Function Attrs: nounwind
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define i32 @callback() #0 {
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define void @f3() #0 {
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entry:
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%0 = load i32, i32* @d, align 4, !dbg !37
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; Verify that the call still has a debug location after GVN.
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; CHECK: %call = tail call i32 @pid_for_task(i32 %0) #{{[0-9]}}, !dbg
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%call = tail call i32 @pid_for_task(i32 %0) #3, !dbg !37
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; CHECK: %call = tail call i32 @f2(i32 1) #{{[0-9]}}, !dbg
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%call = tail call i32 @f2(i32 1) #3, !dbg !36
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store i32 %call, i32* @a, align 4, !dbg !36, !tbaa !25
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tail call void @llvm.dbg.value(metadata i32* @a, i64 0, metadata !11, metadata !21) #3, !dbg !39
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%0 = load i32, i32* @b, align 4, !dbg !39, !tbaa !25
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%tobool.i = icmp eq i32 %0, 0, !dbg !39
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br i1 %tobool.i, label %if.end.i, label %land.lhs.true.i.thread, !dbg !40
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store i32 %call, i32* @f, align 4, !dbg !37
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tail call void @llvm.dbg.value(metadata %struct.context* bitcast (i32* @f to %struct.context*), i64 0, metadata !25, metadata !26) #3, !dbg !38
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%1 = load i32, i32* @c, align 4, !dbg !40
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%tobool.i = icmp eq i32 %1, 0, !dbg !40
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%.pr.i = load i32, i32* @a, align 4, !dbg !41
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br i1 %tobool.i, label %if.end.i, label %if.then.i, !dbg !42
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if.then.i: ; preds = %entry
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store i32 %.pr.i, i32* @b, align 4, !dbg !43
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br label %if.end.i, !dbg !43
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if.end.i: ; preds = %if.then.i, %entry
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%tobool1.i = icmp eq i32 %.pr.i, 0, !dbg !41
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land.lhs.true.i.thread: ; preds = %entry
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store i32 1, i32* @a, align 4, !dbg !41, !tbaa !25
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br label %if.then.3.i, !dbg !42
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if.end.i: ; preds = %entry
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; This instruction has no debug location -- in this
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; particular case it was removed by a bug in SimplifyCFG.
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%2 = load i32, i32* @f, align 4
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%.pr = load i32, i32* @a, align 4
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; GVN is supposed to replace the load of @f with a direct reference to %call.
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; GVN is supposed to replace the load of %.pr with a direct reference to %call.
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; CHECK: %tobool2.i = icmp eq i32 %call, 0, !dbg
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%tobool2.i = icmp eq i32 %2, 0, !dbg !41
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%tobool2.i = icmp eq i32 %.pr, 0, !dbg !43
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br i1 %tobool2.i, label %f1.exit, label %if.then.3.i, !dbg !43
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%or.cond = or i1 %tobool1.i, %tobool2.i, !dbg !41
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br i1 %or.cond, label %sample.exit, label %if.then.3.i, !dbg !41
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if.then.3.i: ; preds = %if.end.i, %land.lhs.true.i.thread
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%call.i = tail call i32 bitcast (i32 (...)* @f4 to i32 ()*)() #3, !dbg !44
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br label %f1.exit, !dbg !44
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if.then.3.i: ; preds = %if.end.i
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%call.i = tail call i32 bitcast (i32 (...)* @sample_internal to i32 ()*)() #3, !dbg !44
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br label %sample.exit, !dbg !44
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sample.exit: ; preds = %if.end.i, %if.then.3.i
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ret i32 undef, !dbg !45
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f1.exit: ; preds = %if.end.i, %if.then.3.i
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ret void, !dbg !45
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}
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declare i32 @pid_for_task(i32) #1
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declare i32 @f2(i32)
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declare i32 @f4(...)
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
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@ -84,52 +67,51 @@ attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!22, !23}
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!llvm.ident = !{!24}
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!llvm.module.flags = !{!18, !19}
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!llvm.ident = !{!20}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 244473) (llvm/trunk 244644)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3, globals: !16)
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 245562) (llvm/trunk 245569)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3, globals: !15)
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!1 = !DIFile(filename: "test.c", directory: "/")
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!2 = !{}
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!3 = !{!4, !13}
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!4 = !DISubprogram(name: "sample", scope: !5, file: !5, line: 6, type: !6, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
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!5 = !DIFile(filename: "test.i", directory: "/")
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!3 = !{!4, !12}
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!4 = !DISubprogram(name: "f1", scope: !1, file: !1, line: 2, type: !6, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, variables: !10)
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!6 = !DISubroutineType(types: !7)
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!7 = !{!8, !9}
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!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
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!10 = !DICompositeType(tag: DW_TAG_structure_type, name: "context", file: !5, line: 1, size: 32, align: 32, elements: !11)
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!11 = !{!12}
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!12 = !DIDerivedType(tag: DW_TAG_member, name: "cur_pid", scope: !10, file: !5, line: 2, baseType: !8, size: 32, align: 32)
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!13 = !DISubprogram(name: "callback", scope: !5, file: !5, line: 13, type: !14, isLocal: false, isDefinition: true, scopeLine: 13, isOptimized: false, function: i32 ()* @callback, variables: !2)
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!14 = !DISubroutineType(types: !15)
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!15 = !{!8}
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!16 = !{!17, !18, !19, !20, !21}
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!17 = !DIGlobalVariable(name: "a", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @a)
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!18 = !DIGlobalVariable(name: "b", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @b)
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!19 = !DIGlobalVariable(name: "c", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @c)
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!20 = !DIGlobalVariable(name: "f", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @f)
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!21 = !DIGlobalVariable(name: "d", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @d)
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!22 = !{i32 2, !"Dwarf Version", i32 2}
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!23 = !{i32 2, !"Debug Info Version", i32 3}
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!24 = !{!"clang version 3.8.0 (trunk 244473) (llvm/trunk 244644)"}
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!25 = !DILocalVariable(name: "p1", arg: 1, scope: !4, file: !5, line: 6, type: !9)
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!26 = !DIExpression()
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!27 = !DILocation(line: 6, scope: !4)
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!28 = !DILocation(line: 8, scope: !29)
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!29 = distinct !DILexicalBlock(scope: !4, file: !5, line: 8)
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!30 = !DILocation(line: 10, scope: !31)
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!31 = distinct !DILexicalBlock(scope: !4, file: !5, line: 10)
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!32 = !DILocation(line: 8, scope: !4)
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!33 = !DILocation(line: 9, scope: !29)
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!34 = !DILocation(line: 10, scope: !4)
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!35 = !DILocation(line: 11, scope: !31)
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!36 = !DILocation(line: 12, scope: !4)
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!37 = !DILocation(line: 14, scope: !13)
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!38 = !DILocation(line: 6, scope: !4, inlinedAt: !39)
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!39 = distinct !DILocation(line: 15, scope: !13)
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!40 = !DILocation(line: 8, scope: !29, inlinedAt: !39)
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!41 = !DILocation(line: 10, scope: !31, inlinedAt: !39)
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!42 = !DILocation(line: 8, scope: !4, inlinedAt: !39)
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!43 = !DILocation(line: 9, scope: !29, inlinedAt: !39)
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!44 = !DILocation(line: 11, scope: !31, inlinedAt: !39)
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!45 = !DILocation(line: 16, scope: !13)
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!7 = !{null, !8}
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!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
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!9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !{!11}
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!11 = !DILocalVariable(name: "p1", arg: 1, scope: !4, file: !1, line: 2, type: !8)
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!12 = !DISubprogram(name: "f3", scope: !1, file: !1, line: 9, type: !13, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, function: void ()* @f3, variables: !2)
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!13 = !DISubroutineType(types: !14)
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!14 = !{null}
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!15 = !{!16, !17}
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!16 = !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, variable: i32* @a)
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!17 = !DIGlobalVariable(name: "b", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, variable: i32* @b)
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!18 = !{i32 2, !"Dwarf Version", i32 2}
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!19 = !{i32 2, !"Debug Info Version", i32 3}
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!20 = !{!"clang version 3.8.0 (trunk 245562) (llvm/trunk 245569)"}
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!21 = !DIExpression()
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!22 = !DILocation(line: 2, scope: !4)
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!23 = !DILocation(line: 3, scope: !24)
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!24 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3)
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!25 = !{!26, !26, i64 0}
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!26 = !{!"int", !27, i64 0}
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!27 = !{!"omnipotent char", !28, i64 0}
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!28 = !{!"Simple C/C++ TBAA"}
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!29 = !DILocation(line: 3, scope: !4)
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!30 = !DILocation(line: 4, scope: !24)
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!31 = !DILocation(line: 5, scope: !32)
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!32 = distinct !DILexicalBlock(scope: !4, file: !1, line: 5)
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!33 = !DILocation(line: 5, scope: !4)
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!34 = !DILocation(line: 6, scope: !32)
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!35 = !DILocation(line: 7, scope: !4)
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!36 = !DILocation(line: 5, scope: !32, inlinedAt: !37)
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!37 = distinct !DILocation(line: 11, scope: !12)
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!38 = !DILocation(line: 10, scope: !12)
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!39 = !DILocation(line: 2, scope: !4, inlinedAt: !37)
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!40 = !DILocation(line: 3, scope: !24, inlinedAt: !37)
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!41 = !DILocation(line: 3, scope: !4, inlinedAt: !37)
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!42 = !DILocation(line: 4, scope: !24, inlinedAt: !37)
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!43 = !DILocation(line: 5, scope: !4, inlinedAt: !37)
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!44 = !DILocation(line: 6, scope: !32, inlinedAt: !37)
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!45 = !DILocation(line: 12, scope: !12)
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