From: Adrian Prantl Date: Thu, 20 Aug 2015 23:59:39 +0000 (+0000) Subject: Further reduce the IR in this testcase based on a further reduction X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=37d4cd87a1dddc264dc12cdaeecb7199129d110d Further reduce the IR in this testcase based on a further reduction of the original source by David Blaikie (thanks!). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@245642 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/test/DebugInfo/gvn.ll b/test/DebugInfo/gvn.ll index 3f990712ba5..15d2fde9aa8 100644 --- a/test/DebugInfo/gvn.ll +++ b/test/DebugInfo/gvn.ll @@ -1,80 +1,63 @@ -; RUN: opt < %s -O2 -gvn -S | FileCheck %s +; RUN: opt < %s -gvn -S | FileCheck %s ; ; Produced at -O2 from: -; struct context { -; int cur_pid -; }; -; int a, b, c, f, d; -; int pid_for_task(int); -; sample(struct context *p1) -; { -; if (c) -; b = a; -; if (a && p1->cur_pid) -; sample_internal(); +; int a, b; +; void f1(int *p1) { +; if (b) +; a = 1; +; if (a && *p1) +; f4(); ; } -; callback() { -; f = pid_for_task(d); -; sample(&f); +; int f2(int); +; void f3(void) { +; a = f2(1); +; f1(&a); ; } - target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" target triple = "arm64-apple-ios" -%struct.context = type { i32 } - -@c = common global i32 0, align 4 @a = common global i32 0, align 4 @b = common global i32 0, align 4 -@d = common global i32 0, align 4 -@f = common global i32 0, align 4 ; Function Attrs: nounwind declare i32 @sample_internal(...) ; Function Attrs: nounwind -define i32 @callback() #0 { +define void @f3() #0 { entry: - %0 = load i32, i32* @d, align 4, !dbg !37 - ; Verify that the call still has a debug location after GVN. - ; CHECK: %call = tail call i32 @pid_for_task(i32 %0) #{{[0-9]}}, !dbg - %call = tail call i32 @pid_for_task(i32 %0) #3, !dbg !37 - - store i32 %call, i32* @f, align 4, !dbg !37 - tail call void @llvm.dbg.value(metadata %struct.context* bitcast (i32* @f to %struct.context*), i64 0, metadata !25, metadata !26) #3, !dbg !38 - %1 = load i32, i32* @c, align 4, !dbg !40 - %tobool.i = icmp eq i32 %1, 0, !dbg !40 - %.pr.i = load i32, i32* @a, align 4, !dbg !41 - br i1 %tobool.i, label %if.end.i, label %if.then.i, !dbg !42 - -if.then.i: ; preds = %entry - store i32 %.pr.i, i32* @b, align 4, !dbg !43 - br label %if.end.i, !dbg !43 - -if.end.i: ; preds = %if.then.i, %entry - %tobool1.i = icmp eq i32 %.pr.i, 0, !dbg !41 - + ; CHECK: %call = tail call i32 @f2(i32 1) #{{[0-9]}}, !dbg + %call = tail call i32 @f2(i32 1) #3, !dbg !36 + store i32 %call, i32* @a, align 4, !dbg !36, !tbaa !25 + tail call void @llvm.dbg.value(metadata i32* @a, i64 0, metadata !11, metadata !21) #3, !dbg !39 + %0 = load i32, i32* @b, align 4, !dbg !39, !tbaa !25 + %tobool.i = icmp eq i32 %0, 0, !dbg !39 + br i1 %tobool.i, label %if.end.i, label %land.lhs.true.i.thread, !dbg !40 + +land.lhs.true.i.thread: ; preds = %entry + store i32 1, i32* @a, align 4, !dbg !41, !tbaa !25 + br label %if.then.3.i, !dbg !42 + +if.end.i: ; preds = %entry ; This instruction has no debug location -- in this ; particular case it was removed by a bug in SimplifyCFG. - %2 = load i32, i32* @f, align 4 + %.pr = load i32, i32* @a, align 4 - ; GVN is supposed to replace the load of @f with a direct reference to %call. + ; 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 %2, 0, !dbg !41 - - %or.cond = or i1 %tobool1.i, %tobool2.i, !dbg !41 - br i1 %or.cond, label %sample.exit, label %if.then.3.i, !dbg !41 + %tobool2.i = icmp eq i32 %.pr, 0, !dbg !43 + br i1 %tobool2.i, label %f1.exit, label %if.then.3.i, !dbg !43 -if.then.3.i: ; preds = %if.end.i - %call.i = tail call i32 bitcast (i32 (...)* @sample_internal to i32 ()*)() #3, !dbg !44 - br label %sample.exit, !dbg !44 +if.then.3.i: ; preds = %if.end.i, %land.lhs.true.i.thread + %call.i = tail call i32 bitcast (i32 (...)* @f4 to i32 ()*)() #3, !dbg !44 + br label %f1.exit, !dbg !44 -sample.exit: ; preds = %if.end.i, %if.then.3.i - ret i32 undef, !dbg !45 +f1.exit: ; preds = %if.end.i, %if.then.3.i + ret void, !dbg !45 } -declare i32 @pid_for_task(i32) #1 +declare i32 @f2(i32) +declare i32 @f4(...) ; Function Attrs: nounwind readnone declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 @@ -84,52 +67,51 @@ attributes #2 = { nounwind readnone } attributes #3 = { nounwind } !llvm.dbg.cu = !{!0} -!llvm.module.flags = !{!22, !23} -!llvm.ident = !{!24} +!llvm.module.flags = !{!18, !19} +!llvm.ident = !{!20} -!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) +!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) !1 = !DIFile(filename: "test.c", directory: "/") !2 = !{} -!3 = !{!4, !13} -!4 = !DISubprogram(name: "sample", scope: !5, file: !5, line: 6, type: !6, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: false, variables: !2) -!5 = !DIFile(filename: "test.i", directory: "/") +!3 = !{!4, !12} +!4 = !DISubprogram(name: "f1", scope: !1, file: !1, line: 2, type: !6, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, variables: !10) !6 = !DISubroutineType(types: !7) -!7 = !{!8, !9} -!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) -!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64) -!10 = !DICompositeType(tag: DW_TAG_structure_type, name: "context", file: !5, line: 1, size: 32, align: 32, elements: !11) -!11 = !{!12} -!12 = !DIDerivedType(tag: DW_TAG_member, name: "cur_pid", scope: !10, file: !5, line: 2, baseType: !8, size: 32, align: 32) -!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) -!14 = !DISubroutineType(types: !15) -!15 = !{!8} -!16 = !{!17, !18, !19, !20, !21} -!17 = !DIGlobalVariable(name: "a", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @a) -!18 = !DIGlobalVariable(name: "b", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @b) -!19 = !DIGlobalVariable(name: "c", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @c) -!20 = !DIGlobalVariable(name: "f", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @f) -!21 = !DIGlobalVariable(name: "d", scope: !0, file: !5, line: 4, type: !8, isLocal: false, isDefinition: true, variable: i32* @d) -!22 = !{i32 2, !"Dwarf Version", i32 2} -!23 = !{i32 2, !"Debug Info Version", i32 3} -!24 = !{!"clang version 3.8.0 (trunk 244473) (llvm/trunk 244644)"} -!25 = !DILocalVariable(name: "p1", arg: 1, scope: !4, file: !5, line: 6, type: !9) -!26 = !DIExpression() -!27 = !DILocation(line: 6, scope: !4) -!28 = !DILocation(line: 8, scope: !29) -!29 = distinct !DILexicalBlock(scope: !4, file: !5, line: 8) -!30 = !DILocation(line: 10, scope: !31) -!31 = distinct !DILexicalBlock(scope: !4, file: !5, line: 10) -!32 = !DILocation(line: 8, scope: !4) -!33 = !DILocation(line: 9, scope: !29) -!34 = !DILocation(line: 10, scope: !4) -!35 = !DILocation(line: 11, scope: !31) -!36 = !DILocation(line: 12, scope: !4) -!37 = !DILocation(line: 14, scope: !13) -!38 = !DILocation(line: 6, scope: !4, inlinedAt: !39) -!39 = distinct !DILocation(line: 15, scope: !13) -!40 = !DILocation(line: 8, scope: !29, inlinedAt: !39) -!41 = !DILocation(line: 10, scope: !31, inlinedAt: !39) -!42 = !DILocation(line: 8, scope: !4, inlinedAt: !39) -!43 = !DILocation(line: 9, scope: !29, inlinedAt: !39) -!44 = !DILocation(line: 11, scope: !31, inlinedAt: !39) -!45 = !DILocation(line: 16, scope: !13) +!7 = !{null, !8} +!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64) +!9 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) +!10 = !{!11} +!11 = !DILocalVariable(name: "p1", arg: 1, scope: !4, file: !1, line: 2, type: !8) +!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) +!13 = !DISubroutineType(types: !14) +!14 = !{null} +!15 = !{!16, !17} +!16 = !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, variable: i32* @a) +!17 = !DIGlobalVariable(name: "b", scope: !0, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, variable: i32* @b) +!18 = !{i32 2, !"Dwarf Version", i32 2} +!19 = !{i32 2, !"Debug Info Version", i32 3} +!20 = !{!"clang version 3.8.0 (trunk 245562) (llvm/trunk 245569)"} +!21 = !DIExpression() +!22 = !DILocation(line: 2, scope: !4) +!23 = !DILocation(line: 3, scope: !24) +!24 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3) +!25 = !{!26, !26, i64 0} +!26 = !{!"int", !27, i64 0} +!27 = !{!"omnipotent char", !28, i64 0} +!28 = !{!"Simple C/C++ TBAA"} +!29 = !DILocation(line: 3, scope: !4) +!30 = !DILocation(line: 4, scope: !24) +!31 = !DILocation(line: 5, scope: !32) +!32 = distinct !DILexicalBlock(scope: !4, file: !1, line: 5) +!33 = !DILocation(line: 5, scope: !4) +!34 = !DILocation(line: 6, scope: !32) +!35 = !DILocation(line: 7, scope: !4) +!36 = !DILocation(line: 5, scope: !32, inlinedAt: !37) +!37 = distinct !DILocation(line: 11, scope: !12) +!38 = !DILocation(line: 10, scope: !12) +!39 = !DILocation(line: 2, scope: !4, inlinedAt: !37) +!40 = !DILocation(line: 3, scope: !24, inlinedAt: !37) +!41 = !DILocation(line: 3, scope: !4, inlinedAt: !37) +!42 = !DILocation(line: 4, scope: !24, inlinedAt: !37) +!43 = !DILocation(line: 5, scope: !4, inlinedAt: !37) +!44 = !DILocation(line: 6, scope: !32, inlinedAt: !37) +!45 = !DILocation(line: 12, scope: !12)