diff options
| -rw-r--r-- | simplify.c | 18 |
1 files changed, 11 insertions, 7 deletions
@@ -972,8 +972,10 @@ static int simplify_memop(struct instruction *insn) static int simplify_cast(struct instruction *insn) { + unsigned long long mask; struct instruction *def; pseudo_t src; + pseudo_t val; int osize; int size; @@ -991,14 +993,16 @@ static int simplify_cast(struct instruction *insn) def = src->def; switch (def_opcode(src)) { case OP_AND: + val = def->src2; + if (val->type != PSEUDO_VAL) + break; /* A cast of a AND might be a no-op.. */ - if (insn->opcode == OP_TRUNC) { - pseudo_t val = def->src2; - if (val->type == PSEUDO_VAL) { - unsigned long long value = val->value; - if (!(value >> (size-1))) - goto simplify; - } + switch (insn->opcode) { + case OP_TRUNC: + mask = val->value; + if (!(mask >> (size-1))) + goto simplify; + break; } break; case OP_TRUNC: |