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-rw-r--r--gcc/stor-layout.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/stor-layout.c b/gcc/stor-layout.c
index 159e2a8..294f2d4 100644
--- a/gcc/stor-layout.c
+++ b/gcc/stor-layout.c
@@ -1062,8 +1062,11 @@ compute_record_mode (type)
/* If this field is the whole struct, remember its mode so
that, say, we can put a double in a class into a DF
- register instead of forcing it to live in the stack. */
- if (field == TYPE_FIELDS (type) && TREE_CHAIN (field) == 0)
+ register instead of forcing it to live in the stack. However,
+ we don't support using such a mode if there is no integer mode
+ of the same size, so don't set it here. */
+ if (field == TYPE_FIELDS (type) && TREE_CHAIN (field) == 0
+ && int_mode_for_mode (DECL_MODE (field)) != BLKmode)
mode = DECL_MODE (field);
#ifdef STRUCT_FORCE_BLK