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commit 989879f8fded41c732db93864461b3a67b9f1501
Author: Paul Walker <paul.walker@arm.com>
Date: Thu Jun 22 14:03:28 2023 +0000
[Clang] Allow C++11 style initialisation of SVE types.
Fixes https://github.com/llvm/llvm-project/issues/63223
Differential Revision: https://reviews.llvm.org/D153560
diff --git clang/lib/CodeGen/CGExprScalar.cpp clang/lib/CodeGen/CGExprScalar.cpp
index 02b80f3aba21..dbba8cc96f81 100644
--- clang/lib/CodeGen/CGExprScalar.cpp
+++ clang/lib/CodeGen/CGExprScalar.cpp
@@ -1869,6 +1869,23 @@ Value *ScalarExprEmitter::VisitInitListExpr(InitListExpr *E) {
return Visit(E->getInit(0));
}
+ if (isa<llvm::ScalableVectorType>(VType)) {
+ if (NumInitElements == 0) {
+ // C++11 value-initialization for the vector.
+ return EmitNullValue(E->getType());
+ }
+
+ if (NumInitElements == 1) {
+ Expr *InitVector = E->getInit(0);
+
+ // Initialize from another scalable vector of the same type.
+ if (InitVector->getType() == E->getType())
+ return Visit(InitVector);
+ }
+
+ llvm_unreachable("Unexpected initialization of a scalable vector!");
+ }
+
unsigned ResElts = cast<llvm::FixedVectorType>(VType)->getNumElements();
// Loop over initializers collecting the Value for each, and remembering
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