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>
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@ -527,7 +527,7 @@ static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg ret,
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}
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}
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static inline bool mask_operand(uint32_t c, int *mb, int *me)
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static bool mask_operand(uint32_t c, int *mb, int *me)
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{
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uint32_t lsb, test;
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@ -551,6 +551,30 @@ static inline bool mask_operand(uint32_t c, int *mb, int *me)
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return true;
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}
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static bool mask64_operand(uint64_t c, int *mb, int *me)
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{
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uint64_t lsb;
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if (c == 0) {
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return false;
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}
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lsb = c & -c;
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/* Accept 1..10..0. */
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if (c == -lsb) {
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*mb = 0;
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*me = clz64(lsb);
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return true;
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}
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/* Accept 0..01..1. */
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if (lsb == 1 && (c & (c + 1)) == 0) {
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*mb = clz64(c + 1) + 1;
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*me = 63;
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return true;
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}
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return false;
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}
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static void tcg_out_andi32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
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{
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int mb, me;
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@ -569,6 +593,28 @@ static void tcg_out_andi32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c)
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}
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}
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static void tcg_out_andi64(TCGContext *s, TCGReg dst, TCGReg src, uint64_t c)
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{
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int mb, me;
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if ((c & 0xffff) == c) {
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tcg_out32(s, ANDI | SAI(src, dst, c));
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return;
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} else if ((c & 0xffff0000) == c) {
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tcg_out32(s, ANDIS | SAI(src, dst, c >> 16));
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return;
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} else if (mask64_operand(c, &mb, &me)) {
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if (mb == 0) {
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tcg_out_rld(s, RLDICR, dst, src, 0, me);
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} else {
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tcg_out_rld(s, RLDICL, dst, src, 0, mb);
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}
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} else {
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tcg_out_movi(s, TCG_TYPE_I64, 0, c);
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tcg_out32(s, AND | SAB(src, dst, 0));
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}
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}
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static void tcg_out_zori32(TCGContext *s, TCGReg dst, TCGReg src, uint32_t c,
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int op_lo, int op_hi)
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{
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@ -1403,20 +1449,10 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args,
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break;
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case INDEX_op_and_i64:
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if (const_args[2]) {
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if ((args[2] & 0xffff) == args[2]) {
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tcg_out32(s, ANDI | SAI(args[1], args[0], args[2]));
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} else if ((args[2] & 0xffff0000) == args[2]) {
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tcg_out32(s, ANDIS | SAI(args[1], args[0], args[2] >> 16));
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tcg_out_andi64(s, args[0], args[1], args[2]);
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} else {
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tcg_out_movi (s, (opc == INDEX_op_and_i32
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? TCG_TYPE_I32
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: TCG_TYPE_I64),
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0, args[2]);
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tcg_out32 (s, AND | SAB (args[1], args[0], 0));
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tcg_out32(s, AND | SAB(args[1], args[0], args[2]));
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}
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}
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else
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tcg_out32 (s, AND | SAB (args[1], args[0], args[2]));
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break;
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case INDEX_op_or_i64:
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case INDEX_op_or_i32:
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