Add codegen support for a few more kinds of initializer constant
expressions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51677 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprConstant.cpp b/lib/CodeGen/CGExprConstant.cpp
index a0484bc..a642fd2 100644
--- a/lib/CodeGen/CGExprConstant.cpp
+++ b/lib/CodeGen/CGExprConstant.cpp
@@ -296,6 +296,10 @@
static_cast<uint32_t>(CGM.getContext().getTypeSize(E->getType()));
return llvm::ConstantInt::get(llvm::APInt(ResultWidth, Val));
}
+
+ llvm::Constant *VisitUnaryExtension(const UnaryOperator *E) {
+ return Visit(E->getSubExpr());
+ }
// Binary operators
llvm::Constant *VisitBinOr(const BinaryOperator *E) {
@@ -380,6 +384,37 @@
return llvm::ConstantExpr::getAnd(LHS, RHS);
}
+
+ llvm::Constant *VisitBinNE(const BinaryOperator *E) {
+ llvm::Constant *LHS = Visit(E->getLHS());
+ llvm::Constant *RHS = Visit(E->getRHS());
+
+ const llvm::Type* ResultType = ConvertType(E->getType());
+ if (!ResultType->isInteger()) {
+ CGM.WarnUnsupported(E, "constant expression");
+ return llvm::Constant::getNullValue(ConvertType(E->getType()));
+ }
+ llvm::Constant *Result =
+ llvm::ConstantExpr::getICmp(llvm::ICmpInst::ICMP_NE, LHS, RHS);
+ return llvm::ConstantExpr::getZExtOrBitCast(Result, ResultType);
+ }
+
+ llvm::Constant *VisitConditionalOperator(const ConditionalOperator *E) {
+ llvm::Constant *Cond = Visit(E->getCond());
+ llvm::Constant *CondVal = EmitConversionToBool(Cond, E->getType());
+ llvm::ConstantInt *CondValInt = dyn_cast<llvm::ConstantInt>(CondVal);
+ if (!CondValInt) {
+ CGM.WarnUnsupported(E, "constant expression");
+ return llvm::Constant::getNullValue(ConvertType(E->getType()));
+ }
+ if (CondValInt->isOne()) {
+ if (E->getLHS())
+ return Visit(E->getLHS());
+ return Cond;
+ }
+
+ return Visit(E->getRHS());
+ }
// Utility methods
const llvm::Type *ConvertType(QualType T) {