https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70662
Bug ID: 70662
Summary: vpbroadcastq assemble failure with -masm=intel
-mavx512vbmi
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: assemble-failure
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Target: x86_64-pc-linux-gnu
Created attachment 38267
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38267&action=edit
reduced testcase
Compiler output:
$ gcc -Og -fschedule-insns -fno-tree-fre -mavx512vbmi
--param=max-sched-ready-insns=1 -masm=intel testcase.c
/tmp/cc4IEVUE.s: Assembler messages:
/tmp/cc4IEVUE.s:383: Error: operand size mismatch for `vpbroadcastq'
The failing instruction is:
vpbroadcastq zmm17{k1}, XMMWORD PTR [rsp+4536]
s/XMMWORD/QWORD/ fixes the assembly. The second operand is a QWORD, but if a
register is referenced, it is an XMM register (only 64 bits are used).
