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tcg: Constant fold neg, andc, orc, eqv, nand, nor.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2011-08-17 14:11:47 -07:00 committed by Blue Swirl
parent 25c4d9cc84
commit cb25c80a9b
1 changed files with 27 additions and 0 deletions
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27
tcg/optimize.c
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@ -215,6 +215,24 @@ static TCGArg do_constant_folding_2(int op, TCGArg x, TCGArg y)
CASE_OP_32_64(not): CASE_OP_32_64(not):
return ~x; return ~x;
CASE_OP_32_64(neg):
return -x;
CASE_OP_32_64(andc):
return x & ~y;
CASE_OP_32_64(orc):
return x | ~y;
CASE_OP_32_64(eqv):
return ~(x ^ y);
CASE_OP_32_64(nand):
return ~(x & y);
CASE_OP_32_64(nor):
return ~(x | y);
CASE_OP_32_64(ext8s): CASE_OP_32_64(ext8s):
return (int8_t)x; return (int8_t)x;
@ -290,6 +308,9 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
CASE_OP_32_64(and): CASE_OP_32_64(and):
CASE_OP_32_64(or): CASE_OP_32_64(or):
CASE_OP_32_64(xor): CASE_OP_32_64(xor):
CASE_OP_32_64(eqv):
CASE_OP_32_64(nand):
CASE_OP_32_64(nor):
if (temps[args[1]].state == TCG_TEMP_CONST) { if (temps[args[1]].state == TCG_TEMP_CONST) {
tmp = args[1]; tmp = args[1];
args[1] = args[2]; args[1] = args[2];
@ -389,6 +410,7 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
args += 2; args += 2;
break; break;
CASE_OP_32_64(not): CASE_OP_32_64(not):
CASE_OP_32_64(neg):
CASE_OP_32_64(ext8s): CASE_OP_32_64(ext8s):
CASE_OP_32_64(ext8u): CASE_OP_32_64(ext8u):
CASE_OP_32_64(ext16s): CASE_OP_32_64(ext16s):
@ -421,6 +443,11 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
CASE_OP_32_64(sar): CASE_OP_32_64(sar):
CASE_OP_32_64(rotl): CASE_OP_32_64(rotl):
CASE_OP_32_64(rotr): CASE_OP_32_64(rotr):
CASE_OP_32_64(andc):
CASE_OP_32_64(orc):
CASE_OP_32_64(eqv):
CASE_OP_32_64(nand):
CASE_OP_32_64(nor):
if (temps[args[1]].state == TCG_TEMP_CONST if (temps[args[1]].state == TCG_TEMP_CONST
&& temps[args[2]].state == TCG_TEMP_CONST) { && temps[args[2]].state == TCG_TEMP_CONST) {
gen_opc_buf[op_index] = op_to_movi(op); gen_opc_buf[op_index] = op_to_movi(op);