Hi,
since uses of addss for other purposes then modelling FP addition/subtraction
should
be gone now, this patch sets addss cost back to 2.
Bootsrapped/regtested x86_64-linux, comitted.
gcc/ChangeLog:
PR target/119298
* config/i386/x86-tune-costs.h (struct processor_costs): Set addss cost
back to 2.
diff --git a/gcc/config/i386/x86-tune-costs.h b/gcc/config/i386/x86-tune-costs.h
index e5091293509..b08081e37cf 100644
--- a/gcc/config/i386/x86-tune-costs.h
+++ b/gcc/config/i386/x86-tune-costs.h
@@ -2252,7 +2252,7 @@ struct processor_costs znver5_cost = {
COSTS_N_INSNS (1), /* cost of cheap SSE instruction. */
/* ADDSS has throughput 2 and latency 2
(in some cases when source is another addition). */
- COSTS_N_INSNS (3), /* cost of ADDSS/SD SUBSS/SD insns. */
+ COSTS_N_INSNS (2), /* cost of ADDSS/SD SUBSS/SD insns. */
/* MULSS has throughput 2 and latency 3. */
COSTS_N_INSNS (3), /* cost of MULSS instruction. */
COSTS_N_INSNS (3), /* cost of MULSD instruction. */
