1 files changed, 129 insertions, 0 deletions
diff --git a/llvm/test/DebugInfo/Generic/global-sra-array.ll b/llvm/test/DebugInfo/Generic/global-sra-array.ll
new file mode 100644
index 00000000000..e48ee7479e6
--- /dev/null
+++ b/llvm/test/DebugInfo/Generic/global-sra-array.ll
@@ -0,0 +1,129 @@
+; RUN: opt -S -globalopt < %s | FileCheck %s
+source_filename = "test.c"
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-apple-macosx10.12.0"
+
+%struct.mystruct = type { i32, i64 }
+; Generated at -Os from:
+;
+; static struct { int a; char b; } array[2];
+; void __attribute__((nodebug)) foo(int in) { array[0].a = in; }
+; void __attribute__((nodebug)) bar(int in) { array[1].a = in; }
+; int main(int argc, char **argv)
+; {
+;   foo(argv[0][1]);
+;   bar(argv[0][1]);
+;   return array[0].a + array[1].a;
+; }
+
+%struct.anon = type { i32, i8 }
+
+; This array is first split into two struct, which are then split into their
+; elements, of which only .a survives.
+@array = internal global [2 x %struct.anon] zeroinitializer, align 16, !dbg !0
+; CHECK: @array.0.0 = internal unnamed_addr global i32 0, align 16, !dbg ![[EL0:.*]]
+; CHECK: @array.1.0 = internal unnamed_addr global i32 0, align 8, !dbg ![[EL1:.*]]
+;
+; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: ![[EX1:.*]])
+; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "array"
+; CHECK: ![[EX1]] = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
+; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: ![[EX2:.*]])
+; CHECK: ![[EX2]] = !DIExpression(DW_OP_LLVM_fragment, 64, 32)
+
+
+; Function Attrs: nounwind optsize ssp uwtable
+define void @foo(i32 %in) #0 {
+entry:
+  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
+  ret void
+}
+
+; Function Attrs: nounwind optsize ssp uwtable
+define void @bar(i32 %in) #0 {
+entry:
+  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
+  ret void
+}
+
+; Function Attrs: nounwind optsize ssp uwtable
+define i32 @main(i32 %argc, i8** %argv) #0 !dbg !25 {
+entry:
+  call void @llvm.dbg.value(metadata i32 %argc, metadata !31, metadata !33), !dbg !34
+  call void @llvm.dbg.value(metadata i8** %argv, metadata !32, metadata !33), !dbg !35
+  %0 = load i8*, i8** %argv, align 8, !dbg !36, !tbaa !37
+  %arrayidx1 = getelementptr inbounds i8, i8* %0, i64 1, !dbg !36
+  %1 = load i8, i8* %arrayidx1, align 1, !dbg !36, !tbaa !39
+  %conv = sext i8 %1 to i32, !dbg !36
+  call void @foo(i32 %conv) #2, !dbg !40
+  %2 = load i8*, i8** %argv, align 8, !dbg !41, !tbaa !37
+  %arrayidx3 = getelementptr inbounds i8, i8* %2, i64 1, !dbg !41
+  %3 = load i8, i8* %arrayidx3, align 1, !dbg !41, !tbaa !39
+  %conv4 = sext i8 %3 to i32, !dbg !41
+  call void @bar(i32 %conv4) #2, !dbg !42
+  %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
+  %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
+  %add = add nsw i32 %4, %5, !dbg !45
+  ret i32 %add, !dbg !46
+}
+
+; Function Attrs: nounwind readnone speculatable
+declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
+
+; Function Attrs: nounwind readnone speculatable
+declare void @llvm.dbg.value(metadata, metadata, metadata) #1
+
+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" }
+attributes #1 = { nounwind readnone speculatable }
+attributes #2 = { optsize }
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!15, !16, !17, !18}
+!llvm.ident = !{!19}
+
+!0 = !DIGlobalVariableExpression(var: !1)
+!1 = distinct !DIGlobalVariable(name: "array", scope: !2, file: !3, line: 1, type: !6, isLocal: true, isDefinition: true)
+!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)
+!3 = !DIFile(filename: "test.c", directory: "/")
+!4 = !{}
+!5 = !{!0}
+!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 128, elements: !13)
+!7 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !3, line: 1, size: 64, elements: !8)
+!8 = !{!9, !11}
+!9 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !7, file: !3, line: 1, baseType: !10, size: 32)
+!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!11 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !7, file: !3, line: 1, baseType: !12, size: 8, offset: 32)
+!12 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
+!13 = !{!14}
+!14 = !DISubrange(count: 2)
+!15 = !{i32 2, !"Dwarf Version", i32 4}
+!16 = !{i32 2, !"Debug Info Version", i32 3}
+!17 = !{i32 1, !"wchar_size", i32 4}
+!18 = !{i32 7, !"PIC Level", i32 2}
+!19 = !{!"clang version 6.0.0 (trunk 309960) (llvm/trunk 309961)"}
+!20 = !{!21, !22, i64 0}
+!21 = !{!"", !22, i64 0, !23, i64 4}
+!22 = !{!"int", !23, i64 0}
+!23 = !{!"omnipotent char", !24, i64 0}
+!24 = !{!"Simple C/C++ TBAA"}
+!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, variables: !30)
+!26 = !DISubroutineType(types: !27)
+!27 = !{!10, !10, !28}
+!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !29, size: 64)
+!29 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
+!30 = !{!31, !32}
+!31 = !DILocalVariable(name: "argc", arg: 1, scope: !25, file: !3, line: 4, type: !10)
+!32 = !DILocalVariable(name: "argv", arg: 2, scope: !25, file: !3, line: 4, type: !28)
+!33 = !DIExpression()
+!34 = !DILocation(line: 4, column: 14, scope: !25)
+!35 = !DILocation(line: 4, column: 27, scope: !25)
+!36 = !DILocation(line: 6, column: 7, scope: !25)
+!37 = !{!38, !38, i64 0}
+!38 = !{!"any pointer", !23, i64 0}
+!39 = !{!23, !23, i64 0}
+!40 = !DILocation(line: 6, column: 3, scope: !25)
+!41 = !DILocation(line: 7, column: 7, scope: !25)
+!42 = !DILocation(line: 7, column: 3, scope: !25)
+!43 = !DILocation(line: 8, column: 19, scope: !25)
+!44 = !DILocation(line: 8, column: 32, scope: !25)
+!45 = !DILocation(line: 8, column: 21, scope: !25)
+!46 = !DILocation(line: 8, column: 3, scope: !25)