forked from OSchip/llvm-project
38 lines
1.3 KiB
LLVM
38 lines
1.3 KiB
LLVM
; RUN: llc -O0 < %s -mtriple=x86_64-unknown | FileCheck %s
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; This was extracted from a swift debugger stepping testcase and checks that the
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; fold (zext (load x)) -> (zext (truncate (zextload x)))
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; rule propagates the SDLoc of the load to the zextload.
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; CHECK: .loc {{.*}} main.swift:100
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; CHECK-NOT: .loc
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; CHECK: .loc {{.*}} main.swift:200
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; CHECK-NOT: .loc
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; CHECK: .loc {{.*}} main.swift:300
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; CHECK-NOT: .loc
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declare void @foo(double)
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define i32 @zext_load(i32* %arg) !dbg !30 {
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%1 = bitcast i32* %arg to i8*
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%2 = getelementptr inbounds i8, i8* %1, i32 1
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%3 = load i8, i8* %2, align 1, !dbg !100
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%4 = uitofp i8 %3 to double, !dbg !200
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call void @foo(double %4), !dbg !200
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%5 = zext i8 %3 to i32, !dbg !300
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ret i32 %5
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}
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!llvm.dbg.cu = !{!1}
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!llvm.module.flags = !{!0}
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!0 = !{i32 2, !"Debug Info Version", i32 3}
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!1 = distinct !DICompileUnit(language: DW_LANG_Swift, file: !3, isOptimized: false, emissionKind: FullDebug)
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!2 = !DIModule(scope: null, name: "test", includePath: "")
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!3 = !DIFile(filename: "main.swift", directory: "/")
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!30 = distinct !DISubprogram(name: "main", scope: !2, file: !3, line: 1, type: !31, isLocal: false, isDefinition: true, isOptimized: false, unit: !1)
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!31 = !DISubroutineType(types: !32)
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!32 = !{}
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!100 = !DILocation(line: 100, scope: !30)
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!200 = !DILocation(line: 200, scope: !30)
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!300 = !DILocation(line: 300, scope: !30)
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