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Add configure test to see if the C compiler has gcc-style computed gotos.

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We'll need this for the upcoming patch to speed up expression evaluation.
Might as well push it now to see if it behaves sanely in the buildfarm.

Andres Freund

Discussion: https://postgr.es/m/20170320062511.hp5qeurtxrwsvfxr@alap3.anarazel.de
This commit is contained in:
Tom Lane
2017-03-20 13:35:21 -04:00
parent 14a72525d2
commit bc18126a6b
5 changed files with 65 additions and 0 deletions
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configure.in
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@ -1322,6 +1322,7 @@ PGAC_C_BUILTIN_BSWAP32
PGAC_C_BUILTIN_BSWAP64
PGAC_C_BUILTIN_CONSTANT_P
PGAC_C_BUILTIN_UNREACHABLE
PGAC_C_COMPUTED_GOTO
PGAC_C_VA_ARGS
PGAC_STRUCT_TIMEZONE
PGAC_UNION_SEMUN