diff mbox series

[089/nnn] poly_int: expand_expr_real_1

Message ID 874lqpg423.fsf@linaro.org
State New
Headers show
Series [089/nnn] poly_int: expand_expr_real_1 | expand

Commit Message

Richard Sandiford Oct. 23, 2017, 5:35 p.m. UTC 
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.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@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.

Comments

Jeff Law Nov. 28, 2017, 8:32 a.m. UTC | #1 
On 10/23/2017 11:35 AM, Richard Sandiford wrote:
> 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.sandiford@linaro.org>

> 	    Alan Hayward  <alan.hayward@arm.com>

> 	    David Sherwood  <david.sherwood@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.

OK.
jeff
diff mbox series

Patch

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