94 lines
3.7 KiB
LLVM
94 lines
3.7 KiB
LLVM
; RUN: opt < %s -S -speculative-execution | FileCheck %s
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; RUN: opt < %s -S -passes='speculative-execution' | FileCheck %s
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%class.B = type { i32 (...)** }
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; Testing that two bitcasts are not hoisted to the first BB
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define i8* @foo(%class.B* readonly %b) {
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; CHECK-LABEL: foo
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; CHECK-LABEL: entry
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; CHECK-NEXT: %i = icmp eq %class.B* %b, null
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; CHECK-NEXT: br i1 %i, label %end, label %notnull
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entry:
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%i = icmp eq %class.B* %b, null
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br i1 %i, label %end, label %notnull
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; CHECK-LABEL: notnull:
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; CHECK-NEXT: %i1 = bitcast %class.B* %b to i32**
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; CHECK: %i3 = bitcast %class.B* %b to i8*
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notnull: ; preds = %entry
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%i1 = bitcast %class.B* %b to i32**
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%vtable = load i32*, i32** %i1, align 8
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%i2 = getelementptr inbounds i32, i32* %vtable, i64 -2
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%offset.to.top = load i32, i32* %i2, align 4
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%i3 = bitcast %class.B* %b to i8*
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%i4 = sext i32 %offset.to.top to i64
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%i5 = getelementptr inbounds i8, i8* %i3, i64 %i4
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br label %end
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end: ; preds = %notnull, %entry
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%i6 = phi i8* [ %i5, %notnull ], [ null, %entry ]
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ret i8* %i6
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}
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define void @f(i32 %i) {
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entry:
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; CHECK-LABEL: @f(
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; CHECK: %a2 = add i32 %i, 0
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a2
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br i1 undef, label %land.rhs, label %land.end
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land.rhs: ; preds = %entry
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; CHECK: land.rhs:
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; CHECK-NEXT: call void @llvm.dbg.label
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; CHECK-NEXT: %x = alloca i32, align 4
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; CHECK-NEXT: call void @llvm.dbg.addr(metadata i32* %x
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; CHECK-NEXT: %y = alloca i32, align 4
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; CHECK-NEXT: call void @llvm.dbg.declare(metadata i32* %y
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; CHECK-NEXT: %a0 = load i32, i32* undef, align 1
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; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a0
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call void @llvm.dbg.label(metadata !11), !dbg !10
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%x = alloca i32, align 4
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call void @llvm.dbg.addr(metadata i32* %x, metadata !12, metadata !DIExpression()), !dbg !10
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%y = alloca i32, align 4
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call void @llvm.dbg.declare(metadata i32* %y, metadata !14, metadata !DIExpression()), !dbg !10
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%a0 = load i32, i32* undef, align 1
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call void @llvm.dbg.value(metadata i32 %a0, metadata !9, metadata !DIExpression()), !dbg !10
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%a2 = add i32 %i, 0
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call void @llvm.dbg.value(metadata i32 %a2, metadata !13, metadata !DIExpression()), !dbg !10
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br label %land.end
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land.end: ; preds = %land.rhs, %entry
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ret void
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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) #1
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declare void @llvm.dbg.label(metadata)
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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declare void @llvm.dbg.addr(metadata, metadata, metadata)
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attributes #1 = { nounwind readnone speculatable willreturn }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "foo.c", directory: "/bar")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
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!5 = !{i32 2, !"Debug Info Version", i32 3}
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!6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !7, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{null}
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!9 = !DILocalVariable(name: "a0", scope: !6, file: !1, line: 3, type: !4)
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!10 = !DILocation(line: 0, scope: !6)
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!11 = !DILabel(scope: !6, name: "label", file: !1, line: 1)
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!12 = !DILocalVariable(name: "x", scope: !6, file: !1, line: 3, type: !4)
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!13 = !DILocalVariable(name: "a2", scope: !6, file: !1, line: 3, type: !4)
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!14 = !DILocalVariable(name: "y", scope: !6, file: !1, line: 3, type: !4)
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