| ; RUN: opt < %s -S -passes='speculative-execution' | FileCheck %s |
| |
| %class.B = type { ptr } |
| |
| ; Testing that two bitcasts are not hoisted to the first BB |
| define ptr @foo(ptr readonly %b) { |
| ; CHECK-LABEL: foo |
| ; CHECK-LABEL: entry |
| ; CHECK-NEXT: %i = icmp eq ptr %b, null |
| ; CHECK-NEXT: br i1 %i, label %end, label %notnull |
| entry: |
| %i = icmp eq ptr %b, null |
| br i1 %i, label %end, label %notnull |
| |
| ; CHECK-LABEL: notnull: |
| notnull: ; preds = %entry |
| %vtable = load ptr, ptr %b, align 8 |
| %i2 = getelementptr inbounds i32, ptr %vtable, i64 -2 |
| %offset.to.top = load i32, ptr %i2, align 4 |
| %i4 = sext i32 %offset.to.top to i64 |
| %i5 = getelementptr inbounds i8, ptr %b, i64 %i4 |
| br label %end |
| |
| end: ; preds = %notnull, %entry |
| %i6 = phi ptr [ %i5, %notnull ], [ null, %entry ] |
| ret ptr %i6 |
| } |
| |
| define void @f(i32 %i) { |
| entry: |
| ; CHECK-LABEL: @f( |
| ; CHECK: %a2 = add i32 %i, 0 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a2 |
| br i1 undef, label %land.rhs, label %land.end |
| |
| land.rhs: ; preds = %entry |
| ; CHECK: land.rhs: |
| ; CHECK-NEXT: call void @llvm.dbg.label |
| ; CHECK-NEXT: %y = alloca i32, align 4 |
| ; CHECK-NEXT: call void @llvm.dbg.declare(metadata ptr %y |
| ; CHECK-NEXT: %a0 = load i32, ptr undef, align 1 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 %a0 |
| call void @llvm.dbg.label(metadata !11), !dbg !10 |
| %y = alloca i32, align 4 |
| call void @llvm.dbg.declare(metadata ptr %y, metadata !14, metadata !DIExpression()), !dbg !10 |
| |
| %a0 = load i32, ptr undef, align 1 |
| call void @llvm.dbg.value(metadata i32 %a0, metadata !9, metadata !DIExpression()), !dbg !10 |
| |
| %a2 = add i32 %i, 0 |
| call void @llvm.dbg.value(metadata i32 %a2, metadata !13, metadata !DIExpression()), !dbg !10 |
| |
| br label %land.end |
| |
| land.end: ; preds = %land.rhs, %entry |
| ret void |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| declare void @llvm.dbg.label(metadata) |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) |
| |
| attributes #1 = { nounwind readnone speculatable willreturn } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!5} |
| |
| !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) |
| !1 = !DIFile(filename: "foo.c", directory: "/bar") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed) |
| !5 = !{i32 2, !"Debug Info Version", i32 3} |
| !6 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !7, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) |
| !7 = !DISubroutineType(types: !8) |
| !8 = !{null} |
| !9 = !DILocalVariable(name: "a0", scope: !6, file: !1, line: 3, type: !4) |
| !10 = !DILocation(line: 0, scope: !6) |
| !11 = !DILabel(scope: !6, name: "label", file: !1, line: 1) |
| !12 = !DILocalVariable(name: "x", scope: !6, file: !1, line: 3, type: !4) |
| !13 = !DILocalVariable(name: "a2", scope: !6, file: !1, line: 3, type: !4) |
| !14 = !DILocalVariable(name: "y", scope: !6, file: !1, line: 3, type: !4) |