1; RUN: opt -passes=inline -S < %s | FileCheck %s 2; RUN: opt -passes='cgscc(inline)' -S < %s | FileCheck %s 3; 4; RUN: opt -passes=inline -S < %s --try-experimental-debuginfo-iterators | FileCheck %s 5 6; Make sure the inliner doesn't crash when a metadata-bridged SSA operand is an 7; undominated use. 8; 9; If we ever add a verifier check to prevent the scenario in this file, it's 10; fine to delete this testcase. However, we would need a bitcode upgrade since 11; such historical IR exists in practice. 12 13define i32 @foo(i32 %i) !dbg !4 { 14entry: 15 tail call void @llvm.dbg.value(metadata i32 %add, metadata !8, metadata !10), !dbg !11 16 %add = add nsw i32 1, %i, !dbg !12 17 ret i32 %add, !dbg !13 18} 19 20; CHECK-LABEL: define i32 @caller( 21define i32 @caller(i32 %i) { 22; CHECK-NEXT: entry: 23entry: 24; Although the inliner shouldn't crash, it can't be expected to get the 25; "correct" SSA value since its assumptions have been violated. 26; CHECK-NEXT: #dbg_value(i32 %add.i, 27; CHECK-NEXT: %{{.*}} = add nsw 28 %call = tail call i32 @foo(i32 %i) 29 ret i32 %call 30} 31 32declare void @llvm.dbg.value(metadata, metadata, metadata) 33 34!llvm.dbg.cu = !{!0} 35!llvm.module.flags = !{!9} 36 37!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 265634) (llvm/trunk 265637)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 38!1 = !DIFile(filename: "t.c", directory: "/path/to/tests") 39!2 = !{} 40!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0) 41!5 = !DISubroutineType(types: !6) 42!6 = !{!7, !7} 43!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 44!8 = !DILocalVariable(name: "add", arg: 1, scope: !4, file: !1, line: 2, type: !7) 45!9 = !{i32 2, !"Debug Info Version", i32 3} 46!10 = !DIExpression() 47!11 = !DILocation(line: 2, column: 13, scope: !4) 48!12 = !DILocation(line: 2, column: 27, scope: !4) 49!13 = !DILocation(line: 2, column: 18, scope: !4) 50