Hi, I found wrong vpcmpeqd instruction form generated in case of "-march=skylake-avx512 -mprefer-vector-width=128" options set
The compiler emits following error at compile stage:
Error: invalid register operand for `vpcmpeqd'
Because following was generated:
vpcmpeqd %xmm16, %xmm16, %xmm16
In this form the instruction can use zmm0-xmm15 registers only.
2017-11-24 Sergey Shalnov <sergey.shal...@intel.com>
gcc/
* config/i386/i386.c (standard_sse_constant_opcode):
Fix wrong form for vpcmpeqd instruction
0008-Wrong-instruction-vpcmpeqd-generation.patch
Description: 0008-Wrong-instruction-vpcmpeqd-generation.patch
