1 ; RUN: opt -S -globalopt < %s | FileCheck %s 2 source_filename = "test.c" 3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 4 target triple = "x86_64-apple-macosx10.12.0" 5 6 %struct.mystruct = type { i32, i64 } 7 ; Generated at -Os from: 8 ; 9 ; static struct { int a; char b; } array[2]; 10 ; void __attribute__((nodebug)) foo(int in) { array[0].a = in; } 11 ; void __attribute__((nodebug)) bar(int in) { array[1].a = in; } 12 ; int main(int argc, char **argv) 13 ; { 14 ; foo(argv[0][1]); 15 ; bar(argv[0][1]); 16 ; return array[0].a + array[1].a; 17 ; } 18 19 %struct.anon = type { i32, i8 } 20 21 ; This array is first split into two struct, which are then split into their 22 ; elements, of which only .a survives. 23 @array = internal global [2 x %struct.anon] zeroinitializer, align 16, !dbg !0 24 ; CHECK: @array.0.0 = internal unnamed_addr global i32 0, align 16, !dbg ![[EL0:.*]] 25 ; CHECK: @array.1.0 = internal unnamed_addr global i32 0, align 8, !dbg ![[EL1:.*]] 26 ; 27 ; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: !DIExpression(DW_OP_LLVM_fragment, 0, 32)) 28 ; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "array" 29 ; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: !DIExpression(DW_OP_LLVM_fragment, 64, 32)) 30 31 32 ; Function Attrs: nounwind optsize ssp uwtable 33 define void @foo(i32 %in) #0 { 34 entry: 35 store i32 %in, i32* getelementptr inbounds ([2 x %struct.anon], [2 x %struct.anon]* @array, i64 0, i64 0, i32 0), align 16, !tbaa !20 36 ret void 37 } 38 39 ; Function Attrs: nounwind optsize ssp uwtable 40 define void @bar(i32 %in) #0 { 41 entry: 42 store i32 %in, i32* getelementptr inbounds ([2 x %struct.anon], [2 x %struct.anon]* @array, i64 0, i64 1, i32 0), align 8, !tbaa !20 43 ret void 44 } 45 46 ; Function Attrs: nounwind optsize ssp uwtable 47 define i32 @main(i32 %argc, i8** %argv) #0 !dbg !25 { 48 entry: 49 call void @llvm.dbg.value(metadata i32 %argc, metadata !31, metadata !33), !dbg !34 50 call void @llvm.dbg.value(metadata i8** %argv, metadata !32, metadata !33), !dbg !35 51 %0 = load i8*, i8** %argv, align 8, !dbg !36, !tbaa !37 52 %arrayidx1 = getelementptr inbounds i8, i8* %0, i64 1, !dbg !36 53 %1 = load i8, i8* %arrayidx1, align 1, !dbg !36, !tbaa !39 54 %conv = sext i8 %1 to i32, !dbg !36 55 call void @foo(i32 %conv) #2, !dbg !40 56 %2 = load i8*, i8** %argv, align 8, !dbg !41, !tbaa !37 57 %arrayidx3 = getelementptr inbounds i8, i8* %2, i64 1, !dbg !41 58 %3 = load i8, i8* %arrayidx3, align 1, !dbg !41, !tbaa !39 59 %conv4 = sext i8 %3 to i32, !dbg !41 60 call void @bar(i32 %conv4) #2, !dbg !42 61 %4 = load i32, i32* getelementptr inbounds ([2 x %struct.anon], [2 x %struct.anon]* @array, i64 0, i64 0, i32 0), align 16, !dbg !43, !tbaa !20 62 %5 = load i32, i32* getelementptr inbounds ([2 x %struct.anon], [2 x %struct.anon]* @array, i64 0, i64 1, i32 0), align 8, !dbg !44, !tbaa !20 63 %add = add nsw i32 %4, %5, !dbg !45 64 ret i32 %add, !dbg !46 65 } 66 67 ; Function Attrs: nounwind readnone speculatable 68 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 69 70 ; Function Attrs: nounwind readnone speculatable 71 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 72 73 attributes #0 = { nounwind optsize ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="penryn" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 74 attributes #1 = { nounwind readnone speculatable } 75 attributes #2 = { optsize } 76 77 !llvm.dbg.cu = !{!2} 78 !llvm.module.flags = !{!15, !16, !17, !18} 79 !llvm.ident = !{!19} 80 81 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 82 !1 = distinct !DIGlobalVariable(name: "array", scope: !2, file: !3, line: 1, type: !6, isLocal: true, isDefinition: true) 83 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 6.0.0 (trunk 309960) (llvm/trunk 309961)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) 84 !3 = !DIFile(filename: "test.c", directory: "/") 85 !4 = !{} 86 !5 = !{!0} 87 !6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 128, elements: !13) 88 !7 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !3, line: 1, size: 64, elements: !8) 89 !8 = !{!9, !11} 90 !9 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !7, file: !3, line: 1, baseType: !10, size: 32) 91 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 92 !11 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !7, file: !3, line: 1, baseType: !12, size: 8, offset: 32) 93 !12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 94 !13 = !{!14} 95 !14 = !DISubrange(count: 2) 96 !15 = !{i32 2, !"Dwarf Version", i32 4} 97 !16 = !{i32 2, !"Debug Info Version", i32 3} 98 !17 = !{i32 1, !"wchar_size", i32 4} 99 !18 = !{i32 7, !"PIC Level", i32 2} 100 !19 = !{!"clang version 6.0.0 (trunk 309960) (llvm/trunk 309961)"} 101 !20 = !{!21, !22, i64 0} 102 !21 = !{!"", !22, i64 0, !23, i64 4} 103 !22 = !{!"int", !23, i64 0} 104 !23 = !{!"omnipotent char", !24, i64 0} 105 !24 = !{!"Simple C/C++ TBAA"} 106 !25 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 4, type: !26, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !30) 107 !26 = !DISubroutineType(types: !27) 108 !27 = !{!10, !10, !28} 109 !28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !29, size: 64) 110 !29 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64) 111 !30 = !{!31, !32} 112 !31 = !DILocalVariable(name: "argc", arg: 1, scope: !25, file: !3, line: 4, type: !10) 113 !32 = !DILocalVariable(name: "argv", arg: 2, scope: !25, file: !3, line: 4, type: !28) 114 !33 = !DIExpression() 115 !34 = !DILocation(line: 4, column: 14, scope: !25) 116 !35 = !DILocation(line: 4, column: 27, scope: !25) 117 !36 = !DILocation(line: 6, column: 7, scope: !25) 118 !37 = !{!38, !38, i64 0} 119 !38 = !{!"any pointer", !23, i64 0} 120 !39 = !{!23, !23, i64 0} 121 !40 = !DILocation(line: 6, column: 3, scope: !25) 122 !41 = !DILocation(line: 7, column: 7, scope: !25) 123 !42 = !DILocation(line: 7, column: 3, scope: !25) 124 !43 = !DILocation(line: 8, column: 19, scope: !25) 125 !44 = !DILocation(line: 8, column: 32, scope: !25) 126 !45 = !DILocation(line: 8, column: 21, scope: !25) 127 !46 = !DILocation(line: 8, column: 3, scope: !25) 128
