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kshiftrw
2017 Jan 24
7
[X86][AVX512] RFC: make i1 illegal in the Codegen
...# %if
pushq %rax
callq bar
# kill: %AL<def> %AL<kill> %EAX<def>
andl $1, %eax
kmovw %eax, %k0
addq $8, %rsp
jmp .LBB0_3
.LBB0_1:
kxnorw %k0, %k0, %k0
kshiftrw $15, %k0, %k0
.LBB0_3: # %else
kmovw %k0, %eax
# kill: %AL<def> %AL<kill> %EAX<kill>
Retq
The kmov,kxnor,kshiftr instructions here are the instructions operating on K registers. These are...