https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127268
Bug ID: 127268
Summary: ix86_default_vector_cost doesn't use
sse_to_integer/integer_to_sse
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
Target: x86
ix86_default_vector_cost has
case vec_to_scalar:
case scalar_to_vec:
return ix86_vec_cost (mode, ix86_cost->sse_op);
which uses
const int sse_op; /* cost of cheap SSE instruction. */
It should use
const int sse_to_integer; /* cost of moving SSE register to integer. */
const int integer_to_sse; /* cost of moving integer register to SSE. */
