diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/combine.c | 1 | ||||
| -rw-r--r-- | gcc/genrecog.c | 22 | ||||
| -rw-r--r-- | gcc/recog.c | 11 |
4 files changed, 26 insertions, 14 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 20caa7a7724..cd7336eafb1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2001-05-21 Richard Henderson <rth@redhat.com> + * combine.c (simplify_comparison): Update op1 after constant + extension. + * recog.c (const_int_operand): Accept only constants valid + for the given mode. + * genrecog.c: Update comments wrt const_int_operand. + * emit-rtl.c (init_emit_once): Zero unused memory in a CONST_DOUBLE. diff --git a/gcc/combine.c b/gcc/combine.c index 11ef550c9b5..e3ad70a9604 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -10025,6 +10025,7 @@ simplify_comparison (code, pop0, pop1) /* Get the constant we are comparing against and turn off all bits not on in our mode. */ const_op = trunc_int_for_mode (INTVAL (op1), mode); + op1 = GEN_INT (const_op); /* If we are comparing against a constant power of two and the value being compared can only have that single bit nonzero (e.g., it was diff --git a/gcc/genrecog.c b/gcc/genrecog.c index 228a5701eb4..00f425bc822 100644 --- a/gcc/genrecog.c +++ b/gcc/genrecog.c @@ -842,18 +842,16 @@ add_to_sequence (pattern, last, position, insn_type, top) test->u.pred.name = pred_name; test->u.pred.mode = mode; - /* See if we know about this predicate and save its number. If - we do, and it only accepts one code, note that fact. The - predicate `const_int_operand' only tests for a CONST_INT, so - if we do so we can avoid calling it at all. - - Finally, if we know that the predicate does not allow - CONST_INT, we know that the only way the predicate can match - is if the modes match (here we use the kludge of relying on - the fact that "address_operand" accepts CONST_INT; otherwise, - it would have to be a special case), so we can test the mode - (but we need not). This fact should considerably simplify the - generated code. */ + /* See if we know about this predicate and save its number. + If we do, and it only accepts one code, note that fact. + + If we know that the predicate does not allow CONST_INT, + we know that the only way the predicate can match is if + the modes match (here we use the kludge of relying on the + fact that "address_operand" accepts CONST_INT; otherwise, + it would have to be a special case), so we can test the + mode (but we need not). This fact should considerably + simplify the generated code. */ for (i = 0; i < NUM_KNOWN_PREDS; i++) if (! strcmp (preds[i].name, pred_name)) diff --git a/gcc/recog.c b/gcc/recog.c index 833a12253a7..888a2f546ff 100644 --- a/gcc/recog.c +++ b/gcc/recog.c @@ -1145,9 +1145,16 @@ immediate_operand (op, mode) int const_int_operand (op, mode) register rtx op; - enum machine_mode mode ATTRIBUTE_UNUSED; + enum machine_mode mode; { - return GET_CODE (op) == CONST_INT; + if (GET_CODE (op) != CONST_INT) + return 0; + + if (mode != VOIDmode + && trunc_int_for_mode (INTVAL (op), mode) != INTVAL (op)) + return 0; + + return 1; } /* Returns 1 if OP is an operand that is a constant integer or constant |
