Marginal improvement for generated code in execExprInterp.c. Avoid the coding pattern "*op->resvalue = f();", as some compilers think that requires them to evaluate "op->resvalue" before the function call. Unless there are lots of free registers, this can lead to a useless register spill and reload across the call.
I changed all the cases like this in ExecInterpExpr(), but didn't bother in the out-of-line opcode eval subroutines, since those are presumably not as performance-critical. Discussion: https://postgr.es/m/2508.1506630...@sss.pgh.pa.us Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/136ab7c5a5f54fecea7c28c8550c19123245acf0 Modified Files -------------- src/backend/executor/execExprInterp.c | 59 +++++++++++++++++++++++++---------- 1 file changed, 42 insertions(+), 17 deletions(-) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
