On Tue, 2024-07-02 at 11:22 +0800, Lulu Cheng wrote:
> +static int
> +loongarch_insn_cost (rtx_insn *insn, bool speed)
> +{
> + rtx x = PATTERN (insn);
> + int cost = pattern_cost (x, speed);
> +
> + /* On LA464, prevent movcf2fr and movfr2gr from merging into movcf2gr. */
> + if (TARGET_uARCH_LA464 && GET_CODE (x) == SET
> + && GET_MODE (XEXP (x, 0)) == FCCmode)
> + {
> + rtx dest, src;
> + dest = XEXP (x, 0);
> + src = XEXP (x, 1);
> +
> + if (REG_P (dest) && REG_P (src))
> + {
> + if (GP_REG_P (REGNO (dest)) && FCC_REG_P (REGNO (src)))
> + cost = COSTS_N_INSNS (7);
cost = loongarch_cost->movcf2gr;
> + else if (FCC_REG_P (REGNO (dest)) && GP_REG_P (REGNO (src)))
> + cost = COSTS_N_INSNS (15);
cost = loongarch_cost->movgr2cf;
Then we don't need to check TARGET_uARCH_LA464.
> + }
> + }
> + return cost;
> +}
--
Xi Ruoyao <xry...@xry111.site>
School of Aerospace Science and Technology, Xidian University
