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7 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 6d9dafe3ff Force a fixed unroll count on the target independent tests. 
This should fix clang-native-arm-cortex-a9. Thanks Renato.

llvm-svn: 171582
 2013-01-05 00:58:48 +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 a721b21c64 LoopVectorizer: Add a basic cost model which uses the VTTI interface. 
llvm-svn: 166620
 2012-10-24 20:36:32 +00:00
Nadav Rotem d189b82a9b Vectorize: teach cavVectorizeMemory to distinguish between A[i]+=x and A[B[i]]+=x. 
If the pointer is consecutive then it is safe to read and write. If the pointer is non-loop-consecutive then
it is unsafe to vectorize it because we may hit an ordering issue.

llvm-svn: 166371
 2012-10-20 08:26:33 +00:00
Nadav Rotem 4f7f72702b Vectorizer: Add support for loop reductions. 
For example:

  for (i=0; i<n; i++)
   sum += A[i] +  B[i] + i;

llvm-svn: 166351
 2012-10-19 23:05:40 +00:00
Nadav Rotem ced93f3a05 vectorizer: Add support for reading and writing from the same memory location. 
llvm-svn: 166255
 2012-10-19 01:24:18 +00:00