1 ; RUN: opt -inline -S < %s | FileCheck %s 2 3 ; Make sure the inliner doesn't crash when a metadata-bridged SSA operand is an 4 ; undominated use. 5 ; 6 ; If we ever add a verifier check to prevent the scenario in this file, it's 7 ; fine to delete this testcase. However, we would need a bitcode upgrade since 8 ; such historical IR exists in practice. 9 10 define i32 @foo(i32 %i) !dbg !4 { 11 entry: 12 tail call void @llvm.dbg.value(metadata i32 %add, i64 0, metadata !8, metadata !10), !dbg !11 13 %add = add nsw i32 1, %i, !dbg !12 14 ret i32 %add, !dbg !13 15 } 16 17 ; CHECK-LABEL: define i32 @caller( 18 define i32 @caller(i32 %i) { 19 ; CHECK-NEXT: entry: 20 entry: 21 ; Although the inliner shouldn't crash, it can't be expected to get the 22 ; "correct" SSA value since its assumptions have been violated. 23 ; CHECK-NEXT: tail call void @llvm.dbg.value(metadata ![[EMPTY:[0-9]+]], 24 ; CHECK-NEXT: %{{.*}} = add nsw 25 %call = tail call i32 @foo(i32 %i) 26 ret i32 %call 27 } 28 29 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) 30 31 !llvm.dbg.cu = !{!0} 32 !llvm.module.flags = !{!9} 33 34 !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) 35 !1 = !DIFile(filename: "t.c", directory: "/path/to/tests") 36 37 ; CHECK: ![[EMPTY]] = !{} 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
