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reload_combine vs. exceptions
- From: Andreas Schwab <schwab at linux-m68k dot org>
- To: Kazu Hirata <kazu at codesourcery dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Sun, 14 Nov 2010 22:11:54 +0100
- Subject: reload_combine vs. exceptions
It appears that reload_combine does not take exceptions into account.
When it encounters a BARRIER it forgets all register uses after this
point. But an exception can transfer control to any of the CODE_LABELs
and jump back to after the BARRIER, with the registers still in use.
See PR46395 for a test case.
Andreas.
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Andreas Schwab, schwab@linux-m68k.org
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