b48450c209
I noticed that when we determine the size of the function to figure out if its profitable, we include debug instructions which can end up making larger functions than necessary.
62 lines
2.9 KiB
LLVM
62 lines
2.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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;; Make sure debug instructions are not counted when deciding to merge functions
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; RUN: opt -S -passes=mergefunc < %s | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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; Function Attrs: nounwind readnone
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define hidden i32 @f(i32 %t) {
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; CHECK-LABEL: define hidden i32 @f
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; CHECK-SAME: (i32 [[T:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[T]], metadata [[META6:![0-9]+]], metadata !DIExpression()), !dbg [[DBG12:![0-9]+]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[T]], metadata [[META6]], metadata !DIExpression()), !dbg [[DBG12]]
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; CHECK-NEXT: ret i32 0
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;
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entry:
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call void @llvm.dbg.value(metadata i32 %t, metadata !12, metadata !DIExpression()), !dbg !13
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call void @llvm.dbg.value(metadata i32 %t, metadata !12, metadata !DIExpression()), !dbg !13
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ret i32 0
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}
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; Function Attrs: nounwind readnone
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define hidden i32 @f_thunk(i32 %t) {
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; CHECK-LABEL: define hidden i32 @f_thunk
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; CHECK-SAME: (i32 [[T:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[T]], metadata [[META6]], metadata !DIExpression()), !dbg [[DBG12]]
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[T]], metadata [[META6]], metadata !DIExpression()), !dbg [[DBG12]]
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; CHECK-NEXT: ret i32 0
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;
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entry:
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call void @llvm.dbg.value(metadata i32 %t, metadata !12, metadata !DIExpression()), !dbg !13
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call void @llvm.dbg.value(metadata i32 %t, metadata !12, metadata !DIExpression()), !dbg !13
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ret i32 0
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "no-merge-debug-thunks.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 = !{i32 1, !"wchar_size", i32 4}
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!7 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12}
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!12 = !DILocalVariable(name: "t", arg: 1, scope: !7, file: !1, line: 3, type: !10)
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!13 = !DILocation(line: 3, column: 14, scope: !7)
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!14 = !DILocation(line: 4, column: 12, scope: !7)
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!16 = distinct !DISubprogram(name: "_start", scope: !1, file: !1, line: 7, type: !17, isLocal: false, isDefinition: true, scopeLine: 7, isOptimized: true, unit: !0, retainedNodes: !2)
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!17 = !DISubroutineType(types: !18)
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!18 = !{!10}
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!19 = !DILocation(line: 8, column: 3, scope: !16)
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!20 = !DILocation(line: 9, column: 3, scope: !16)
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