In gcc/:

	* config/rs6000/sysv4.h (BIGGEST_ALIGNMENT): Don't define.
In gcc/testsuite/:
	* gcc.dg/ppc-ldstruct.c: New test.

From-SVN: r50503

gcc/ChangeLog

+2002-03-09  Geoffrey Keating  <geoffk@redhat.com>
+
+	* config/rs6000/sysv4.h (BIGGEST_ALIGNMENT): Don't define.
+
 2002-03-09  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/5877

gcc/config/rs6000/sysv4.h

@@ -383,14 +383,6 @@ do {									\
 /* Real stack boundary as mandated by the appropriate ABI.  */
 #define ABI_STACK_BOUNDARY ((TARGET_EABI && !TARGET_ALTIVEC_ABI) ? 64 : 128)
 
-/* No data type wants to be aligned rounder than this.  */
-/* FIXME: This should be keyed off of TARGET_ALTIVEC_ABI instead but
-   TARGET_ALTIVEC_ABI uses rs6000_altivec_abi which is only defined in
-   rs6000.c.  Consequently, genconstants will fail to link because it
-   uses rtl.c which uses BIGGEST_ALIGNMENT.  */
-#undef	BIGGEST_ALIGNMENT
-#define BIGGEST_ALIGNMENT ((TARGET_EABI && !TARGET_ALTIVEC) ? 64 : 128)
-
 /* An expression for the alignment of a structure field FIELD if the
    alignment computed in the usual way is COMPUTED.  */
 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED)				      \

gcc/testsuite/ChangeLog

+2002-03-09  Geoffrey Keating  <geoffk@redhat.com>
+
+	* gcc.dg/ppc-ldstruct.c: New test.
+
 2002-03-09  Jakub Jelinek  <jakub@redhat.com>
 
 	* gcc.c-torture/execute/va-arg-22.c: New test.

gcc/testsuite/gcc.dg/ppc-ldstruct.c

+/* { dg-do run { target powerpc*-*-eabi* powerpc*-*-elf* powerpc*-*-linux* } } */
+/* { dg-options "-O -mlong-double-128" } */
+
+/* SVR4 and EABI both specify that 'long double' is aligned to a 128-bit
+   boundary in structures.  */
+
+struct {
+  int x;
+  long double d;
+} s;
+
+int main(void)
+{
+  if (sizeof (s) != 32)
+    abort ();
+  if ((char *)&s.d - (char *)&s != 16)
+    abort ();
+  exit (0);
+}