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xtensa: Fix RTL insn cost estimation about relaxed MOVI instructions

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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.
This commit is contained in:
Takayuki 'January June' Suwa 2022-06-20 04:13:56 +09:00 • committed by Max Filippov
parent 75ab2f0ebd
commit 46880cd8be
1 changed files with 14 additions and 8 deletions
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22
gcc/config/xtensa/xtensa.cc
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@ -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;
}