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Remove configure --disable-float4-byval

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This build option was only useful to maintain compatibility for
version-0 functions, but those are no longer supported, so this option
can be removed.

float4 is now always pass-by-value; the pass-by-reference code path is
completely removed.

Discussion: https://www.postgresql.org/message-id/flat/f3e1e576-2749-bbd7-2d57-3f9dcf75255a@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2019-11-21 18:00:07 +01:00
parent 43a54a3bcc
commit 2e4db241bf
24 changed files with 18 additions and 190 deletions
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23
src/include/postgres.h
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@ -659,11 +659,7 @@ extern Datum Int64GetDatum(int64 X);
/*
* DatumGetFloat4
* Returns 4-byte floating point value of a datum.
*
* Note: this macro hides whether float4 is pass by value or by reference.
*/
#ifdef USE_FLOAT4_BYVAL
static inline float4
DatumGetFloat4(Datum X)
{
@ -676,18 +672,11 @@ DatumGetFloat4(Datum X)
myunion.value = DatumGetInt32(X);
return myunion.retval;
}
#else
#define DatumGetFloat4(X) (* ((float4 *) DatumGetPointer(X)))
#endif
/*
* Float4GetDatum
* Returns datum representation for a 4-byte floating point number.
*
* Note: if float4 is pass by reference, this function returns a reference
* to palloc'd space.
*/
#ifdef USE_FLOAT4_BYVAL
static inline Datum
Float4GetDatum(float4 X)
{
@ -700,9 +689,6 @@ Float4GetDatum(float4 X)
myunion.value = X;
return Int32GetDatum(myunion.retval);
}
#else
extern Datum Float4GetDatum(float4 X);
#endif
/*
* DatumGetFloat8
@ -757,10 +743,9 @@ extern Datum Float8GetDatum(float8 X);
/*
* Int64GetDatumFast
* Float8GetDatumFast
* Float4GetDatumFast
*
* These macros are intended to allow writing code that does not depend on
* whether int64, float8, float4 are pass-by-reference types, while not
* whether int64 and float8 are pass-by-reference types, while not
* sacrificing performance when they are. The argument must be a variable
* that will exist and have the same value for as long as the Datum is needed.
* In the pass-by-ref case, the address of the variable is taken to use as
@ -776,10 +761,4 @@ extern Datum Float8GetDatum(float8 X);
#define Float8GetDatumFast(X) PointerGetDatum(&(X))
#endif
#ifdef USE_FLOAT4_BYVAL
#define Float4GetDatumFast(X) Float4GetDatum(X)
#else
#define Float4GetDatumFast(X) PointerGetDatum(&(X))
#endif
#endif /* POSTGRES_H */