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Re: [PATCH] Fix ICE after sel-sched merge
Eric Botcazou writes:
> OK with the following modifications:
> [...]
Thanks very much, Eric. This is what I've checked in after bootstrapping and
regtesting on mips64octeon-linux-gnu along with the pipeline patch that had
originally triggered the bug. It's r140444.
2008-09-17 Adam Nemet <anemet@caviumnetworks.com>
* haifa-sched.c (dep_cost_1): Recognize the producer even if the
consumer is an asm. Add comment why this is important.
(choose_ready): Add comment to the "INSN_CODE (insn) >= 0 ||
recog_memoized (insn) < 0" assert. Put ENABLE_CHECKING around
it.
Index: gcc/haifa-sched.c
===================================================================
--- gcc.orig/haifa-sched.c 2008-09-15 11:12:17.000000000 -0700
+++ gcc/haifa-sched.c 2008-09-17 12:05:44.000000000 -0700
@@ -646,10 +646,12 @@ insn_cost (rtx insn)
/* Compute cost of dependence LINK.
This is the number of cycles between instruction issue and
- instruction results. */
+ instruction results.
+ ??? We also use this function to call recog_memoized on all insns. */
int
dep_cost_1 (dep_t link, dw_t dw)
{
+ rtx insn = DEP_PRO (link);
rtx used = DEP_CON (link);
int cost;
@@ -657,10 +659,12 @@ dep_cost_1 (dep_t link, dw_t dw)
This allows the computation of a function's result and parameter
values to overlap the return and call. */
if (recog_memoized (used) < 0)
- cost = 0;
+ {
+ cost = 0;
+ recog_memoized (insn);
+ }
else
{
- rtx insn = DEP_PRO (link);
enum reg_note dep_type = DEP_TYPE (link);
cost = insn_cost (insn);
@@ -2312,8 +2316,14 @@ choose_ready (struct ready_list *ready,
{
insn = ready_element (ready, i);
+#ifdef ENABLE_CHECKING
+ /* If this insn is recognizable we should have already
+ recognized it earlier.
+ ??? Not very clear where this is supposed to be done.
+ See dep_cost_1. */
gcc_assert (INSN_CODE (insn) >= 0
|| recog_memoized (insn) < 0);
+#endif
ready_try [i]
= (/* INSN_CODE check can be omitted here as it is also done later