[llvm-bugs] [Bug 34873] New: [X86] Execution domain fixing should be able to turn PBLENDW into BLENDPS/BLENDPD
llvm-bugs at lists.llvm.org
Sun Oct 8 10:03:49 PDT 2017
Bug ID: 34873
Summary: [X86] Execution domain fixing should be able to turn
PBLENDW into BLENDPS/BLENDPD
Component: Backend: X86
Assignee: unassignedbugs at nondot.org
Reporter: craig.topper at gmail.com
CC: llvm-bugs at lists.llvm.org
With SSE41 the only integer domain blend that uses an immediate is BLENDW which
has 16-bit elements. Ideally, execution domain fixing should be able to convert
it to floating point when the element size is really at least 32-bits, but that
requires rewriting the immediate. This is more than what the simple table based
domain fixing can currently do.
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