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6812721: Block's frequency should not be NaN

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Set MIN_BLOCK_FREQUENCY block's frequency when calculated block's frequency is NaN

Reviewed-by: never
This commit is contained in:
Vladimir Kozlov 2009-03-03 18:25:57 -08:00
parent 4b15cdadd3
commit 3e2ae68252
1 changed files with 2 additions and 1 deletions
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3
hotspot/src/share/vm/opto/gcm.cpp
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@ -1901,7 +1901,8 @@ void CFGLoop::scale_freq() {
for (int i = 0; i < _members.length(); i++) { for (int i = 0; i < _members.length(); i++) {
CFGElement* s = _members.at(i); CFGElement* s = _members.at(i);
float block_freq = s->_freq * loop_freq; float block_freq = s->_freq * loop_freq;
if (block_freq < MIN_BLOCK_FREQUENCY) block_freq = MIN_BLOCK_FREQUENCY; if (g_isnan(block_freq) || block_freq < MIN_BLOCK_FREQUENCY)
block_freq = MIN_BLOCK_FREQUENCY;
s->_freq = block_freq; s->_freq = block_freq;
} }
CFGLoop* ch = _child; CFGLoop* ch = _child;