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| author | Jin-Gu Kang <jaykang10@imrc.kist.re.kr> | 2013-10-03 15:58:48 +0000 |
|---|---|---|
| committer | Jin-Gu Kang <jaykang10@imrc.kist.re.kr> | 2013-10-03 15:58:48 +0000 |
| commit | b70a05a871a9ce44231a5f6308271f333c4ad110 (patch) | |
| tree | b9c341da84adf83e5b53931290bda4b06003529b /utils/Makefile | |
| parent | 4d63c8daec1759e60f85a49b7a91f88edf0c0a4d (diff) | |
| download | external_llvm-b70a05a871a9ce44231a5f6308271f333c4ad110.zip external_llvm-b70a05a871a9ce44231a5f6308271f333c4ad110.tar.gz external_llvm-b70a05a871a9ce44231a5f6308271f333c4ad110.tar.bz2 | |
Added checking code whehter target supports specific dag combining about rotate
or not. The corresponding dag patterns are as following:
"DAGCombier::MatchRotate" function in DAGCombiner.cpp
Pattern1
// fold (or (shl (*ext x), (*ext y)),
// (srl (*ext x), (*ext (sub 32, y)))) ->
// (*ext (rotl x, y))
// fold (or (shl (*ext x), (*ext y)),
// (srl (*ext x), (*ext (sub 32, y)))) ->
// (*ext (rotr x, (sub 32, y)))
pattern2
// fold (or (shl (*ext x), (*ext (sub 32, y))),
// (srl (*ext x), (*ext y))) ->
// (*ext (rotl x, y))
// fold (or (shl (*ext x), (*ext (sub 32, y))),
// (srl (*ext x), (*ext y))) ->
// (*ext (rotr x, (sub 32, y)))
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191905 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/Makefile')
0 files changed, 0 insertions, 0 deletions