Commit Graph

7 Commits

Author SHA1 Message Date
Nick Lewycky
5259b6a6e2 Add the select optimization recently added to instcombine to constant folding.
This is the one where one of the branches of the select is another select on
the same condition.

llvm-svn: 124547
2011-01-29 20:35:06 +00:00
Nick Lewycky
50f86f3414 Add a constant folding of casts from zero to zero. Fixes PR9011!
While here, I'd like to complain about how vector is not an aggregate type
according to llvm::Type::isAggregateType(), but they're listed under aggregate
types in the LangRef and zero vectors are stored as ConstantAggregateZero.

llvm-svn: 123956
2011-01-21 01:12:09 +00:00
Chris Lattner
238f46d92e remove some noise from tests.
llvm-svn: 112889
2010-09-02 22:35:33 +00:00
Nick Lewycky
938b8b195c Fix a crasher trying to fold each element in a comparison between two vectors
if one of the vectors didn't have elements (such as undef). Fixes PR 6096.

Fix an issue in the constant folder where fcmp (<2 x %ty>, <2 x %ty>) would
have <2 x i1> type if constant folding was successful and i1 type if it wasn't.
This exposed a related issue in the bitcode reader.

llvm-svn: 94069
2010-01-21 07:03:21 +00:00
Chris Lattner
2c890dc2b4 Teach vm core to more aggressively fold 'trunc' constantexprs,
allowing it to simplify the crazy constantexprs in the testcases
down to something sensible.  This allows -std-compile-opts to
completely "devirtualize" the pointers to member functions in
the testcase from PR5176.

llvm-svn: 84368
2009-10-17 21:53:27 +00:00
Chris Lattner
ebc645ca40 remove # uses from FileCheck lines.
llvm-svn: 84367
2009-10-17 21:51:19 +00:00
Chris Lattner
270ab44108 rename test
llvm-svn: 84364
2009-10-17 21:31:19 +00:00