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6 Commits

Author SHA1 Message Date
Nadav Rotem 30a65bc39e Remove the -licm pass from the loop vectorizer test because the loop vectorizer does it now. 
llvm-svn: 171930
 2013-01-09 01:20:59 +00:00
Nadav Rotem b696c36fcd Cost Model: Move the 'max unroll factor' variable to the TTI and add initial Cost Model support on ARM. 
llvm-svn: 171928
 2013-01-09 01:15:42 +00:00
Nadav Rotem e1d5c4b8b9 LoopVectorizer: 
1. Add code to estimate register pressure.
2. Add code to select the unroll factor based on register pressure.
3. Add bits to TargetTransformInfo to provide the number of registers.

llvm-svn: 171469
 2013-01-04 17:48:25 +00:00
Nadav Rotem cf9999d9d5 CostModel: Change the default target-independent implementation for finding 
the cost of arithmetic functions. We now assume that the cost of arithmetic
operations that are marked as Legal or Promote is low, but ops that are
marked as custom are higher.

llvm-svn: 171002
 2012-12-23 17:31:23 +00:00
Nadav Rotem 4cb8cdab5e LoopVectorize: Preserve NSW, NUW and IsExact flags. 
llvm-svn: 167174
 2012-10-31 21:40:39 +00:00
Nadav Rotem 859366f93f 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.

llvm-svn: 166864
 2012-10-27 04:11:32 +00:00