1 ; RUN: opt -inline -S < %s | FileCheck %s 2 ; RUN: opt -passes='cgscc(inline)' -S < %s | FileCheck %s 3 4 ; Make sure the inliner doesn't crash when a metadata-bridged SSA operand is an 5 ; undominated use. 6 ; 7 ; If we ever add a verifier check to prevent the scenario in this file, it's 8 ; fine to delete this testcase. However, we would need a bitcode upgrade since 9 ; such historical IR exists in practice. 10 11 define i32 @foo(i32 %i) !dbg !4 { 12 entry: 13 tail call void @llvm.dbg.value(metadata i32 %add, metadata !8, metadata !10), !dbg !11 14 %add = add nsw i32 1, %i, !dbg !12 15 ret i32 %add, !dbg !13 16 } 17 18 ; CHECK-LABEL: define i32 @caller( 19 define i32 @caller(i32 %i) { 20 ; CHECK-NEXT: entry: 21 entry: 22 ; Although the inliner shouldn't crash, it can't be expected to get the 23 ; "correct" SSA value since its assumptions have been violated. 24 ; CHECK-NEXT: tail call void @llvm.dbg.value(metadata ![[EMPTY:[0-9]+]], 25 ; CHECK-NEXT: %{{.*}} = add nsw 26 %call = tail call i32 @foo(i32 %i) 27 ret i32 %call 28 } 29 30 declare void @llvm.dbg.value(metadata, metadata, metadata) 31 32 !llvm.dbg.cu = !{!0} 33 !llvm.module.flags = !{!9} 34 35 !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) 36 !1 = !DIFile(filename: "t.c", directory: "/path/to/tests") 37 38 ; CHECK: ![[EMPTY]] = !{} 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
