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| author | Lulu Cheng <chenglulu@loongson.cn> | 2024-06-28 15:09:48 +0800 |
|---|---|---|
| committer | Lulu Cheng <chenglulu@loongson.cn> | 2024-07-02 16:11:39 +0800 |
| commit | 90c8782615e5fadb566ed4fbe4e08af9ea3d2d2d (patch) | |
| tree | 61a67f38d421fc4799169275827cb995b100839c | |
| parent | 20909c97211f25fb29edcd12cb148309c919bf81 (diff) | |
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LoongArch: Define loongarch_insn_cost and set the cost of movcf2gr and movgr2cf.
The following two FAIL items have been fixed:
FAIL: gcc.target/loongarch/movcf2gr-via-fr.c scan-assembler movcf2fr\\t\\\\\$f[0-9]+,\\\\\$fcc
FAIL: gcc.target/loongarch/movcf2gr-via-fr.c scan-assembler movfr2gr\\\\.s\\t\\\\\$r4
gcc/ChangeLog:
* config/loongarch/loongarch.cc (loongarch_insn_cost):
New function.
(TARGET_INSN_COST): New macro.
| -rw-r--r-- | gcc/config/loongarch/loongarch.cc | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc index 0fb547e..27f3dbd 100644 --- a/gcc/config/loongarch/loongarch.cc +++ b/gcc/config/loongarch/loongarch.cc @@ -4372,6 +4372,33 @@ loongarch_address_cost (rtx addr, machine_mode mode, return loongarch_address_insns (addr, mode, false); } +/* Implement TARGET_INSN_COST. */ + +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 (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 = loongarch_cost->movcf2gr; + else if (FCC_REG_P (REGNO (dest)) && GP_REG_P (REGNO (src))) + cost = loongarch_cost->movgr2cf; + } + } + return cost; +} + /* Return one word of double-word value OP, taking into account the fixed endianness of certain registers. HIGH_P is true to select the high part, false to select the low part. */ @@ -11105,6 +11132,8 @@ loongarch_asm_code_end (void) #define TARGET_RTX_COSTS loongarch_rtx_costs #undef TARGET_ADDRESS_COST #define TARGET_ADDRESS_COST loongarch_address_cost +#undef TARGET_INSN_COST +#define TARGET_INSN_COST loongarch_insn_cost #undef TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST #define TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST \ loongarch_builtin_vectorization_cost |