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(expand_units): When calculate BLOCKAGE, reverse terms to POS_MINUS_OP.

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(expand_units): When calculate BLOCKAGE, reverse
terms to POS_MINUS_OP.  Clarify comment before BLOCKAGE computation.
(write_complex_function): Use EXECUTING_INSN for first switch, and
CANDIDATE_INSN for second switch.

From-SVN: r6442
This commit is contained in:
Jim Wilson 1994-01-31 12:43:02 -08:00
parent 8cfaf7a7bb
commit cb1520bc9f
1 changed files with 8 additions and 4 deletions
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12
gcc/genattrtab.c
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@ -1954,6 +1954,10 @@ expand_units ()
candidate insn, so in the expressions below, C is a known candidate insn, so in the expressions below, C is a known
term and E is an unknown term. term and E is an unknown term.
We compute the blockage cost for each E for every possible C.
Thus OP represents E, and READYCOST is a list of values for
every possible C.
The issue delay function for C is op->issue_exp and is used to The issue delay function for C is op->issue_exp and is used to
write the `<name>_unit_conflict_cost' function. Symbolicly write the `<name>_unit_conflict_cost' function. Symbolicly
this is "ISSUE-DELAY (E,C)". this is "ISSUE-DELAY (E,C)".
@ -1995,8 +1999,8 @@ expand_units ()
* unit->issue_delay.min)); * unit->issue_delay.min));
if (delay > 0) if (delay > 0)
blockage = operate_exp (POS_MINUS_OP, blockage, blockage = operate_exp (POS_MINUS_OP,
make_numeric_value (delay)); make_numeric_value (delay), blockage);
blockage = operate_exp (MAX_OP, blockage, op->issue_exp); blockage = operate_exp (MAX_OP, blockage, op->issue_exp);
blockage = simplify_knowing (blockage, unit->condexp); blockage = simplify_knowing (blockage, unit->condexp);
@ -5114,7 +5118,7 @@ write_complex_function (unit, name, connection)
printf ("{\n"); printf ("{\n");
printf (" rtx insn;\n"); printf (" rtx insn;\n");
printf (" int casenum;\n\n"); printf (" int casenum;\n\n");
printf (" insn = candidate_insn;\n"); printf (" insn = executing_insn;\n");
printf (" switch (recog_memoized (insn))\n"); printf (" switch (recog_memoized (insn))\n");
printf (" {\n"); printf (" {\n");
@ -5136,7 +5140,7 @@ write_complex_function (unit, name, connection)
/* Now write an outer switch statement on each case. Then write /* Now write an outer switch statement on each case. Then write
the tests on the executing function within each. */ the tests on the executing function within each. */
printf (" insn = executing_insn;\n"); printf (" insn = candidate_insn;\n");
printf (" switch (casenum)\n"); printf (" switch (casenum)\n");
printf (" {\n"); printf (" {\n");