<http://www.gnu.org/licenses/>. */
#include "config.h"
-/* stdio.h must precede rtl.h for FFS. */
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "regs.h"
#include "basic-block.h"
#include "flags.h"
-#include "real.h"
#include "insn-config.h"
#include "recog.h"
#include "function.h"
#include "expr.h"
+#include "diagnostic-core.h"
#include "toplev.h"
#include "output.h"
#include "ggc.h"
{
if (regno < FIRST_PSEUDO_REGISTER)
{
- if (SMALL_REGISTER_CLASSES)
+ if (targetm.small_register_classes_for_mode_p (GET_MODE (x)))
return 1;
*cost_p += 2;
}
record = true;
else if (GET_MODE_CLASS (GET_MODE (x)) == MODE_CC)
record = true;
- else if (SMALL_REGISTER_CLASSES)
+ else if (targetm.small_register_classes_for_mode_p (GET_MODE (x)))
record = false;
else if (CLASS_LIKELY_SPILLED_P (REGNO_REG_CLASS (regno)))
record = false;
case MEM:
if (for_gcse)
{
+ /* Can't merge two expressions in different alias sets, since we
+ can decide that the expression is transparent in a block when
+ it isn't, due to it being set with the different alias set. */
+ if (MEM_ALIAS_SET (x) != MEM_ALIAS_SET (y))
+ return 0;
+
/* A volatile mem should not be considered equivalent to any
other. */
if (MEM_VOLATILE_P (x) || MEM_VOLATILE_P (y))
return 0;
-
- /* Can't merge two expressions in different alias sets, since we
- can decide that the expression is transparent in a block when
- it isn't, due to it being set with the different alias set.
-
- Also, can't merge two expressions with different MEM_ATTRS.
- They could e.g. be two different entities allocated into the
- same space on the stack (see e.g. PR25130). In that case, the
- MEM addresses can be the same, even though the two MEMs are
- absolutely not equivalent.
-
- But because really all MEM attributes should be the same for
- equivalent MEMs, we just use the invariant that MEMs that have
- the same attributes share the same mem_attrs data structure. */
- if (MEM_ATTRS (x) != MEM_ATTRS (y))
- return 0;
}
break;
}
}
+ optimize_this_for_speed_p = optimize_bb_for_speed_p (bb);
FOR_BB_INSNS (bb, insn)
{
- optimize_this_for_speed_p = optimize_bb_for_speed_p (bb);
/* If we have processed 1,000 insns, flush the hash table to
avoid extreme quadratic behavior. We must not include NOTEs
in the count since there may be more of them when generating
/* With non-call exceptions, we are not always able to update
the CFG properly inside cse_insn. So clean up possibly
redundant EH edges here. */
- if (flag_non_call_exceptions && have_eh_succ_edges (bb))
+ if (cfun->can_throw_non_call_exceptions && have_eh_succ_edges (bb))
cse_cfg_altered |= purge_dead_edges (bb);
/* If we changed a conditional jump, we may have terminated