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5 Commits

Author SHA1 Message Date
Benjamin Kramer
f939b2b330 DAGCombiner: Don't fold vector muls with constants that look like a splat of a power of 2 but differ in bit width. 
PR17283.

llvm-svn: 191000
 2013-09-19 13:28:20 +00:00
Stephen Lin
52ebde139c Disambiguate function names in some CodeGen tests. (Some tests were using function names that also were names of instructions and/or doing other unusual things that were making the test not amenable to otherwise scriptable pattern matching.) No functionality change. 
llvm-svn: 186621
 2013-07-18 22:29:15 +00:00
Stephen Lin
3ae734a60c Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. 
This was done with the following sed invocation to catch label lines demarking function boundaries:
    sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll
which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct.

llvm-svn: 186258
 2013-07-13 20:38:47 +00:00
Elena Demikhovsky
ea4d3808e5 Optimized integer vector multiplication operation by replacing it with shift/xor/sub when it is possible. Fixed a bug in SDIV, where the const operand is not a splat constant vector. 
llvm-svn: 184931
 2013-06-26 10:55:03 +00:00
Craig Topper
d82abb7156 Add AVX2 instruction lowering for add, sub, and mul. 
llvm-svn: 144174
 2011-11-09 07:28:55 +00:00