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