re PR rtl-optimization/37889 (SEGV, conditional execution proactively executed the...

re PR rtl-optimization/37889 (SEGV, conditional execution proactively executed the false arm.)

2009-02-04  Paolo Bonzini  <bonzini@gnu.org>
	    Hans-Peter Nilsson  <hp@axis.com>

	PR rtl-optimization/37889
	* rtlanal.c (rtx_addr_can_trap_p_1): Add offset and size arguments.
	Move offset handling from PLUS to before the switch.  Use new
	arguments when considering SYMBOL_REFs too.
	(rtx_addr_can_trap_p): Pass dummy offset and size.
	(enum may_trap_p_flags): Remove.
	(may_trap_p_1): Pass size from MEM_SIZE.

	PR rtl-optimization/38921
	* loop-invariant.c (find_invariant_insn): Use may_trap_or_fault_p.
	* rtl.h (may_trap_after_code_motion_p): Delete prototype.
	* rtlanal.c (may_trap_after_code_motion_p): Delete.
	(may_trap_p, may_trap_or_fault_p): Pass 0/1 as flags.

Co-Authored-By: Hans-Peter Nilsson <hp@axis.com>
From-SVN: r143939