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author | Quentin Colombet <qcolombet@apple.com> | 2013-10-11 18:29:42 +0000 |
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committer | Quentin Colombet <qcolombet@apple.com> | 2013-10-11 18:29:42 +0000 |
commit | 83f743a4d5b4298893adaada0270ff2d832a50c7 (patch) | |
tree | 52875fd50421737fb74516f625b9037f3314eea9 /utils | |
parent | 4351741a3b36bfe1ac1b385334fc5fa6f6ef5a11 (diff) | |
download | llvm-83f743a4d5b4298893adaada0270ff2d832a50c7.tar.gz llvm-83f743a4d5b4298893adaada0270ff2d832a50c7.tar.bz2 llvm-83f743a4d5b4298893adaada0270ff2d832a50c7.tar.xz |
[DAGCombiner] Reapply load slicing (192471) with a test that explicitly set sse4.2 support.
This should fix the buildbots.
Original commit message:
[DAGCombiner] Slice a big load in two loads when the element are next to each
other in memory and the target has paired load and performs post-isel loads
combining.
E.g., this optimization will transform something like this:
a = load i64* addr
b = trunc i64 a to i32
c = lshr i64 a, 32
d = trunc i64 c to i32
into:
b = load i32* addr1
d = load i32* addr2
Where addr1 = addr2 +/- sizeof(i32), if the target supports paired load and
performs post-isel loads combining.
One should overload TargetLowering::hasPairedLoad to provide this information.
The default is false.
<rdar://problem/14477220>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192476 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils')
0 files changed, 0 insertions, 0 deletions