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1; RUN: opt -passes=inline -S < %s | FileCheck %s2; RUN: opt -passes='cgscc(inline)' -S < %s | FileCheck %s3;4 5; Make sure the inliner doesn't crash when a metadata-bridged SSA operand is an6; undominated use.7;8; If we ever add a verifier check to prevent the scenario in this file, it's9; fine to delete this testcase. However, we would need a bitcode upgrade since10; such historical IR exists in practice.11 12define i32 @foo(i32 %i) !dbg !4 {13entry:14 tail call void @llvm.dbg.value(metadata i32 %add, metadata !8, metadata !10), !dbg !1115 %add = add nsw i32 1, %i, !dbg !1216 ret i32 %add, !dbg !1317}18 19; CHECK-LABEL: define i32 @caller(20define i32 @caller(i32 %i) {21; CHECK-NEXT: entry:22entry:23; Although the inliner shouldn't crash, it can't be expected to get the24; "correct" SSA value since its assumptions have been violated.25; CHECK-NEXT: #dbg_value(i32 %add.i,26; CHECK-NEXT: %{{.*}} = add nsw27 %call = tail call i32 @foo(i32 %i)28 ret i32 %call29}30 31declare void @llvm.dbg.value(metadata, metadata, metadata)32 33!llvm.dbg.cu = !{!0}34!llvm.module.flags = !{!9}35 36!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)37!1 = !DIFile(filename: "t.c", directory: "/path/to/tests")38!2 = !{}39!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)40!5 = !DISubroutineType(types: !6)41!6 = !{!7, !7}42!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)43!8 = !DILocalVariable(name: "add", arg: 1, scope: !4, file: !1, line: 2, type: !7)44!9 = !{i32 2, !"Debug Info Version", i32 3}45!10 = !DIExpression()46!11 = !DILocation(line: 2, column: 13, scope: !4)47!12 = !DILocation(line: 2, column: 27, scope: !4)48!13 = !DILocation(line: 2, column: 18, scope: !4)49