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[X86][AVX512] Make i1 illegal in the CodeGen

Authored by guyblank on May 19 2017, 5:35 AM.

Description

[X86][AVX512] Make i1 illegal in the CodeGen

This patch defines the i1 type as illegal in the X86 backend for AVX512.
For DAG operations on <N x i1> types (build vector, extract vector element, ...) i8 is used, and should be truncated/extended.
This should produce better scalar code for i1 types since GPRs will be used instead of mask registers.

Differential Revision: https://reviews.llvm.org/D32273

llvm-svn: 303421

Details

Committed
guyblankMay 19 2017, 5:35 AM
Differential Revision
D32273: [X86][AVX512] Make i1 illegal in the CodeGen
Parents
rGd8945baa0a44: [ScopDetection] Allow detection of full functions
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