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Author SHA1 Message Date
Simon Dardis 7cd5876e60 [Sema] Support implicit scalar to vector conversions 
This patch teaches clang to perform implicit scalar to vector conversions
when one of the operands of a binary vector expression is a scalar which
can be converted to the element type of the vector without truncation
following GCC's implementation.

If the (constant) scalar is can be casted safely, it is implicitly casted to the
vector elements type and splatted to produce a vector of the same type.

Contributions from: Petar Jovanovic

Reviewers: bruno, vkalintiris

Differential Revision: https://reviews.llvm.org/D25866

llvm-svn: 302935
 2017-05-12 19:11:06 +00:00
Davide Italiano 32cbff7809 [Sema] Be consistent about diagnostic wording: always use "cannot". 
Discussed with Richard Smith.

llvm-svn: 245162
 2015-08-15 15:23:14 +00:00
Eric Christopher a613f56559 With lax vector conversions (the default) make sure we convert between two 
vectors that are the same size. Fix up testcases accordingly and add a new one
to make sure we still error if lax vector conversions are disabled.

Fixes rdar://8328190

llvm-svn: 112122
 2010-08-26 00:42:16 +00:00