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(max_uid): New variable. 

(cse_end_of_basic_block): Use it to ignore insns made by CSE.
(cse_main): Set it.

From-SVN: r2846
This commit is contained in:
Richard Kenner 1992-12-08 06:21:29 -05:00
parent 7c791b139c
commit 164c8956a0
1 changed files with 12 additions and 6 deletions
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18
gcc/cse.c
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@ -328,6 +328,9 @@ static int cse_basic_block_end;
static int *uid_cuid;
/* Highest UID in UID_CUID. */
static int max_uid;
/* Get the cuid of an insn. */
#define INSN_CUID(INSN) (uid_cuid[INSN_UID (INSN)])
@ -7382,10 +7385,13 @@ cse_end_of_basic_block (insn, data, follow_jumps, after_loop, skip_blocks)
else if (GET_CODE (p) != NOTE)
nsets += 1;
if (INSN_CUID (p) > high_cuid)
/* Ignore insns made by CSE; they cannot affect the boundaries of
the basic block. */
if (INSN_UID (p) <= max_uid && INSN_CUID (p) > high_cuid)
high_cuid = INSN_CUID (p);
if (INSN_CUID (p) < low_cuid)
low_cuid = INSN_CUID(p);
if (INSN_UID (p) <= max_uid && INSN_CUID (p) < low_cuid)
low_cuid = INSN_CUID (p);
/* See if this insn is in our branch path. If it is and we are to
take it, do so. */
@ -7569,9 +7575,9 @@ cse_main (f, nregs, after_loop, file)
/* Find the largest uid. */
i = get_max_uid ();
uid_cuid = (int *) alloca ((i + 1) * sizeof (int));
bzero (uid_cuid, (i + 1) * sizeof (int));
max_uid = get_max_uid ();
uid_cuid = (int *) alloca ((max_uid + 1) * sizeof (int));
bzero (uid_cuid, (max_uid + 1) * sizeof (int));
/* Compute the mapping from uids to cuids.
CUIDs are numbers assigned to insns, like uids,