This patch makes the VIEW_CONVERT_EXPR handling in expand_expr_real_1
cope with polynomial type and mode sizes.
2017-10-23 Richard Sandiford <richard.sandif...@linaro.org>
Alan Hayward <alan.hayw...@arm.com>
David Sherwood <david.sherw...@arm.com>
gcc/
* expr.c (expand_expr_real_1): Use tree_to_poly_uint64
instead of int_size_in_bytes when handling VIEW_CONVERT_EXPRs
via stack temporaries. Treat the mode size as polynomial too.
Index: gcc/expr.c
===================================================================
--- gcc/expr.c 2017-10-23 17:25:34.105013764 +0100
+++ gcc/expr.c 2017-10-23 17:25:35.142976454 +0100
@@ -11116,9 +11116,10 @@ expand_expr_real_1 (tree exp, rtx target
else if (STRICT_ALIGNMENT)
{
tree inner_type = TREE_TYPE (treeop0);
- HOST_WIDE_INT temp_size
- = MAX (int_size_in_bytes (inner_type),
- (HOST_WIDE_INT) GET_MODE_SIZE (mode));
+ poly_uint64 mode_size = GET_MODE_SIZE (mode);
+ poly_uint64 op0_size
+ = tree_to_poly_uint64 (TYPE_SIZE_UNIT (inner_type));
+ poly_int64 temp_size = upper_bound (op0_size, mode_size);
rtx new_rtx
= assign_stack_temp_for_type (mode, temp_size, type);
rtx new_with_op0_mode
