diff options
| author | Richard Henderson <rth@twiddle.net> | 2013-02-01 23:58:17 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2013-04-15 19:55:27 +0200 |
| commit | 637af30c764e08763e28908d01e5f73efb5e2318 (patch) | |
| tree | d21070eea04af9d7ac78613bf974827a6e3a32e7 /tcg/ppc64 | |
| parent | a9249dff4dc233f9377e7a3025aa124d8941b096 (diff) | |
tcg-ppc64: Improve and_i64 with constant
Use RLDICL and RLDICR.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg/ppc64')
| -rw-r--r-- | tcg/ppc64/tcg-target.c | 64 |
1 files changed, 50 insertions, 14 deletions
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c index 1b0563fc41..1bd456a737 100644 --- a/tcg/ppc64/tcg-target.c +++ b/tcg/ppc64/tcg-target.c @@ -527,7 +527,7 @@ static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg ret, } } -static inline bool mask_operand(uint32_t c, int *mb, int *me) +static bool mask_operand(uint32_t c, int *mb, int *me) { uint32_t lsb, test; @@ -551,6 +551,30 @@ static inline bool mask_operand(uint32_t c, int *mb, int *me) return true; } +static bool mask64_operand(uint64_t c, int *mb, int *me) +{ + uint64_t lsb; + + if (c == 0) { + return false; + } + + lsb = c & -c; + /* Accept 1..10..0. */ + if (c == -lsb) { + *mb = 0; + *me = clz64(lsb); + return true; + } + /* Accept 0..01..1. */ + if (lsb == 1 && (c & (c + 1)) == 0) { + *mb = clz64(c + 1) + 1; + *me = 63; + return true; + } + return false; +} + static void tcg_out_andi32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c) { int mb, me; @@ -569,6 +593,28 @@ static void tcg_out_andi32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c) } } +static void tcg_out_andi64(TCGContext *s, TCGReg dst, TCGReg src, uint64_t c) +{ + int mb, me; + + if ((c & 0xffff) == c) { + tcg_out32(s, ANDI | SAI(src, dst, c)); + return; + } else if ((c & 0xffff0000) == c) { + tcg_out32(s, ANDIS | SAI(src, dst, c >> 16)); + return; + } else if (mask64_operand(c, &mb, &me)) { + if (mb == 0) { + tcg_out_rld(s, RLDICR, dst, src, 0, me); + } else { + tcg_out_rld(s, RLDICL, dst, src, 0, mb); + } + } else { + tcg_out_movi(s, TCG_TYPE_I64, 0, c); + tcg_out32(s, AND | SAB(src, dst, 0)); + } +} + static void tcg_out_zori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c, int op_lo, int op_hi) { @@ -1403,20 +1449,10 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args, break; case INDEX_op_and_i64: if (const_args[2]) { - if ((args[2] & 0xffff) == args[2]) { - tcg_out32(s, ANDI | SAI(args[1], args[0], args[2])); - } else if ((args[2] & 0xffff0000) == args[2]) { - tcg_out32(s, ANDIS | SAI(args[1], args[0], args[2] >> 16)); - } else { - tcg_out_movi (s, (opc == INDEX_op_and_i32 - ? TCG_TYPE_I32 - : TCG_TYPE_I64), - 0, args[2]); - tcg_out32 (s, AND | SAB (args[1], args[0], 0)); - } + tcg_out_andi64(s, args[0], args[1], args[2]); + } else { + tcg_out32(s, AND | SAB(args[1], args[0], args[2])); } - else - tcg_out32 (s, AND | SAB (args[1], args[0], args[2])); break; case INDEX_op_or_i64: case INDEX_op_or_i32: |