Un-revert r310014: false revert, it wasn't the cause of build break

llvm-svn: 310021

1 files changed, 132 insertions, 0 deletions

diff --git a/llvm/test/DebugInfo/Generic/global-sra-struct.ll b/llvm/test/DebugInfo/Generic/global-sra-struct.ll
new file mode 100644
index 00000000000..e17e8cf3cac
--- /dev/null
+++ b/llvm/test/DebugInfo/Generic/global-sra-struct.ll
@@ -0,0 +1,132 @@
+; 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 mystruct {
+;     int a;
+;     long long int b;
+; } static_struct;
+; void __attribute__((nodebug)) foo(int in) { static_struct.a = in; }
+; void __attribute__((nodebug)) bar(int in) { static_struct.b = in; }
+; int main(int argc, char **argv)
+; {
+;     foo(argv[0][1]);
+;     bar(argv[0][1]);
+;     return static_struct.a + static_struct.b;
+; }
+
+; CHECK: @static_struct.0 = internal unnamed_addr global i32 0, align 8, !dbg ![[EL0:.*]]
+; CHECK: @static_struct.1 = internal unnamed_addr global i64 0, align 8, !dbg ![[EL1:.*]]
+
+; CHECK: ![[EL0]] = !DIGlobalVariableExpression(var: ![[VAR:.*]], expr: ![[EX1:.*]])
+; CHECK: ![[VAR]] = distinct !DIGlobalVariable(name: "static_struct"
+; CHECK: ![[EX1]] = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
+; CHECK: ![[EL1]] = !DIGlobalVariableExpression(var: ![[VAR]], expr: ![[EX2:.*]])
+; CHECK: ![[EX2]] = !DIExpression(DW_OP_LLVM_fragment, 32, 64)
+
+@static_struct = internal global %struct.mystruct zeroinitializer, align 8, !dbg !0
+
+; Function Attrs: nounwind optsize ssp uwtable
+define void @foo(i32 %in) #0 {
+entry:
+  store i32 %in, i32* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 8, !tbaa !17
+  ret void
+}
+
+; Function Attrs: nounwind optsize ssp uwtable
+define void @bar(i32 %in) #0 {
+entry:
+  %conv = sext i32 %in to i64
+  store i64 %conv, i64* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 8, !tbaa !23
+  ret void
+}
+
+; Function Attrs: nounwind optsize ssp uwtable
+define i32 @main(i32 %argc, i8** %argv) #0 !dbg !24 {
+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 (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 0), align 8, !dbg !43, !tbaa !17
+  %conv5 = sext i32 %4 to i64, !dbg !44
+  %5 = load i64, i64* getelementptr inbounds (%struct.mystruct, %struct.mystruct* @static_struct, i32 0, i32 1), align 8, !dbg !45, !tbaa !23
+  %add = add nsw i64 %conv5, %5, !dbg !46
+  %conv6 = trunc i64 %add to i32, !dbg !44
+  ret i32 %conv6, !dbg !47
+}
+
+; 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 }
+attributes #1 = { nounwind readnone speculatable }
+attributes #2 = { optsize }
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!12, !13, !14, !15}
+!llvm.ident = !{!16}
+
+!0 = !DIGlobalVariableExpression(var: !1)
+!1 = distinct !DIGlobalVariable(name: "static_struct", scope: !2, file: !3, line: 4, type: !6, isLocal: true, isDefinition: true)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 6.0.0 (trunk 309852) (llvm/trunk 309850)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
+!3 = !DIFile(filename: "test.c", directory: "/")
+!4 = !{}
+!5 = !{!0}
+!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "mystruct", file: !3, line: 1, size: 128, elements: !7)
+!7 = !{!8, !10}
+!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !3, line: 2, baseType: !9, size: 32)
+!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !3, line: 3, baseType: !11, size: 64, offset: 64)
+!11 = !DIBasicType(name: "long long int", size: 64, encoding: DW_ATE_signed)
+!12 = !{i32 2, !"Dwarf Version", i32 4}
+!13 = !{i32 2, !"Debug Info Version", i32 3}
+!14 = !{i32 1, !"wchar_size", i32 4}
+!15 = !{i32 7, !"PIC Level", i32 2}
+!16 = !{!"clang version 6.0.0 (trunk 309852) (llvm/trunk 309850)"}
+!17 = !{!18, !19, i64 0}
+!18 = !{!"mystruct", !19, i64 0, !22, i64 8}
+!19 = !{!"int", !20, i64 0}
+!20 = !{!"omnipotent char", !21, i64 0}
+!21 = !{!"Simple C/C++ TBAA"}
+!22 = !{!"long long", !20, i64 0}
+!23 = !{!18, !22, i64 8}
+!24 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 7, type: !25, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !2, variables: !30)
+!25 = !DISubroutineType(types: !26)
+!26 = !{!9, !9, !27}
+!27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !28, size: 64)
+!28 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !29, size: 64)
+!29 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
+!30 = !{!31, !32}
+!31 = !DILocalVariable(name: "argc", arg: 1, scope: !24, file: !3, line: 7, type: !9)
+!32 = !DILocalVariable(name: "argv", arg: 2, scope: !24, file: !3, line: 7, type: !27)
+!33 = !DIExpression()
+!34 = !DILocation(line: 7, column: 14, scope: !24)
+!35 = !DILocation(line: 7, column: 27, scope: !24)
+!36 = !DILocation(line: 9, column: 9, scope: !24)
+!37 = !{!38, !38, i64 0}
+!38 = !{!"any pointer", !20, i64 0}
+!39 = !{!20, !20, i64 0}
+!40 = !DILocation(line: 9, column: 5, scope: !24)
+!41 = !DILocation(line: 10, column: 9, scope: !24)
+!42 = !DILocation(line: 10, column: 5, scope: !24)
+!43 = !DILocation(line: 11, column: 26, scope: !24)
+!44 = !DILocation(line: 11, column: 12, scope: !24)
+!45 = !DILocation(line: 11, column: 44, scope: !24)
+!46 = !DILocation(line: 11, column: 28, scope: !24)
+!47 = !DILocation(line: 11, column: 5, scope: !24)