diff options
| -rw-r--r-- | simplify.c | 15 | ||||
| -rw-r--r-- | validation/optim/cmpe-or0.c | 1 |
2 files changed, 15 insertions, 1 deletions
@@ -1311,6 +1311,21 @@ static int simplify_compare_constant(struct instruction *insn, long long value) break; } break; + case OP_OR: + if (!constant(def->src2)) + break; + bits = def->src2->value; + switch (insn->opcode) { + case OP_SET_EQ: + if ((value & bits) != bits) + return replace_with_value(insn, 0); + break; + case OP_SET_NE: + if ((value & bits) != bits) + return replace_with_value(insn, 1); + break; + } + break; case OP_SEXT: // sext(x) cmp C --> x cmp trunc(C) osize = def->orig_type->bit_size; if (is_signed_constant(value, osize, size)) { diff --git a/validation/optim/cmpe-or0.c b/validation/optim/cmpe-or0.c index bef23161..2e89d611 100644 --- a/validation/optim/cmpe-or0.c +++ b/validation/optim/cmpe-or0.c @@ -4,7 +4,6 @@ int cmp_ne(int a) { return ((a | 1) == 0) + 1; } /* * check-name: cmpe-or0 * check-command: test-linearize -Wno-decl $file - * check-known-to-fail * * check-output-ignore * check-output-returns: 1 |