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| author | Richard Henderson <rth@twiddle.net> | 2009-12-19 19:45:27 -0800 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2009-12-21 20:52:06 +0000 |
| commit | 431722077a991753052456b83c1749f73618c2a6 (patch) | |
| tree | 24271a63731c46b56967f55e44b37f3c2c273841 /tcg | |
| parent | 4a09aa895e7cd82192e47ede9cde8ab7da4a96ba (diff) | |
| download | qemu-431722077a991753052456b83c1749f73618c2a6.tar.gz qemu-431722077a991753052456b83c1749f73618c2a6.tar.bz2 qemu-431722077a991753052456b83c1749f73618c2a6.zip | |
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>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/sparc/tcg-target.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c index b480ed6237..78b26c9507 100644 --- a/tcg/sparc/tcg-target.c +++ b/tcg/sparc/tcg-target.c @@ -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, |