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tcg-sparc: Improve tcg_out_movi for sparc64. 

Generate sign-extended 32-bit constants with SETHI+XOR.
Otherwise tidy the routine to avoid the need for
conditional compilation and code duplication with movi_imm32.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2009-12-19 19:45:27 -08:00 committed by Blue Swirl
parent 4a09aa895e
commit 431722077a
1 changed files with 15 additions and 12 deletions
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27
tcg/sparc/tcg-target.c
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@ -314,22 +314,25 @@ static inline void tcg_out_movi_imm32(TCGContext *s, int ret, uint32_t arg)
static inline void tcg_out_movi(TCGContext *s, TCGType type,
int ret, tcg_target_long arg)
{
#if defined(__sparc_v9__) && !defined(__sparc_v8plus__)
if (!check_fit_tl(arg, 32) && (arg & ~0xffffffffULL) != 0) {
tcg_out_movi_imm32(s, TCG_REG_I4, arg >> 32);
/* All 32-bit constants, as well as 64-bit constants with
no high bits set go through movi_imm32. */
if (TCG_TARGET_REG_BITS == 32
|| type == TCG_TYPE_I32
|| (arg & ~(tcg_target_long)0xffffffff) == 0) {
tcg_out_movi_imm32(s, ret, arg);
} else if (check_fit_tl(arg, 13)) {
/* A 13-bit constant sign-extended to 64-bits. */
tcg_out_movi_imm13(s, ret, arg);
} else if (check_fit_tl(arg, 32)) {
/* A 32-bit constant sign-extended to 64-bits. */
tcg_out_sethi(s, ret, ~arg);
tcg_out_arithi(s, ret, ret, (arg & 0x3ff) | -0x400, ARITH_XOR);
} else {
tcg_out_movi_imm32(s, TCG_REG_I4, arg >> (TCG_TARGET_REG_BITS / 2));
tcg_out_arithi(s, TCG_REG_I4, TCG_REG_I4, 32, SHIFT_SLLX);
tcg_out_movi_imm32(s, ret, arg);
tcg_out_arith(s, ret, ret, TCG_REG_I4, ARITH_OR);
} else if (check_fit_tl(arg, 12))
tcg_out_movi_imm13(s, ret, arg);
else {
tcg_out_sethi(s, ret, arg);
if (arg & 0x3ff)
tcg_out_arithi(s, ret, ret, arg & 0x3ff, ARITH_OR);
}
#else
tcg_out_movi_imm32(s, ret, arg);
#endif
}
static inline void tcg_out_ld_raw(TCGContext *s, int ret,