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(rest_of_compilation): jump_optimize can change max_reg_num so rerun reg_scan 

before calling cse_main.

From-SVN: r6360
This commit is contained in:
Doug Evans 1994-01-08 19:56:03 +00:00
parent 919ea6a5c3
commit 9e9b48a4a2
1 changed files with 5 additions and 2 deletions
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7
gcc/toplev.c
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@ -2561,10 +2561,13 @@ rest_of_compilation (decl)
{
/* Running another jump optimization pass before the second
cse pass sometimes simplifies the RTL enough to allow
the second CSE pass to do a better job. */
TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0));
the second CSE pass to do a better job. Jump_optimize can change
max_reg_num so we must rerun reg_scan afterwards.
??? Rework to not call reg_scan so often. */
TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0));
TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (),
1, cse2_dump_file));
if (tem)