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expr.c (expand_assignment): Disable the bitfield += optimizations.

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* expr.c (expand_assignment): Disable the bitfield += optimizations.

	* gcc.c-torture/execute/20040629-1.c (FIELDS1, FIELDS2): Define to
	nothing if not yet defined.  Use it in b, c and d type definitions.
	* gcc.c-torture/execute/20040705-1.c: New test.
	* gcc.c-torture/execute/20040705-2.c: New test.

From-SVN: r84133
This commit is contained in:
Jakub Jelinek 2004-07-05 23:37:40 +02:00 committed by Jakub Jelinek
parent 7b61653a60
commit 7682ef833a
6 changed files with 28 additions and 4 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2004-07-05 Jakub Jelinek <jakub@redhat.com>
* expr.c (expand_assignment): Disable the bitfield += optimizations.
2004-07-05 Joseph S. Myers <jsm@polyomino.org.uk>
* doc/sourcebuild.texi: Revert previous patch.

4
gcc/expr.c
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@ -3802,7 +3802,9 @@ expand_assignment (tree to, tree from, int want_value)
MEM_KEEP_ALIAS_SET_P (to_rtx) = 1;
}
while (mode1 == VOIDmode && !want_value
/* Disabled temporarily. GET_MODE (to_rtx) is often not the right
mode. */
while (0 && mode1 == VOIDmode && !want_value
&& bitpos + bitsize <= BITS_PER_WORD
&& bitsize < BITS_PER_WORD
&& GET_MODE_BITSIZE (GET_MODE (to_rtx)) <= BITS_PER_WORD

7
gcc/testsuite/ChangeLog
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@ -1,3 +1,10 @@
2004-07-05 Jakub Jelinek <jakub@redhat.com>
* gcc.c-torture/execute/20040629-1.c (FIELDS1, FIELDS2): Define to
nothing if not yet defined. Use it in b, c and d type definitions.
* gcc.c-torture/execute/20040705-1.c: New test.
* gcc.c-torture/execute/20040705-2.c: New test.
2004-07-05 Giovanni Bajo <giovannibajo@gcc.gnu.org>
PR c++/2518

13
gcc/testsuite/gcc.c-torture/execute/20040629-1.c
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@ -4,9 +4,16 @@
extern void abort (void);
extern void exit (int);
struct { unsigned int i : 6, j : 11, k : 15; } b;
struct { unsigned int i : 5, j : 1, k : 26; } c;
struct { unsigned int i : 16, j : 8, k : 8; } d;
#ifndef FIELDS1
#define FIELDS1
#endif
#ifndef FIELDS2
#define FIELDS2
#endif
struct { FIELDS1 unsigned int i : 6, j : 11, k : 15; FIELDS2 } b;
struct { FIELDS1 unsigned int i : 5, j : 1, k : 26; FIELDS2 } c;
struct { FIELDS1 unsigned int i : 16, j : 8, k : 8; FIELDS2 } d;
unsigned int ret1 (void) { return b.i; }
unsigned int ret2 (void) { return b.j; }

2
gcc/testsuite/gcc.c-torture/execute/20040705-1.c Normal file
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@ -0,0 +1,2 @@
#define FIELDS1 long long l;
#include "20040629-1.c"

2
gcc/testsuite/gcc.c-torture/execute/20040705-2.c Normal file
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@ -0,0 +1,2 @@
#define FIELDS2 long long l;
#include "20040629-1.c"