Add list initialization for complex numbers in C. Essentially, this allows "_Complex float x = {1.0f, 2.0f};". See changes to docs/LanguageExtensions.html for a longer description.
<rdar://problem/9397672>.
llvm-svn: 140090
diff --git a/clang/lib/CodeGen/CGExprConstant.cpp b/clang/lib/CodeGen/CGExprConstant.cpp
index c0b7045..d7dfa25 100644
--- a/clang/lib/CodeGen/CGExprConstant.cpp
+++ b/clang/lib/CodeGen/CGExprConstant.cpp
@@ -742,6 +742,22 @@
}
llvm::Constant *VisitInitListExpr(InitListExpr *ILE) {
+ if (ILE->getType()->isAnyComplexType() && ILE->getNumInits() == 2) {
+ // Complex type with element initializers
+ Expr *Real = ILE->getInit(0);
+ Expr *Imag = ILE->getInit(1);
+ llvm::Constant *Complex[2];
+ Complex[0] = CGM.EmitConstantExpr(Real, Real->getType(), CGF);
+ if (!Complex[0])
+ return 0;
+ Complex[1] = CGM.EmitConstantExpr(Imag, Imag->getType(), CGF);
+ if (!Complex[1])
+ return 0;
+ llvm::StructType *STy =
+ cast<llvm::StructType>(ConvertType(ILE->getType()));
+ return llvm::ConstantStruct::get(STy, Complex);
+ }
+
if (ILE->getType()->isScalarType()) {
// We have a scalar in braces. Just use the first element.
if (ILE->getNumInits() > 0) {