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re PR target/36800 (va_arg for _Decimal128 on 32-bit Power mishandled in certain cases)

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PR target/36800

	PR target/36800
	* config/rs6000/rs6000.c (rs6000_gimplify_va_arg): Do not set
	regalign for the reg == fpr and TDmode case.

testsuite/
	* gcc.dg/dfp/pr36800.c: New.

Co-Authored-By: Joseph Myers <joseph@codesourcery.com>

From-SVN: r145859
This commit is contained in:
Ben Elliston 2009-04-09 21:26:44 +00:00 • committed by Ben Elliston
parent 52daca759f
commit e1ff19bf80
4 changed files with 44 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2009-04-10 Ben Elliston <bje@au.ibm.com>
PR target/36800
* config/rs6000/rs6000.c (rs6000_gimplify_va_arg): Do not set
regalign for the reg == fpr and TDmode case.
2009-04-09 David Ayers <ayers@fsfe.org>
PR objc/29200

1
gcc/config/rs6000/rs6000.c
View file

@ -7092,7 +7092,6 @@ rs6000_gimplify_va_arg (tree valist, tree type, gimple_seq *pre_p,
reg number is 0 for f1, so we want to make it odd. */
else if (reg == fpr && TYPE_MODE (type) == TDmode)
{
regalign = 1;
t = build2 (BIT_IOR_EXPR, TREE_TYPE (reg), unshare_expr (reg),
build_int_cst (TREE_TYPE (reg), 1));
u = build2 (MODIFY_EXPR, void_type_node, unshare_expr (reg), t);

6
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,9 @@
2009-04-10 Ben Elliston <bje@au.ibm.com>
Joseph Myers <joseph@codesourcery.com>
PR target/36800
* gcc.dg/dfp/pr36800.c: New.
2009-04-09 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Rafael Avila de Espindola <espindola@google.com>

32
gcc/testsuite/gcc.dg/dfp/pr36800.c Normal file
View file

@ -0,0 +1,32 @@
/* { dg-do run } */
/* { dg-options "-std=gnu99" } */
#include <stdarg.h>
extern void abort (void);
void
f (int a, ...)
{
va_list ap;
if (a != 0)
abort ();
va_start (ap, a);
if (va_arg (ap, _Decimal128) != 1.2DL)
abort ();
if (va_arg (ap, _Decimal128) != 2.34DL)
abort ();
if (va_arg (ap, _Decimal128) != 3.456DL)
abort ();
if (va_arg (ap, _Decimal128) != 4.567DL)
abort ();
if (va_arg (ap, double) != 5.125)
abort ();
va_end (ap);
}
int
main (void)
{
f (0, 1.2DL, 2.34DL, 3.456DL, 4.567DL, 5.125);
return 0;
}