71 lines
2.3 KiB
Diff
71 lines
2.3 KiB
Diff
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From 2c763d7ec71ef51f8704c8c3444dd5ab9144dbc6 Mon Sep 17 00:00:00 2001
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From: Lulu Cheng <chenglulu@loongson.cn>
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Date: Fri, 28 Jun 2024 15:09:48 +0800
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Subject: [PATCH 07/20] LoongArch: Define loongarch_insn_cost and set the cost
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of movcf2gr and movgr2cf.
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The following two FAIL items have been fixed:
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FAIL: gcc.target/loongarch/movcf2gr-via-fr.c scan-assembler movcf2fr\\t\\\\\$f[0-9]+,\\\\\$fcc
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FAIL: gcc.target/loongarch/movcf2gr-via-fr.c scan-assembler movfr2gr\\\\.s\\t\\\\\$r4
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gcc/ChangeLog:
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* config/loongarch/loongarch.cc (loongarch_insn_cost):
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New function.
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(TARGET_INSN_COST): New macro.
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---
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gcc/config/loongarch/loongarch.cc | 29 +++++++++++++++++++++++++++++
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1 file changed, 29 insertions(+)
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diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc
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index 9148ebcbc..2b2f3c613 100644
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--- a/gcc/config/loongarch/loongarch.cc
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+++ b/gcc/config/loongarch/loongarch.cc
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@@ -4372,6 +4372,33 @@ loongarch_address_cost (rtx addr, machine_mode mode,
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return loongarch_address_insns (addr, mode, false);
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}
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+/* Implement TARGET_INSN_COST. */
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+
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+static int
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+loongarch_insn_cost (rtx_insn *insn, bool speed)
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+{
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+ rtx x = PATTERN (insn);
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+ int cost = pattern_cost (x, speed);
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+
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+ /* On LA464, prevent movcf2fr and movfr2gr from merging into movcf2gr. */
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+ if (GET_CODE (x) == SET
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+ && GET_MODE (XEXP (x, 0)) == FCCmode)
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+ {
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+ rtx dest, src;
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+ dest = XEXP (x, 0);
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+ src = XEXP (x, 1);
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+
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+ if (REG_P (dest) && REG_P (src))
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+ {
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+ if (GP_REG_P (REGNO (dest)) && FCC_REG_P (REGNO (src)))
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+ cost = loongarch_cost->movcf2gr;
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+ else if (FCC_REG_P (REGNO (dest)) && GP_REG_P (REGNO (src)))
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+ cost = loongarch_cost->movgr2cf;
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+ }
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+ }
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+ return cost;
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+}
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+
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/* Return one word of double-word value OP, taking into account the fixed
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endianness of certain registers. HIGH_P is true to select the high part,
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false to select the low part. */
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@@ -11093,6 +11120,8 @@ loongarch_asm_code_end (void)
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#define TARGET_RTX_COSTS loongarch_rtx_costs
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#undef TARGET_ADDRESS_COST
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#define TARGET_ADDRESS_COST loongarch_address_cost
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+#undef TARGET_INSN_COST
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+#define TARGET_INSN_COST loongarch_insn_cost
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#undef TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST
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#define TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST \
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loongarch_builtin_vectorization_cost
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--
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2.43.0
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