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5 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
b0e47cdf3d Fix register-dependent X86 tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128867 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-05 00:32:44 +00:00
NAKAMURA Takumi
20cee65fd1 Relax expressions and add explicit triplets -linux and -win32. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126207 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-22 07:20:44 +00:00
Evan Cheng
26e19ba9aa Rever 96389 and 96990. They are causing some miscompilation that I do not fully understand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97782 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 03:08:23 +00:00
Evan Cheng
ae3ecf9603 Look for SSE and instructions of this form: (and x, (build_vector c1,c2,c3,c4)). 
If there exists a use of a build_vector that's the bitwise complement of the mask,
then transform the node to
(and (xor x, (build_vector -1,-1,-1,-1)), (build_vector ~c1,~c2,~c3,~c4)).

Since this transformation is only useful when 1) the given build_vector will
become a load from constpool, and 2) (and (xor x -1), y) matches to a single
instruction, I decided this is appropriate as a x86 specific transformation.
rdar://7323335


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96389 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-16 21:09:44 +00:00
Dan Gohman
c2385a0741 Split the main for-each-use loop again, this time for GenerateTruncates, 
as it also peeks at which registers are being used by other uses. This
makes LSR less sensitive to use-list order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96308 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-16 01:42:53 +00:00