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tcg/ppc: Split out tcg_out_sari{32,64}

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We will shortly require sari in other context;
split out both for cleanliness sake.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-06-13 16:04:40 +00:00
parent f4bf14f401
commit 05dd01fa5a
1 changed files with 13 additions and 4 deletions
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17
tcg/ppc/tcg-target.c.inc
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@ -768,6 +768,12 @@ static inline void tcg_out_shli64(TCGContext *s, TCGReg dst, TCGReg src, int c)
tcg_out_rld(s, RLDICR, dst, src, c, 63 - c);
}
static inline void tcg_out_sari32(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
/* Limit immediate shift count lest we create an illegal insn. */
tcg_out32(s, SRAWI | RA(dst) | RS(src) | SH(c & 31));
}
static inline void tcg_out_shri32(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out_rlw(s, RLWINM, dst, src, 32 - c, c, 31);
@ -778,6 +784,11 @@ static inline void tcg_out_shri64(TCGContext *s, TCGReg dst, TCGReg src, int c)
tcg_out_rld(s, RLDICL, dst, src, 64 - c, c);
}
static inline void tcg_out_sari64(TCGContext *s, TCGReg dst, TCGReg src, int c)
{
tcg_out32(s, SRADI | RA(dst) | RS(src) | SH(c & 0x1f) | ((c >> 4) & 2));
}
/* Emit a move into ret of arg, if it can be done in one insn. */
static bool tcg_out_movi_one(TCGContext *s, TCGReg ret, tcg_target_long arg)
{
@ -2601,8 +2612,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
break;
case INDEX_op_sar_i32:
if (const_args[2]) {
/* Limit immediate shift count lest we create an illegal insn. */
tcg_out32(s, SRAWI | RS(args[1]) | RA(args[0]) | SH(args[2] & 31));
tcg_out_sari32(s, args[0], args[1], args[2]);
} else {
tcg_out32(s, SRAW | SAB(args[1], args[0], args[2]));
}
@ -2690,8 +2700,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
break;
case INDEX_op_sar_i64:
if (const_args[2]) {
int sh = SH(args[2] & 0x1f) | (((args[2] >> 5) & 1) << 1);
tcg_out32(s, SRADI | RA(args[0]) | RS(args[1]) | sh);
tcg_out_sari64(s, args[0], args[1], args[2]);
} else {
tcg_out32(s, SRAD | SAB(args[1], args[0], args[2]));
}