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[X86] Prevent (bitcast (broadcast_load)) combine from producing vXf16 broadcast…

Authored by craig.topper on Fri, Mar 20, 8:57 AM.

Description

[X86] Prevent (bitcast (broadcast_load)) combine from producing vXf16 broadcast instructions.

The combine tries to put the broadcast in either the integer or
fp domain to match the bitcast domain. But we can only do this
if the broadcast size is 32 or larger.

Details

Committed
craig.topperFri, Mar 20, 9:15 AM
Parents
rGce5173c0e174: Use FinishThunk to finish musttail thunks
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