Horton

Add special case fast-paths for strict functions

Daniel Gustafsson <dgustafsson@postgresql.org>

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Commit: d35d32d7112bc632c6a305e9dffdec0082bbdf00
Author: Daniel Gustafsson <dgustafsson@postgresql.org>
Date: 2025-03-11T11:02:42Z
Releases: 18.0 
Add special case fast-paths for strict functions

Many STRICT function calls will have one or two arguments, in which
case we can speed up checking for NULL input by avoiding setting up
a loop over the arguments. This adds EEOP_FUNCEXPR_STRICT_1 and the
corresponding EEOP_FUNCEXPR_STRICT_2 for functions with one and two
arguments respectively.

Author: Andres Freund <andres@anarazel.de>
Co-authored-by: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Andreas Karlsson <andreas@proxel.se>
Discussion: https://postgr.es/m/415721CE-7D2E-4B74-B5D9-1950083BA03E@yesql.se
Discussion: https://postgr.es/m/20191023163849.sosqbfs5yenocez3@alap3.anarazel.de

Files

PathChange+/−
src/backend/executor/execExpr.c modified +12 −1
src/backend/executor/execExprInterp.c modified +73 −1
src/backend/jit/llvm/llvmjit_expr.c modified +6 −1
src/include/executor/execExpr.h modified +5 −2

Discussion