| ; REQUIRES: asserts |
| ; RUN: opt < %s -globalopt -stats -disable-output 2>&1 | FileCheck %s |
| ; CHECK: 1 globalopt - Number of global vars shrunk to booleans |
| |
| @Stop = internal global i32 0 ; <i32*> [#uses=3] |
| |
| define i32 @foo(i32 %i) nounwind ssp { |
| entry: |
| %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| call void @llvm.dbg.value(metadata i32 %i, i64 0, metadata !3, metadata !{}) |
| %0 = icmp eq i32 %i, 1, !dbg !7 ; <i1> [#uses=1] |
| br i1 %0, label %bb, label %bb1, !dbg !7 |
| |
| bb: ; preds = %entry |
| store i32 0, i32* @Stop, align 4, !dbg !9 |
| %1 = mul nsw i32 %i, 42, !dbg !10 ; <i32> [#uses=1] |
| call void @llvm.dbg.value(metadata i32 %1, i64 0, metadata !3, metadata !{}), !dbg !10 |
| br label %bb2, !dbg !10 |
| |
| bb1: ; preds = %entry |
| store i32 1, i32* @Stop, align 4, !dbg !11 |
| br label %bb2, !dbg !11 |
| |
| bb2: ; preds = %bb1, %bb |
| %i_addr.0 = phi i32 [ %1, %bb ], [ %i, %bb1 ] ; <i32> [#uses=1] |
| br label %return, !dbg !12 |
| |
| return: ; preds = %bb2 |
| ret i32 %i_addr.0, !dbg !12 |
| } |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone |
| |
| define i32 @bar() nounwind ssp { |
| entry: |
| %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] |
| %0 = load i32, i32* @Stop, align 4, !dbg !13 ; <i32> [#uses=1] |
| %1 = icmp eq i32 %0, 1, !dbg !13 ; <i1> [#uses=1] |
| br i1 %1, label %bb, label %bb1, !dbg !13 |
| |
| bb: ; preds = %entry |
| br label %bb2, !dbg !18 |
| |
| bb1: ; preds = %entry |
| br label %bb2, !dbg !19 |
| |
| bb2: ; preds = %bb1, %bb |
| %.0 = phi i32 [ 0, %bb ], [ 1, %bb1 ] ; <i32> [#uses=1] |
| br label %return, !dbg !19 |
| |
| return: ; preds = %bb2 |
| ret i32 %.0, !dbg !19 |
| } |
| |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone |
| |
| !llvm.dbg.cu = !{!1} |
| !0 = !DIGlobalVariable(name: "Stop", line: 2, isLocal: true, isDefinition: true, scope: !1, file: !1, type: !2, variable: i32* @Stop) |
| !1 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: FullDebug, file: !20, enums: !21, retainedTypes: !21, globals: !{!0}) |
| !2 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !3 = !DILocalVariable(name: "i", line: 4, arg: 1, scope: !4, file: !1, type: !2) |
| !4 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 4, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !1, scope: !1, type: !5) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!2, !2} |
| !7 = !DILocation(line: 5, scope: !8) |
| !8 = distinct !DILexicalBlock(line: 0, column: 0, file: !20, scope: !4) |
| !9 = !DILocation(line: 6, scope: !8) |
| !10 = !DILocation(line: 7, scope: !8) |
| !11 = !DILocation(line: 9, scope: !8) |
| !12 = !DILocation(line: 11, scope: !8) |
| !13 = !DILocation(line: 14, scope: !14) |
| !14 = distinct !DILexicalBlock(line: 0, column: 0, file: !20, scope: !15) |
| !15 = distinct !DISubprogram(name: "bar", linkageName: "bar", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !1, scope: !1, type: !16) |
| !16 = !DISubroutineType(types: !17) |
| !17 = !{!2} |
| !18 = !DILocation(line: 15, scope: !14) |
| !19 = !DILocation(line: 16, scope: !14) |
| !20 = !DIFile(filename: "g.c", directory: "/tmp") |
| !21 = !{i32 0} |