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Improve implementation of pg_attribute_always_inline.

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Avoid compiler warnings on MSVC (which doesn't want to see both
__forceinline and inline) and ancient GCC (which doesn't have
__attribute__((always_inline))).

Don't force inline-ing when building at -O0, as the programmer is probably
hoping for exact source-to-object-line correspondence in that case.
(For the moment this only works for GCC; maybe we can extend it later.)

Make pg_attribute_always_inline be syntactically a drop-in replacement
for inline, rather than an additional wart.

And improve the comments.

Thomas Munro and Michail Nikolaev, small tweaks by me

Discussion: https://postgr.es/m/32278.1514863068@sss.pgh.pa.us
Discussion: https://postgr.es/m/CANtu0oiYp74brgntKOxgg1FK5+t8uQ05guSiFU6FYz_5KUhr6Q@mail.gmail.com
This commit is contained in:
Tom Lane
2018-01-23 23:07:13 -05:00
parent e0a0deca38
commit 434e6e1484
2 changed files with 13 additions and 7 deletions
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3
src/backend/executor/nodeHashjoin.c
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@ -161,8 +161,7 @@ static void ExecParallelHashJoinPartitionOuter(HashJoinState *node);
* the other one is "outer".
* ----------------------------------------------------------------
*/
pg_attribute_always_inline
static inline TupleTableSlot *
static pg_attribute_always_inline TupleTableSlot *
ExecHashJoinImpl(PlanState *pstate, bool parallel)
{
HashJoinState *node = castNode(HashJoinState, pstate);