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Allow float8, int8, and related datatypes to be passed by value on machines

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where Datum is 8 bytes wide.  Since this will break old-style C functions
(those still using version 0 calling convention) that have arguments or
results of these types, provide a configure option to disable it and retain
the old pass-by-reference behavior.  Likewise, provide a configure option
to disable the recently-committed float4 pass-by-value change.

Zoltan Boszormenyi, plus configurability stuff by me.
This commit is contained in:
Tom Lane
2008-04-21 00:26:47 +00:00
parent be939544a6
commit 8472bf7a73
36 changed files with 661 additions and 243 deletions
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35
contrib/btree_gist/btree_utils_num.c
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@ -1,20 +1,25 @@
#include "btree_gist.h"
#include "btree_utils_num.h"
#include "utils/cash.h"
#include "utils/date.h"
GISTENTRY *
gbt_num_compress(GISTENTRY *retval, GISTENTRY *entry, const gbtree_ninfo * tinfo)
{
if (entry->leafkey)
{
union
{
int16 i2;
int32 i4;
int64 i8;
float4 f4;
float8 f8;
DateADT dt;
TimeADT tm;
Timestamp ts;
Cash ch;
} v;
GBT_NUMKEY *r = (GBT_NUMKEY *) palloc0(2 * tinfo->size);
@ -30,17 +35,37 @@ gbt_num_compress(GISTENTRY *retval, GISTENTRY *entry, const gbtree_ninfo * tinfo
v.i4 = DatumGetInt32(entry->key);
leaf = &v.i4;
break;
case gbt_t_int8:
v.i8 = DatumGetInt64(entry->key);
leaf = &v.i8;
break;
case gbt_t_oid:
v.i4 = DatumGetObjectId(entry->key);
leaf = &v.i4;
break;
case gbt_t_float4:
v.f4 = DatumGetFloat4(entry->key);
leaf = &v.f4;
break;
case gbt_t_float8:
v.f8 = DatumGetFloat8(entry->key);
leaf = &v.f8;
break;
case gbt_t_date:
v.dt = DatumGetDateADT(entry->key);
leaf = &v.dt;
break;
case gbt_t_float4:
v.f4 = DatumGetFloat4(entry->key);
leaf = &v.f4;
case gbt_t_time:
v.tm = DatumGetTimeADT(entry->key);
leaf = &v.tm;
break;
case gbt_t_ts:
v.ts = DatumGetTimestamp(entry->key);
leaf = &v.ts;
break;
case gbt_t_cash:
v.ch = DatumGetCash(entry->key);
leaf = &v.ch;
break;
default:
leaf = DatumGetPointer(entry->key);