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1; RUN: llc < %s -mtriple=thumbv7em-arm-none-eabi -O32 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 readonly8define 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 !1911 br label %while.cond, !dbg !2012 13while.cond: ; preds = %while.body, %entry14 %xl.addr.0 = phi ptr [ %xl, %entry ], [ %0, %while.body ]15 %tobool = icmp eq ptr %xl.addr.0, null16 br i1 %tobool, label %while.end, label %while.body17 18while.body: ; preds = %while.cond19 %0 = load ptr, ptr %xl.addr.0, align 420 tail call void @llvm.dbg.value(metadata ptr %0, metadata !17, metadata !18), !dbg !1921 br label %while.cond22 23while.end: ; preds = %while.cond24 ret ptr null25}26 27; Function Attrs: nounwind readnone28declare void @llvm.dbg.value(metadata, metadata, metadata) #129 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