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From: Max Filippov <jcmvbkbc@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-1168] xtensa: Fix RTL insn cost estimation about relaxed MOVI instructions Date: Sun, 19 Jun 2022 23:26:02 +0000 (GMT) [thread overview] Message-ID: <20220619232602.00D343856DF6@sourceware.org> (raw) https://gcc.gnu.org/g:46880cd8be7c307f147a8785ac8f58e04a35d34e commit r13-1168-g46880cd8be7c307f147a8785ac8f58e04a35d34e Author: Takayuki 'January June' Suwa <jjsuwa_sys3175@yahoo.co.jp> Date: Mon Jun 20 04:13:56 2022 +0900 xtensa: Fix RTL insn cost estimation about relaxed MOVI instructions These instructions will all be converted to L32R ones with litpool entries by the assembler. gcc/ChangeLog: * config/xtensa/xtensa.cc (xtensa_is_insn_L32R_p): Consider relaxed MOVI instructions as L32R. Diff: --- gcc/config/xtensa/xtensa.cc | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/gcc/config/xtensa/xtensa.cc b/gcc/config/xtensa/xtensa.cc index 2c534ff9c60..13f2b2b832c 100644 --- a/gcc/config/xtensa/xtensa.cc +++ b/gcc/config/xtensa/xtensa.cc @@ -4286,17 +4286,23 @@ xtensa_is_insn_L32R_p (const rtx_insn *insn) { rtx x = PATTERN (insn); - if (GET_CODE (x) == SET) + if (GET_CODE (x) != SET) + return false; + + x = XEXP (x, 1); + if (MEM_P (x)) { - x = SET_SRC (x); - if (MEM_P (x)) - { - x = XEXP (x, 0); - return (SYMBOL_REF_P (x) || CONST_INT_P (x)) - && CONSTANT_POOL_ADDRESS_P (x); - } + x = XEXP (x, 0); + return (SYMBOL_REF_P (x) || CONST_INT_P (x)) + && CONSTANT_POOL_ADDRESS_P (x); } + /* relaxed MOVI instructions, that will be converted to L32R by the + assembler. */ + if (CONST_INT_P (x) + && ! xtensa_simm12b (INTVAL (x))) + return true; + return false; }
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