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0dba9a9a26f45119a82200d1db37b734b3e1bb22
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5 Commits

Author SHA1 Message Date
Nadav Rotem
0dba9a9a26 Fix a bug in the cost calculation of vector casts. Detect situations where bitcasts cost zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167170 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-31 20:52:26 +00:00
Nadav Rotem
462d1ca428 Add support for loops that don't start with Zero. 
This is important for loops in the LAPACK test-suite.
These loops start at 1 because they are auto-converted from fortran.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167084 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-31 00:45:26 +00:00
Nadav Rotem
f065a84677 1. Fix a bug in getTypeConversion. When a *simple* type is split, we need to return the type of the split result. 
2. Change the maximum vectorization width from 4 to 8.
3. A test for both.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166864 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-27 04:11:32 +00:00
Nadav Rotem
a5a3a61c5f Refactor the VectorTargetTransformInfo interface. 
Add getCostXXX calls for different families of opcodes, such as casts, arithmetic, cmp, etc.

Port the LoopVectorizer to the new API.

The LoopVectorizer now finds instructions which will remain uniform after vectorization. It uses this information when calculating the cost of these instructions.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166836 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-26 23:49:28 +00:00
Nadav Rotem
f563801144 Move the target-specific tests, which require specific backends, to dirs that only run if the target is present. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166796 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-26 18:52:01 +00:00