Commit e631038f by Teresa Johnson Committed by Teresa Johnson

re PR bootstrap/63432 (profiledbootstrap failure with bootstrap-lto)

2014-10-15  Teresa Johnson  <tejohnson@google.com>

	PR bootstrap/63432
	* tree-ssa-threadupdate.c (recompute_probabilities): Better
	overflow checking.

From-SVN: r216269
parent bb8c2886
2014-10-15 Teresa Johnson <tejohnson@google.com>
PR bootstrap/63432
* tree-ssa-threadupdate.c (recompute_probabilities): Better
overflow checking.
2014-10-15 Renlin Li <renlin.li@arm.com> 2014-10-15 Renlin Li <renlin.li@arm.com>
* config/aarch64/aarch64.h (TARGET_CPU_CPP_BUILTINS): Define * config/aarch64/aarch64.h (TARGET_CPU_CPP_BUILTINS): Define
...@@ -871,11 +871,14 @@ recompute_probabilities (basic_block bb) ...@@ -871,11 +871,14 @@ recompute_probabilities (basic_block bb)
edge_iterator ei; edge_iterator ei;
FOR_EACH_EDGE (esucc, ei, bb->succs) FOR_EACH_EDGE (esucc, ei, bb->succs)
{ {
if (bb->count) if (!bb->count)
continue;
/* Prevent overflow computation due to insane profiles. */
if (esucc->count < bb->count)
esucc->probability = GCOV_COMPUTE_SCALE (esucc->count, esucc->probability = GCOV_COMPUTE_SCALE (esucc->count,
bb->count); bb->count);
if (esucc->probability > REG_BR_PROB_BASE) else
{
/* Can happen with missing/guessed probabilities, since we /* Can happen with missing/guessed probabilities, since we
may determine that more is flowing along duplicated may determine that more is flowing along duplicated
path than joiner succ probabilities allowed. path than joiner succ probabilities allowed.
...@@ -886,7 +889,6 @@ recompute_probabilities (basic_block bb) ...@@ -886,7 +889,6 @@ recompute_probabilities (basic_block bb)
redoing the profile estimation. */ redoing the profile estimation. */
esucc->probability = REG_BR_PROB_BASE; esucc->probability = REG_BR_PROB_BASE;
} }
}
} }
......
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