From: Yoshinori Sato <ysato@users.sourceforge.jp>
Date: Wed, 29 Jan 2025 15:07:15 +0000 (-0700)
Subject: [PATCH] RX: Restrict displacement ranges in "Q" constraint
X-Git-Tag: basepoints/gcc-16~2280
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4318821562638a3d909942f561a42f7272ddfed4;p=thirdparty%2Fgcc.git

[PATCH] RX: Restrict displacement ranges in "Q" constraint

When using the "Q" constraint in the inline assembler, the displacement value
could exceed the range specified by the instruction.
To avoid this issue, a displacement range check is added to the "Q" constraint.

gcc/
	* config/rx/constraints.md (Q): Also check that the address
	passes rx_is_restricted_memory-address.
---

diff --git a/gcc/config/rx/constraints.md b/gcc/config/rx/constraints.md
index 4fc242667ab4..4b81ae6aa75b 100644
--- a/gcc/config/rx/constraints.md
+++ b/gcc/config/rx/constraints.md
@@ -80,7 +80,8 @@
        (ior (match_code "reg" "0")
 	    (and (match_code "plus" "0")
 	         (and (match_code "reg,subreg" "00")
-		      (match_code "const_int" "01")
+		      (and (match_code "const_int" "01")
+		           (match_test "rx_is_restricted_memory_address (XEXP (op, 0), mode)"))
 		 )
 	    )
        )