forked from OSchip/llvm-project
72 lines
3.1 KiB
LLVM
72 lines
3.1 KiB
LLVM
; RUN: opt < %s -S -inline | FileCheck %s
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; RUN: opt < %s -S -strip-debug -inline | FileCheck %s
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; https://bugs.llvm.org/show_bug.cgi?id=43291
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; The purpose of this test is to check if there is use_empty in the inner loop when scanning
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; blocks of allocas, if the alloca is use_empty, skip it when allocas inlining.
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define void @foo(i16 %k) !dbg !6 {
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call void @llvm.dbg.value(metadata i16 %k, metadata !14, metadata !DIExpression()), !dbg !15
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%alloca_a = alloca i32
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call void @llvm.dbg.value(metadata i16 %k, metadata !14, metadata !DIExpression()), !dbg !15
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%alloca_b = alloca [3 x i32]
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call void @llvm.dbg.value(metadata i16 %k, metadata !14, metadata !DIExpression()), !dbg !15
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%alloca_c = alloca i32
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call void @llvm.dbg.value(metadata i16 %k, metadata !14, metadata !DIExpression()), !dbg !15
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%alloca_a..1 = bitcast i32* %alloca_a to i8**, !dbg !16
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%alloca_c..1 = bitcast i32* %alloca_c to i8**, !dbg !16
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%_tmp23 = icmp ne i16 %k, 0
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br i1 %_tmp23, label %bb1, label %bb2
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bb1: ; preds = %0
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%_tmp28 = getelementptr [3 x i32], [3 x i32]* %alloca_b, i16 0, i64 0
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store i32 0, i32* %_tmp28
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br label %bb2
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bb2: ; preds = %bb1, %0
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ret void
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}
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define i16 @bar() !dbg !17 {
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; CHECK-LABEL: bar
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; CHECK: %alloca_a.i = alloca i32
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; CHECK-NOT: %alloca_b.i = alloca [3 x i32]
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; CHECK: %alloca_c.i = alloca i32
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call void @foo(i16 0), !dbg !20
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br label %bb1
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bb1: ; preds = %0
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ret i16 0
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}
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; Function Attrs: nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata) #0
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attributes #0 = { nounwind readnone speculatable willreturn }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "Foo", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2)
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!1 = !DIFile(filename: "foo2.c", directory: "/tmp")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{!"Foo"}
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!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 17, type: !7, scopeLine: 17, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9, !13}
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!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "int64_t", file: !10, line: 76, baseType: !11)
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!10 = !DIFile(filename: "stdint.h", directory: "/tmp")
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!11 = !DIDerivedType(tag: DW_TAG_typedef, name: "__i64_t", file: !1, baseType: !12)
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!12 = !DIBasicType(name: "signed long long", size: 64, encoding: DW_ATE_signed)
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!13 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
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!14 = !DILocalVariable(name: "k", arg: 1, scope: !6, file: !1, line: 17, type: !13)
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!15 = !DILocation(line: 0, scope: !6)
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!16 = !DILocation(line: 19, column: 3, scope: !6)
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!17 = distinct !DISubprogram(name: "g", scope: !1, file: !1, line: 8, type: !18, scopeLine: 8, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!18 = !DISubroutineType(types: !19)
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!19 = !{!13}
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!20 = !DILocation(line: 8, column: 7, scope: !17)
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