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target/arm: Simplify gen_sar

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Use tcg_gen_umin_i32 instead of tcg_gen_movcond_i32.
Use tcg_constant_i32 while we're at it.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-04-17 10:43:41 -07:00 committed by Peter Maydell
parent fe12080c5f
commit 099d1c2088
1 changed files with 3 additions and 5 deletions
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8
target/arm/translate.c
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@ -568,12 +568,10 @@ GEN_SHIFT(shr)
static void gen_sar(TCGv_i32 dest, TCGv_i32 t0, TCGv_i32 t1)
{
TCGv_i32 tmp1, tmp2;
tmp1 = tcg_temp_new_i32();
TCGv_i32 tmp1 = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp1, t1, 0xff);
tmp2 = tcg_const_i32(0x1f);
tcg_gen_movcond_i32(TCG_COND_GTU, tmp1, tmp1, tmp2, tmp2, tmp1);
tcg_temp_free_i32(tmp2);
tcg_gen_umin_i32(tmp1, tmp1, tcg_constant_i32(31));
tcg_gen_sar_i32(dest, t0, tmp1);
tcg_temp_free_i32(tmp1);
}