Chris Lattner 9ee947c224 teach zext optimization how to deal with truncs that don't come from ...

the zext dest type.  This allows us to handle test52/53 in cast.ll,
and allows llvm-gcc to generate much better code for PR4216 in -m64
mode:

_test_bitfield:                                             ## @test_bitfield
	orl	$32962, %edi
	movl	%edi, %eax
	andl	$-25350, %eax
	ret

This also fixes a bug handling vector extends, ensuring that the
mask produced is a vector constant, not an integer constant.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93127 91177308-0d34-0410-b5e6-96231b3b80d8

2010-01-10 20:25:54 +00:00

..

Hello

Fix a bunch of little errors that Clang complains about when its being pedantic

2009-12-19 07:05:23 +00:00

InstCombine

teach zext optimization how to deal with truncs that don't come from

2010-01-10 20:25:54 +00:00

Instrumentation

Move remaining stuff to the isInteger predicate.

2010-01-05 21:05:54 +00:00

IPO

Be less stingy as to how many selects and phi nodes we

2010-01-07 05:48:42 +00:00

Scalar

only factor from expressions whose uses are empty and whose

2010-01-09 06:01:36 +00:00

Utils

Fix nondeterministic behavior.

2010-01-10 01:07:22 +00:00

Makefile

move instcombine to its own library, it's past time.

2010-01-04 06:23:24 +00:00