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Add special case fast-paths for strict functions

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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
This commit is contained in:
Daniel Gustafsson
2025-03-11 12:02:42 +01:00
parent 8dd7c7cd0a
commit d35d32d711
4 changed files with 96 additions and 5 deletions
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7
src/backend/jit/llvm/llvmjit_expr.c
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@@ -662,12 +662,16 @@ llvm_compile_expr(ExprState *state)
case EEOP_FUNCEXPR:
case EEOP_FUNCEXPR_STRICT:
case EEOP_FUNCEXPR_STRICT_1:
case EEOP_FUNCEXPR_STRICT_2:
{
FunctionCallInfo fcinfo = op->d.func.fcinfo_data;
LLVMValueRef v_fcinfo_isnull;
LLVMValueRef v_retval;
if (opcode == EEOP_FUNCEXPR_STRICT)
if (opcode == EEOP_FUNCEXPR_STRICT ||
opcode == EEOP_FUNCEXPR_STRICT_1 ||
opcode == EEOP_FUNCEXPR_STRICT_2)
{
LLVMBasicBlockRef b_nonull;
LLVMBasicBlockRef *b_checkargnulls;
@@ -2482,6 +2486,7 @@ llvm_compile_expr(ExprState *state)
}
case EEOP_AGG_STRICT_INPUT_CHECK_ARGS:
case EEOP_AGG_STRICT_INPUT_CHECK_ARGS_1:
case EEOP_AGG_STRICT_INPUT_CHECK_NULLS:
{
int nargs = op->d.agg_strict_input_check.nargs;