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* [gcc r12-3178] aix: packed struct alignment [PR102068]
@ 2021-08-27  1:16 David Edelsohn
  0 siblings, 0 replies; only message in thread
From: David Edelsohn @ 2021-08-27  1:16 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:5faf7120398c9bf290758891a975da1f727d631a

commit r12-3178-g5faf7120398c9bf290758891a975da1f727d631a
Author: David Edelsohn <dje.gcc@gmail.com>
Date:   Thu Aug 26 17:14:18 2021 -0400

    aix: packed struct alignment [PR102068]
    
    Further fixes to structure alignment when the structure is packed
    and contains double.  This patch checks for packed attribute
    at the top level.
    
    gcc/ChangeLog:
    
            PR target/102068
            * config/rs6000/rs6000.c (rs6000_adjust_field_align): Use
            computed alignment if the entire struct has attribute packed.

Diff:
---
 gcc/config/rs6000/rs6000.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index e073b26b430..05fb6aad4b0 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -7955,7 +7955,7 @@ rs6000_slow_unaligned_access (machine_mode mode, unsigned int align)
 unsigned int
 rs6000_special_adjust_field_align (tree type, unsigned int computed)
 {
-  if (computed <= 32)
+  if (computed <= 32 || TYPE_PACKED (type))
     return computed;
 
   /* Strip initial arrays.  */


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