Encapsulate FPOptions and use it consistently
Sema holds the current FPOptions which is adjusted by 'pragma STDC
FP_CONTRACT'. This then gets propagated into expression nodes as they are
built.
This encapsulates FPOptions so that this propagation happens opaquely rather
than directly with the fp_contractable on/off bit. This allows controlled
transitioning of fp_contractable to a ternary value (off, on, fast). It will
also allow adding more fast-math flags later.
This is toward moving fp-contraction=fast from an LLVM TargetOption to a
FastMathFlag in order to fix PR25721.
Differential Revision: https://reviews.llvm.org/D31166
llvm-svn: 298877
diff --git a/clang/lib/Serialization/ASTReaderStmt.cpp b/clang/lib/Serialization/ASTReaderStmt.cpp
index 6a4482b..a12fb8c 100644
--- a/clang/lib/Serialization/ASTReaderStmt.cpp
+++ b/clang/lib/Serialization/ASTReaderStmt.cpp
@@ -670,7 +670,7 @@
E->setRHS(Record.readSubExpr());
E->setOpcode((BinaryOperator::Opcode)Record.readInt());
E->setOperatorLoc(ReadSourceLocation());
- E->setFPContractable((bool)Record.readInt());
+ E->setFPFeatures(FPOptions(Record.readInt()));
}
void ASTStmtReader::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
@@ -1225,7 +1225,7 @@
VisitCallExpr(E);
E->Operator = (OverloadedOperatorKind)Record.readInt();
E->Range = Record.readSourceRange();
- E->setFPContractable((bool)Record.readInt());
+ E->setFPFeatures(FPOptions(Record.readInt()));
}
void ASTStmtReader::VisitCXXConstructExpr(CXXConstructExpr *E) {