1; RUN: llc < %s -mtriple=thumbv7em-arm-none-eabi -O3 2 3; When using -Oz and -g, this code generated an abort in the ARM load/store optimizer. 4 5%struct.s = type { ptr } 6 7; Function Attrs: minsize nounwind optsize readonly 8define ptr @s_idx(ptr readonly %xl) local_unnamed_addr #0 !dbg !8 { 9entry: 10 tail call void @llvm.dbg.value(metadata ptr %xl, metadata !17, metadata !18), !dbg !19 11 br label %while.cond, !dbg !20 12 13while.cond: ; preds = %while.body, %entry 14 %xl.addr.0 = phi ptr [ %xl, %entry ], [ %0, %while.body ] 15 %tobool = icmp eq ptr %xl.addr.0, null 16 br i1 %tobool, label %while.end, label %while.body 17 18while.body: ; preds = %while.cond 19 %0 = load ptr, ptr %xl.addr.0, align 4 20 tail call void @llvm.dbg.value(metadata ptr %0, metadata !17, metadata !18), !dbg !19 21 br label %while.cond 22 23while.end: ; preds = %while.cond 24 ret ptr null 25} 26 27; Function Attrs: nounwind readnone 28declare void @llvm.dbg.value(metadata, metadata, metadata) #1 29 30!llvm.dbg.cu = !{!0} 31!llvm.module.flags = !{!3, !4, !5, !6} 32 33!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 34!1 = !DIFile(filename: "test.c", directory: "/a/b/c") 35!2 = !{} 36!3 = !{i32 2, !"Dwarf Version", i32 4} 37!4 = !{i32 2, !"Debug Info Version", i32 3} 38!5 = !{i32 1, !"wchar_size", i32 4} 39!6 = !{i32 1, !"min_enum_size", i32 4} 40!7 = !{!"clang version 4.0.0 "} 41!8 = distinct !DISubprogram(name: "s_idx", scope: !1, file: !1, line: 6, type: !9, isLocal: false, isDefinition: true, scopeLine: 7, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !16) 42!9 = !DISubroutineType(types: !10) 43!10 = !{!11, !11} 44!11 = !DIDerivedType(tag: DW_TAG_typedef, name: "ezxml_t", file: !1, line: 1, baseType: !12) 45!12 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 32, align: 32) 46!13 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "s", file: !1, line: 2, size: 32, align: 32, elements: !14) 47!14 = !{!15} 48!15 = !DIDerivedType(tag: DW_TAG_member, name: "next", scope: !13, file: !1, line: 3, baseType: !11, size: 32, align: 32) 49!16 = !{!17} 50!17 = !DILocalVariable(name: "xl", arg: 1, scope: !8, file: !1, line: 6, type: !11) 51!18 = !DIExpression() 52!19 = !DILocation(line: 6, column: 27, scope: !8) 53!20 = !DILocation(line: 8, column: 5, scope: !8) 54