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tcg/aarch64: Expand extract with offset 0 with andi

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We're about to change canonicalization of masks as extract
instead of and.  Retain the andi expansion here.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-12-29 20:15:34 -08:00
parent 42ace08607
commit 936fc0a96e
1 changed files with 6 additions and 1 deletions
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7
tcg/aarch64/tcg-target.c.inc
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@ -2450,7 +2450,12 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, TCGType ext,
case INDEX_op_extract_i64:
case INDEX_op_extract_i32:
tcg_out_ubfm(s, ext, a0, a1, a2, a2 + args[3] - 1);
if (a2 == 0) {
uint64_t mask = MAKE_64BIT_MASK(0, args[3]);
tcg_out_logicali(s, I3404_ANDI, ext, a0, a1, mask);
} else {
tcg_out_ubfm(s, ext, a0, a1, a2, a2 + args[3] - 1);
}
break;
case INDEX_op_sextract_i64: