On 01/15/2016 07:00 PM, Richard Sandiford wrote:
Calling redirect_edge_var_map_empty after each pass was slowing things
down because hash_table::empty () cleared all slots even if the hash
table was already empty.

Tested on x86_64-linux-gnu, where it gives a 1% compile time improvement
for fold-const.ii at -O and -O2.  OK to install?

Ok.


Bernd

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