1; RUN: opt -S -passes=globalopt < %s | FileCheck %s 2source_filename = "struct.c" 3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 4target triple = "x86_64-unknown-linux-gnu" 5 6%struct.mystruct = type { x86_fp80, i32, [12 x i8] } 7 8; Generated from: 9; 10; static struct mystruct { 11; long double a; 12; int b; 13; } static_struct; 14; void __attribute__((nodebug)) foo(int in) { static_struct.a = in; } 15; void __attribute__((nodebug)) bar(int in) { static_struct.b = in; } 16; int main(int argc, char **argv) 17; { 18; foo(argv[0][1]); 19; bar(argv[0][1]); 20; return (static_struct.a + static_struct.b) > 0; 21; } 22; 23; using clang -O0 -g2 -S -emit-llvm 24 25@static_struct = internal global %struct.mystruct zeroinitializer, align 16, !dbg !0 26 27; CHECK: @static_struct.0 = internal unnamed_addr global x86_fp80 0xK00000000000000000000, align 16, !dbg ![[EL0:.*]] 28; CHECK: @static_struct.1 = internal unnamed_addr global i32 0, align 16, !dbg ![[EL1:.*]] 29 30; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: !DIExpression(DW_OP_LLVM_fragment, 0, 128)) 31; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "static_struct" 32; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: !DIExpression(DW_OP_LLVM_fragment, 128, 32)) 33 34; Function Attrs: noinline nounwind optnone uwtable 35define void @foo(i32 %in) #0 { 36entry: 37 %in.addr = alloca i32, align 4 38 store i32 %in, ptr %in.addr, align 4 39 %0 = load i32, ptr %in.addr, align 4 40 %conv = sitofp i32 %0 to x86_fp80 41 store x86_fp80 %conv, ptr @static_struct, align 16 42 ret void 43} 44 45; Function Attrs: noinline nounwind optnone uwtable 46define void @bar(i32 %in) #0 { 47entry: 48 %in.addr = alloca i32, align 4 49 store i32 %in, ptr %in.addr, align 4 50 %0 = load i32, ptr %in.addr, align 4 51 store i32 %0, ptr getelementptr inbounds (%struct.mystruct, ptr @static_struct, i32 0, i32 1), align 16 52 ret void 53} 54 55; Function Attrs: noinline nounwind optnone uwtable 56define i32 @main(i32 %argc, ptr %argv) #0 !dbg !16 { 57entry: 58 %retval = alloca i32, align 4 59 %argc.addr = alloca i32, align 4 60 %argv.addr = alloca ptr, align 8 61 store i32 0, ptr %retval, align 4 62 store i32 %argc, ptr %argc.addr, align 4 63 call void @llvm.dbg.declare(metadata ptr %argc.addr, metadata !22, metadata !DIExpression()), !dbg !23 64 store ptr %argv, ptr %argv.addr, align 8 65 call void @llvm.dbg.declare(metadata ptr %argv.addr, metadata !24, metadata !DIExpression()), !dbg !25 66 %0 = load ptr, ptr %argv.addr, align 8, !dbg !26 67 %1 = load ptr, ptr %0, align 8, !dbg !26 68 %arrayidx1 = getelementptr inbounds i8, ptr %1, i64 1, !dbg !26 69 %2 = load i8, ptr %arrayidx1, align 1, !dbg !26 70 %conv = sext i8 %2 to i32, !dbg !26 71 call void @foo(i32 %conv), !dbg !27 72 %3 = load ptr, ptr %argv.addr, align 8, !dbg !28 73 %4 = load ptr, ptr %3, align 8, !dbg !28 74 %arrayidx3 = getelementptr inbounds i8, ptr %4, i64 1, !dbg !28 75 %5 = load i8, ptr %arrayidx3, align 1, !dbg !28 76 %conv4 = sext i8 %5 to i32, !dbg !28 77 call void @bar(i32 %conv4), !dbg !29 78 %6 = load x86_fp80, ptr @static_struct, align 16, !dbg !30 79 %7 = load i32, ptr getelementptr inbounds (%struct.mystruct, ptr @static_struct, i32 0, i32 1), align 16, !dbg !31 80 %conv5 = sitofp i32 %7 to x86_fp80, !dbg !32 81 %add = fadd x86_fp80 %6, %conv5, !dbg !33 82 %cmp = fcmp ogt x86_fp80 %add, 0xK00000000000000000000, !dbg !34 83 %conv6 = zext i1 %cmp to i32, !dbg !34 84 ret i32 %conv6, !dbg !35 85} 86 87; Function Attrs: nounwind readnone speculatable 88declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 89 90attributes #0 = { noinline nounwind optnone uwtable } 91attributes #1 = { nounwind readnone speculatable } 92 93!llvm.dbg.cu = !{!2} 94!llvm.module.flags = !{!12, !13, !14} 95!llvm.ident = !{!15} 96 97!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 98!1 = distinct !DIGlobalVariable(name: "static_struct", scope: !2, file: !3, line: 4, type: !6, isLocal: true, isDefinition: true) 99!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) 100!3 = !DIFile(filename: "struct.c", directory: "/") 101!4 = !{} 102!5 = !{!0} 103!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "mystruct", file: !3, line: 1, size: 256, elements: !7) 104!7 = !{!8, !10} 105!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !3, line: 2, baseType: !9, size: 128) 106!9 = !DIBasicType(name: "long double", size: 128, encoding: DW_ATE_float) 107!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !3, line: 3, baseType: !11, size: 32, offset: 128) 108!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 109!12 = !{i32 2, !"Dwarf Version", i32 4} 110!13 = !{i32 2, !"Debug Info Version", i32 3} 111!14 = !{i32 1, !"wchar_size", i32 4} 112!15 = !{!"clang version 7.0.0"} 113!16 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 7, type: !17, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4) 114!17 = !DISubroutineType(types: !18) 115!18 = !{!11, !11, !19} 116!19 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !20, size: 64) 117!20 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !21, size: 64) 118!21 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 119!22 = !DILocalVariable(name: "argc", arg: 1, scope: !16, file: !3, line: 7, type: !11) 120!23 = !DILocation(line: 7, column: 14, scope: !16) 121!24 = !DILocalVariable(name: "argv", arg: 2, scope: !16, file: !3, line: 7, type: !19) 122!25 = !DILocation(line: 7, column: 27, scope: !16) 123!26 = !DILocation(line: 9, column: 9, scope: !16) 124!27 = !DILocation(line: 9, column: 5, scope: !16) 125!28 = !DILocation(line: 10, column: 9, scope: !16) 126!29 = !DILocation(line: 10, column: 5, scope: !16) 127!30 = !DILocation(line: 11, column: 27, scope: !16) 128!31 = !DILocation(line: 11, column: 45, scope: !16) 129!32 = !DILocation(line: 11, column: 31, scope: !16) 130!33 = !DILocation(line: 11, column: 29, scope: !16) 131!34 = !DILocation(line: 11, column: 48, scope: !16) 132!35 = !DILocation(line: 11, column: 5, scope: !16) 133