This adjusts intel costs to reflect other intel CPU costs in _one_ place
to fix PR87545. But I noted that -mtune=intel lacks any common sense
so please intel folks do your homework.
Bootstrapped and tested on x86_64-unknown-linux-gnu, applied.
Richard.
2019-01-02 Richard Biener <rguent...@suse.de>
PR target/87545
* config/i386/x86-tune-costs.h (intel_cost): Adjust
cost of cheap SSE instruction.
Index: gcc/config/i386/x86-tune-costs.h
===================================================================
--- gcc/config/i386/x86-tune-costs.h (revision 267505)
+++ gcc/config/i386/x86-tune-costs.h (working copy)
@@ -2115,7 +2115,7 @@ struct processor_costs intel_cost = {
COSTS_N_INSNS (8), /* cost of FCHS instruction. */
COSTS_N_INSNS (40), /* cost of FSQRT instruction. */
- COSTS_N_INSNS (8), /* cost of cheap SSE instruction. */
+ COSTS_N_INSNS (1), /* cost of cheap SSE instruction. */
COSTS_N_INSNS (8), /* cost of ADDSS/SD SUBSS/SD insns. */
COSTS_N_INSNS (8), /* cost of MULSS instruction. */
COSTS_N_INSNS (8), /* cost of MULSD instruction. */
