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Struct-path aware TBAA: change the format of TBAAStructType node. 

We switch the order of offset and field type to make TBAAStructType node
(name, parent node, offset) similar to scalar TBAA node (name, parent node).

llvm-svn: 180653
This commit is contained in:
Manman Ren 2013-04-27 00:26:07 +00:00
parent 5a8341d6be
commit a6b7303e4c
2 changed files with 14 additions and 14 deletions
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6
clang/lib/CodeGen/CodeGenTBAA.cpp
View File

@ -57,7 +57,7 @@ llvm::MDNode *CodeGenTBAA::getRoot() {
llvm::MDNode *CodeGenTBAA::createTBAAScalarType(StringRef Name,
llvm::MDNode *Parent) {
if (CodeGenOpts.StructPathTBAA)
return MDHelper.createTBAAScalarTypeNode(Name, 0, Parent);
return MDHelper.createTBAAScalarTypeNode(Name, Parent);
else
return MDHelper.createTBAANode(Name, Parent);
}
@ -275,7 +275,7 @@ CodeGenTBAA::getTBAAStructTypeInfo(QualType QTy) {
const RecordDecl *RD = TTy->getDecl()->getDefinition();
const ASTRecordLayout &Layout = Context.getASTRecordLayout(RD);
SmallVector <std::pair<uint64_t, llvm::MDNode*>, 4> Fields;
SmallVector <std::pair<llvm::MDNode*, uint64_t>, 4> Fields;
unsigned idx = 0;
const FieldDecl *LastFD = 0;
bool IsMsStruct = RD->isMsStruct(Context);
@ -299,7 +299,7 @@ CodeGenTBAA::getTBAAStructTypeInfo(QualType QTy) {
if (!FieldNode)
return StructTypeMetadataCache[Ty] = NULL;
Fields.push_back(std::make_pair(
Layout.getFieldOffset(idx) / Context.getCharWidth(), FieldNode));
FieldNode, Layout.getFieldOffset(idx) / Context.getCharWidth()));
}
// TODO: This is using the RTTI name. Is there a better way to get

22
clang/test/CodeGen/tbaa.cpp
View File

@ -227,29 +227,29 @@ char g14(struct six *a, struct six *b) {
// CHECK: !4 = metadata !{metadata !"int", metadata !1}
// CHECK: !5 = metadata !{metadata !"short", metadata !1}
// PATH: [[TYPE_CHAR:!.*]] = metadata !{metadata !"omnipotent char", i64 0, metadata !3}
// PATH: [[TYPE_CHAR:!.*]] = metadata !{metadata !"omnipotent char", metadata !3
// PATH: [[TAG_i32]] = metadata !{metadata [[TYPE_INT:!.*]], metadata [[TYPE_INT]], i64 0}
// PATH: [[TYPE_INT]] = metadata !{metadata !"int", i64 0, metadata [[TYPE_CHAR]]}
// PATH: [[TYPE_INT]] = metadata !{metadata !"int", metadata [[TYPE_CHAR]]
// PATH: [[TAG_A_f32]] = metadata !{metadata [[TYPE_A:!.*]], metadata [[TYPE_INT]], i64 4}
// PATH: [[TYPE_A]] = metadata !{metadata !"_ZTS7StructA", i64 0, metadata [[TYPE_SHORT:!.*]], i64 4, metadata [[TYPE_INT]], i64 8, metadata [[TYPE_SHORT]], i64 12, metadata [[TYPE_INT]]}
// PATH: [[TYPE_SHORT:!.*]] = metadata !{metadata !"short", i64 0, metadata [[TYPE_CHAR]]}
// PATH: [[TYPE_A]] = metadata !{metadata !"_ZTS7StructA", metadata [[TYPE_SHORT:!.*]], i64 0, metadata [[TYPE_INT]], i64 4, metadata [[TYPE_SHORT]], i64 8, metadata [[TYPE_INT]], i64 12}
// PATH: [[TYPE_SHORT:!.*]] = metadata !{metadata !"short", metadata [[TYPE_CHAR]]
// PATH: [[TAG_A_f16]] = metadata !{metadata [[TYPE_A]], metadata [[TYPE_SHORT]], i64 0}
// PATH: [[TAG_B_a_f32]] = metadata !{metadata [[TYPE_B:!.*]], metadata [[TYPE_INT]], i64 8}
// PATH: [[TYPE_B]] = metadata !{metadata !"_ZTS7StructB", i64 0, metadata [[TYPE_SHORT]], i64 4, metadata [[TYPE_A]], i64 20, metadata [[TYPE_INT]]}
// PATH: [[TYPE_B]] = metadata !{metadata !"_ZTS7StructB", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_A]], i64 4, metadata [[TYPE_INT]], i64 20}
// PATH: [[TAG_B_a_f16]] = metadata !{metadata [[TYPE_B]], metadata [[TYPE_SHORT]], i64 4}
// PATH: [[TAG_B_f32]] = metadata !{metadata [[TYPE_B]], metadata [[TYPE_INT]], i64 20}
// PATH: [[TAG_B_a_f32_2]] = metadata !{metadata [[TYPE_B]], metadata [[TYPE_INT]], i64 16}
// PATH: [[TAG_S_f32]] = metadata !{metadata [[TYPE_S:!.*]], metadata [[TYPE_INT]], i64 4}
// PATH: [[TYPE_S]] = metadata !{metadata !"_ZTS7StructS", i64 0, metadata [[TYPE_SHORT]], i64 4, metadata [[TYPE_INT]]}
// PATH: [[TYPE_S]] = metadata !{metadata !"_ZTS7StructS", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_INT]], i64 4}
// PATH: [[TAG_S_f16]] = metadata !{metadata [[TYPE_S]], metadata [[TYPE_SHORT]], i64 0}
// PATH: [[TAG_S2_f32]] = metadata !{metadata [[TYPE_S2:!.*]], metadata [[TYPE_INT]], i64 4}
// PATH: [[TYPE_S2]] = metadata !{metadata !"_ZTS8StructS2", i64 0, metadata [[TYPE_SHORT]], i64 4, metadata [[TYPE_INT]]}
// PATH: [[TYPE_S2]] = metadata !{metadata !"_ZTS8StructS2", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_INT]], i64 4}
// PATH: [[TAG_S2_f16]] = metadata !{metadata [[TYPE_S2]], metadata [[TYPE_SHORT]], i64 0}
// PATH: [[TAG_C_b_a_f32]] = metadata !{metadata [[TYPE_C:!.*]], metadata [[TYPE_INT]], i64 12}
// PATH: [[TYPE_C]] = metadata !{metadata !"_ZTS7StructC", i64 0, metadata [[TYPE_SHORT]], i64 4, metadata [[TYPE_B]], i64 28, metadata [[TYPE_INT]]}
// PATH: [[TYPE_C]] = metadata !{metadata !"_ZTS7StructC", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_B]], i64 4, metadata [[TYPE_INT]], i64 28}
// PATH: [[TAG_D_b_a_f32]] = metadata !{metadata [[TYPE_D:!.*]], metadata [[TYPE_INT]], i64 12}
// PATH: [[TYPE_D]] = metadata !{metadata !"_ZTS7StructD", i64 0, metadata [[TYPE_SHORT]], i64 4, metadata [[TYPE_B]], i64 28, metadata [[TYPE_INT]], i64 32, metadata [[TYPE_CHAR]]}
// PATH: [[TYPE_D]] = metadata !{metadata !"_ZTS7StructD", metadata [[TYPE_SHORT]], i64 0, metadata [[TYPE_B]], i64 4, metadata [[TYPE_INT]], i64 28, metadata [[TYPE_CHAR]], i64 32}
// PATH: [[TAG_five_b]] = metadata !{metadata [[TYPE_five:!.*]], metadata [[TYPE_CHAR]], i64 1}
// PATH: [[TYPE_five]] = metadata !{metadata !"_ZTS4five", i64 0, metadata [[TYPE_CHAR]], i64 1, metadata [[TYPE_CHAR]], i64 2, metadata [[TYPE_CHAR]]}
// PATH: [[TYPE_five]] = metadata !{metadata !"_ZTS4five", metadata [[TYPE_CHAR]], i64 0, metadata [[TYPE_CHAR]], i64 1, metadata [[TYPE_CHAR]], i64 2}
// PATH: [[TAG_six_b]] = metadata !{metadata [[TYPE_six:!.*]], metadata [[TYPE_CHAR]], i64 4}
// PATH: [[TYPE_six]] = metadata !{metadata !"_ZTS3six", i64 0, metadata [[TYPE_CHAR]], i64 4, metadata [[TYPE_INT]], i64 4, metadata [[TYPE_CHAR]], i64 5, metadata [[TYPE_CHAR]]}
// PATH: [[TYPE_six]] = metadata !{metadata !"_ZTS3six", metadata [[TYPE_CHAR]], i64 0, metadata [[TYPE_INT]], i64 4, metadata [[TYPE_CHAR]], i64 4, metadata [[TYPE_CHAR]], i64 5}