Thread: pgsql: Don't generate EEOP_*_FETCHSOME operations for slots know to be
Don't generate EEOP_*_FETCHSOME operations for slots know to be virtual. That avoids unnecessary work during both interpreted execution, and JIT compiled expression evaluation. Both benefit from fewer expression steps needing be processed, and for interpreted execution there now is a fastpath dedicated to just fetching a value from a virtual slot. That's e.g. beneficial for hashjoins over nodes that perform projections, as the hashed columns are currently fetched individually. Author: Soumyadeep Chakraborty, Andres Freund Discussion: https://postgr.es/m/CAE-ML+9OKSN71+mHtfMD-L24oDp8dGTfaVjDU6U+j+FNAW5kRQ@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/36d22dd95bc87ca68e742da91f47f8826f8758c9 Modified Files -------------- src/backend/executor/execExpr.c | 43 +++++++---- src/backend/executor/execExprInterp.c | 133 +++++++++++++++++++++++++++++++++- src/backend/jit/llvm/llvmjit_expr.c | 6 +- 3 files changed, 160 insertions(+), 22 deletions(-)