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[InstCombine] Support (mul (sext x), cst) --> (sext (mul x, cst')) and (mul (zext...
authorCraig Topper <craig.topper@intel.com>
Tue, 11 Sep 2018 16:51:24 +0000 (16:51 +0000)
committerCraig Topper <craig.topper@intel.com>
Tue, 11 Sep 2018 16:51:24 +0000 (16:51 +0000)
commita57bb61a3e87bad1d701c1c98fc9d1d6bd6563e4
treef85e8c786758f2ab4bde6b9e80e16386365da8ddtree | snapshot
parent49d190f6f8f4e78ac1438c6054ffea087aa85bfdcommit | diff
[InstCombine] Support (mul (sext x), cst) --> (sext (mul x, cst')) and (mul (zext x), cst) --> (zext (mul x, cst')) for vectors constants.

Similar to D51236, but for mul instead of add.

Differential Revision: https://reviews.llvm.org/D51900

llvm-svn: 341961
llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp diff | blob | history
llvm/test/Transforms/InstCombine/sink-zext.ll diff | blob | history
Domain: System / Toolchain;