ipa-inline.c (edge_badness): Fix integer underflow.
2013-08-28 Dehao Chen <dehao@google.com> * ipa-inline.c (edge_badness): Fix integer underflow. From-SVN: r202059
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2013-08-28 Dehao Chen <dehao@google.com>
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* ipa-inline.c (edge_badness): Fix integer underflow.
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2013-08-28 Uros Bizjak <ubizjak@gmail.com>
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* gtm-builtins.def (_ITM_free): Declare leaf.
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@ -2972,7 +2972,7 @@ ipa-inline.o : ipa-inline.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
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$(DIAGNOSTIC_H) $(FIBHEAP_H) $(PARAMS_H) $(TREE_PASS_H) \
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$(COVERAGE_H) $(GGC_H) $(TREE_FLOW_H) $(RTL_H) $(IPA_PROP_H) \
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$(EXCEPT_H) $(GIMPLE_PRETTY_PRINT_H) $(IPA_INLINE_H) $(TARGET_H) \
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$(IPA_UTILS_H)
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$(IPA_UTILS_H) sreal.h
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ipa-inline-analysis.o : ipa-inline-analysis.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
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$(TREE_H) langhooks.h $(TREE_INLINE_H) $(FLAGS_H) $(CGRAPH_H) intl.h \
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$(DIAGNOSTIC_H) $(PARAMS_H) $(TREE_PASS_H) $(CFGLOOP_H) \
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@ -113,10 +113,12 @@ along with GCC; see the file COPYING3. If not see
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#include "target.h"
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#include "ipa-inline.h"
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#include "ipa-utils.h"
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#include "sreal.h"
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/* Statistics we collect about inlining algorithm. */
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static int overall_size;
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static gcov_type max_count;
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static sreal max_count_real, max_relbenefit_real, half_int_min_real;
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/* Return false when inlining edge E would lead to violating
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limits on function unit growth or stack usage growth.
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@ -891,12 +893,26 @@ edge_badness (struct cgraph_edge *edge, bool dump)
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else if (max_count)
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{
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sreal tmp, relbenefit_real, growth_real;
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int relbenefit = relative_time_benefit (callee_info, edge, edge_time);
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badness =
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((int)
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((double) edge->count * INT_MIN / 2 / max_count / RELATIVE_TIME_BENEFIT_RANGE) *
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relbenefit) / growth;
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sreal_init(&relbenefit_real, relbenefit, 0);
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sreal_init(&growth_real, growth, 0);
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/* relative_edge_count. */
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sreal_init (&tmp, edge->count, 0);
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sreal_div (&tmp, &tmp, &max_count_real);
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/* relative_time_benefit. */
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sreal_mul (&tmp, &tmp, &relbenefit_real);
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sreal_div (&tmp, &tmp, &max_relbenefit_real);
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/* growth_f_caller. */
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sreal_mul (&tmp, &tmp, &half_int_min_real);
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sreal_div (&tmp, &tmp, &growth_real);
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badness = -1 * sreal_to_int (&tmp);
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/* Be sure that insanity of the profile won't lead to increasing counts
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in the scalling and thus to overflow in the computation above. */
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gcc_assert (max_count >= edge->count);
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@ -1542,6 +1558,9 @@ inline_small_functions (void)
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if (max_count < edge->count)
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max_count = edge->count;
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}
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sreal_init (&max_count_real, max_count, 0);
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sreal_init (&max_relbenefit_real, RELATIVE_TIME_BENEFIT_RANGE, 0);
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sreal_init (&half_int_min_real, INT_MAX / 2, 0);
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ipa_free_postorder_info ();
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initialize_growth_caches ();
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