diff options
| -rw-r--r-- | tcg/optimize.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index 1cf017aab8..1b9fea5a3d 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -779,13 +779,37 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr, mask = temps[args[3]].mask | temps[args[4]].mask; break; + CASE_OP_32_64(ld8u): + case INDEX_op_qemu_ld8u: + mask = 0xff; + break; + CASE_OP_32_64(ld16u): + case INDEX_op_qemu_ld16u: + mask = 0xffff; + break; + case INDEX_op_ld32u_i64: +#if TCG_TARGET_REG_BITS == 64 + case INDEX_op_qemu_ld32u: +#endif + mask = 0xffffffffu; + break; + + CASE_OP_32_64(qemu_ld): + { + TCGMemOp mop = args[def->nb_oargs + def->nb_iargs]; + if (!(mop & MO_SIGN)) { + mask = (2ULL << ((8 << (mop & MO_SIZE)) - 1)) - 1; + } + } + break; + default: break; } /* 32-bit ops (non 64-bit ops and non load/store ops) generate 32-bit results */ - if (!(tcg_op_defs[op].flags & (TCG_OPF_CALL_CLOBBER | TCG_OPF_64BIT))) { + if (!(def->flags & (TCG_OPF_CALL_CLOBBER | TCG_OPF_64BIT))) { mask &= 0xffffffffu; } |