forked from OSchip/llvm-project
128 lines
6.3 KiB
LLVM
128 lines
6.3 KiB
LLVM
; RUN: opt -S -globalopt < %s | FileCheck %s
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source_filename = "test.c"
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.12.0"
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%struct.mystruct = type { i32, i64 }
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; Generated at -Os from:
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;
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; static struct { int a; char b; } array[2];
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; void __attribute__((nodebug)) foo(int in) { array[0].a = in; }
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; void __attribute__((nodebug)) bar(int in) { array[1].a = in; }
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; int main(int argc, char **argv)
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; {
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; foo(argv[0][1]);
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; bar(argv[0][1]);
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; return array[0].a + array[1].a;
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; }
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%struct.anon = type { i32, i8 }
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; This array is first split into two struct, which are then split into their
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; elements, of which only .a survives.
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@array = internal global [2 x %struct.anon] zeroinitializer, align 16, !dbg !0
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; CHECK: @array.0.0 = internal unnamed_addr global i32 0, align 16, !dbg ![[EL0:.*]]
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; CHECK: @array.1.0 = internal unnamed_addr global i32 0, align 8, !dbg ![[EL1:.*]]
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;
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; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: !DIExpression(DW_OP_LLVM_fragment, 0, 32))
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; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "array"
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; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: !DIExpression(DW_OP_LLVM_fragment, 64, 32))
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; Function Attrs: nounwind optsize ssp uwtable
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define void @foo(i32 %in) #0 {
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entry:
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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
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ret void
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}
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; Function Attrs: nounwind optsize ssp uwtable
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define void @bar(i32 %in) #0 {
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entry:
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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
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ret void
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}
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; Function Attrs: nounwind optsize ssp uwtable
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define i32 @main(i32 %argc, i8** %argv) #0 !dbg !25 {
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entry:
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call void @llvm.dbg.value(metadata i32 %argc, metadata !31, metadata !33), !dbg !34
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call void @llvm.dbg.value(metadata i8** %argv, metadata !32, metadata !33), !dbg !35
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%0 = load i8*, i8** %argv, align 8, !dbg !36, !tbaa !37
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%arrayidx1 = getelementptr inbounds i8, i8* %0, i64 1, !dbg !36
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%1 = load i8, i8* %arrayidx1, align 1, !dbg !36, !tbaa !39
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%conv = sext i8 %1 to i32, !dbg !36
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call void @foo(i32 %conv) #2, !dbg !40
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%2 = load i8*, i8** %argv, align 8, !dbg !41, !tbaa !37
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%arrayidx3 = getelementptr inbounds i8, i8* %2, i64 1, !dbg !41
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%3 = load i8, i8* %arrayidx3, align 1, !dbg !41, !tbaa !39
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%conv4 = sext i8 %3 to i32, !dbg !41
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call void @bar(i32 %conv4) #2, !dbg !42
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%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
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%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
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%add = add nsw i32 %4, %5, !dbg !45
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ret i32 %add, !dbg !46
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { nounwind optsize ssp uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "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" }
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attributes #1 = { nounwind readnone speculatable }
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attributes #2 = { optsize }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!15, !16, !17, !18}
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!llvm.ident = !{!19}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "array", scope: !2, file: !3, line: 1, type: !6, isLocal: true, isDefinition: true)
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!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)
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!3 = !DIFile(filename: "test.c", directory: "/")
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!4 = !{}
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!5 = !{!0}
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!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 128, elements: !13)
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!7 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !3, line: 1, size: 64, elements: !8)
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!8 = !{!9, !11}
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!9 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !7, file: !3, line: 1, baseType: !10, size: 32)
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !7, file: !3, line: 1, baseType: !12, size: 8, offset: 32)
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!12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!13 = !{!14}
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!14 = !DISubrange(count: 2)
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!15 = !{i32 2, !"Dwarf Version", i32 4}
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!16 = !{i32 2, !"Debug Info Version", i32 3}
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!17 = !{i32 1, !"wchar_size", i32 4}
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!18 = !{i32 7, !"PIC Level", i32 2}
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!19 = !{!"clang version 6.0.0 (trunk 309960) (llvm/trunk 309961)"}
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!20 = !{!21, !22, i64 0}
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!21 = !{!"", !22, i64 0, !23, i64 4}
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!22 = !{!"int", !23, i64 0}
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!23 = !{!"omnipotent char", !24, i64 0}
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!24 = !{!"Simple C/C++ TBAA"}
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!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)
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!26 = !DISubroutineType(types: !27)
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!27 = !{!10, !10, !28}
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!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !29, size: 64)
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!29 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
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!30 = !{!31, !32}
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!31 = !DILocalVariable(name: "argc", arg: 1, scope: !25, file: !3, line: 4, type: !10)
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!32 = !DILocalVariable(name: "argv", arg: 2, scope: !25, file: !3, line: 4, type: !28)
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!33 = !DIExpression()
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!34 = !DILocation(line: 4, column: 14, scope: !25)
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!35 = !DILocation(line: 4, column: 27, scope: !25)
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!36 = !DILocation(line: 6, column: 7, scope: !25)
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!37 = !{!38, !38, i64 0}
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!38 = !{!"any pointer", !23, i64 0}
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!39 = !{!23, !23, i64 0}
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!40 = !DILocation(line: 6, column: 3, scope: !25)
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!41 = !DILocation(line: 7, column: 7, scope: !25)
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!42 = !DILocation(line: 7, column: 3, scope: !25)
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!43 = !DILocation(line: 8, column: 19, scope: !25)
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!44 = !DILocation(line: 8, column: 32, scope: !25)
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!45 = !DILocation(line: 8, column: 21, scope: !25)
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!46 = !DILocation(line: 8, column: 3, scope: !25)
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