https://sourceware.org/bugzilla/show_bug.cgi?id=20614
Bug ID: 20614 Summary: gas missing full operand support for vpbroadcastb and vpbroadcastw instructions Product: binutils Version: unspecified Status: UNCONFIRMED Severity: normal Priority: P2 Component: gas Assignee: unassigned at sourceware dot org Reporter: geir at cray dot com Target Milestone: --- This does not assemble with the latest gas from git/master (commit d2dfe70): .text .globl main .p2align 6, 0x90 .type main,@function main: vpbroadcastb %al, %ymm0 vpbroadcastw %ax, %ymm1 vpbroadcastb %eax, %ymm2 vpbroadcastw %eax, %ymm3 retq The first two vpbroadcast instructions fail with "invalid operand" while the second two get through. I checked the opcodes table in the latest master binutils and it only supports GR32 and GR64 source registers for these instructions. I see nothing in the Intel documentation that restricts these instructions to only take 32- and 64-bit GPRs. As far as I can tell encodings for 8- and 16-bit GPR sizes are legal. It's certainly possible I missed some subtlety and if so it would be helpful to have a better understanding of why these operand sizes aren't supported. -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils