Craig Topper 198308e988 [X86] Teach EVEX->VEX pass to turn VRNDSCALE into VROUND when bits 7:4 of the immediate are 0 and the regular EVEX->VEX checks pass.
Bits 7:4 control the scale part of the operation. If the scale is 0 the behavior is equivalent to VROUND.

Fixes PR36246

llvm-svn: 324985
2018-02-13 04:19:26 +00:00
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2016-01-26 21:29:08 +00:00
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