forked from OSchip/llvm-project
70 lines
3.0 KiB
LLVM
70 lines
3.0 KiB
LLVM
; RUN: opt -S %s -early-cse | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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@a = global i8 25, align 1, !dbg !0
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define signext i16 @b() !dbg !12 {
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entry:
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call void @llvm.dbg.value(metadata i16 23680, metadata !17, metadata !DIExpression()), !dbg !18
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%0 = load i8, i8* @a, align 1, !dbg !19, !tbaa !20
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%conv = sext i8 %0 to i16, !dbg !19
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; CHECK: call void @llvm.dbg.value(metadata i16 undef, metadata !17, metadata !DIExpression()), !dbg !18
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; CHECK-NEXT: call i32 (...) @optimize_me_not()
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call void @llvm.dbg.value(metadata i16 %conv, metadata !17, metadata !DIExpression()), !dbg !18
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%call = call i32 (...) @optimize_me_not(), !dbg !23
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%1 = load i8, i8* @a, align 1, !dbg !24, !tbaa !20
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%conv1 = sext i8 %1 to i16, !dbg !24
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ret i16 %conv1, !dbg !25
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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declare i32 @optimize_me_not(...)
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define i32 @main() !dbg !26 {
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entry:
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%call = call signext i16 @b(), !dbg !30
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ret i32 0, !dbg !31
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8, !9, !10}
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!llvm.ident = !{!11}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: GNU)
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!3 = !DIFile(filename: "patatino.c", directory: "/Users/davide/llvm-monorepo/llvm-mono/build/bin")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 4}
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!10 = !{i32 7, !"PIC Level", i32 2}
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!11 = !{!"clang version 8.0.0 "}
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!12 = distinct !DISubprogram(name: "b", scope: !3, file: !3, line: 2, type: !13, scopeLine: 2, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !16)
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!13 = !DISubroutineType(types: !14)
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!14 = !{!15}
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!15 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
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!16 = !{!17}
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!17 = !DILocalVariable(name: "i", scope: !12, file: !3, line: 3, type: !15)
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!18 = !DILocation(line: 3, column: 9, scope: !12)
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!19 = !DILocation(line: 4, column: 7, scope: !12)
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!20 = !{!21, !21, i64 0}
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!21 = !{!"omnipotent char", !22, i64 0}
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!22 = !{!"Simple C/C++ TBAA"}
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!23 = !DILocation(line: 5, column: 3, scope: !12)
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!24 = !DILocation(line: 6, column: 10, scope: !12)
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!25 = !DILocation(line: 6, column: 3, scope: !12)
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!26 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 8, type: !27, scopeLine: 8, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4)
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!27 = !DISubroutineType(types: !28)
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!28 = !{!29}
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!29 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!30 = !DILocation(line: 8, column: 14, scope: !26)
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!31 = !DILocation(line: 8, column: 19, scope: !26)
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