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loop.c (loop_invariant_p, [...]): Use regs_invalidated_by_call instead of call_used_regs.

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2005-05-30  Pat Haugen  <pthaugen@us.ibm.com>

        * loop.c (loop_invariant_p, valid_initial_value_p): Use
        regs_invalidated_by_call instead of call_used_regs.

From-SVN: r100378
This commit is contained in:
Pat Haugen 2005-05-30 23:34:08 +00:00 committed by David Edelsohn
parent c0309c74ca
commit 3c6fcc101a
2 changed files with 9 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-05-30 Pat Haugen <pthaugen@us.ibm.com>
* loop.c (loop_invariant_p, valid_initial_value_p): Use
regs_invalidated_by_call instead of call_used_regs.
2005-05-30 Paolo Carlini <pcarlini@suse.de>
PR middle-end/21743

6
gcc/loop.c
View File

@ -3645,7 +3645,8 @@ loop_invariant_p (const struct loop *loop, rtx x)
return 1;
if (LOOP_INFO (loop)->has_call
&& REGNO (x) < FIRST_PSEUDO_REGISTER && call_used_regs[REGNO (x)])
&& REGNO (x) < FIRST_PSEUDO_REGISTER
&& TEST_HARD_REG_BIT (regs_invalidated_by_call, REGNO (x)))
return 0;
/* Out-of-range regs can occur when we are called from unrolling.
@ -6719,7 +6720,8 @@ valid_initial_value_p (rtx x, rtx insn, int call_seen, rtx loop_start)
some machines, don't use any hard registers at all. */
if (REGNO (x) < FIRST_PSEUDO_REGISTER
&& (SMALL_REGISTER_CLASSES
|| (call_used_regs[REGNO (x)] && call_seen)))
|| (call_seen
&& TEST_HARD_REG_BIT (regs_invalidated_by_call, REGNO (x)))))
return 0;
/* Don't use registers that have been clobbered before the start of the