Implement feedback from Eli re: the purpose of lax vector conversions
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74397 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 383edec..464ee93 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -2931,19 +2931,8 @@
bool Sema::CheckExtVectorCast(SourceRange R, QualType DestTy, QualType SrcTy) {
assert(DestTy->isExtVectorType() && "Not an extended vector type!");
- // If SrcTy is also an ExtVectorType, the types must be identical unless
- // lax vector conversions is enabled.
- if (SrcTy->isExtVectorType()) {
- if (getLangOptions().LaxVectorConversions &&
- Context.getTypeSize(DestTy) == Context.getTypeSize(SrcTy))
- return false;
- if (DestTy != SrcTy)
- return Diag(R.getBegin(),diag::err_invalid_conversion_between_ext_vectors)
- << DestTy << SrcTy << R;
- return false;
- }
-
- // If SrcTy is a VectorType, then only the total size must match.
+ // If SrcTy is a VectorType, the total size must match to explicitly cast to
+ // an ExtVectorType.
if (SrcTy->isVectorType()) {
if (Context.getTypeSize(DestTy) != Context.getTypeSize(SrcTy))
return Diag(R.getBegin(),diag::err_invalid_conversion_between_ext_vectors)