From: Richard Sandiford <richard.sandiford@arm.com>
Date: Wed, 21 May 2025 09:01:26 +0000 (+0100)
Subject: xstormy16: Avoid accessing beyond the operands[] array
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=856f6de5d19257e3c5802a250e7c749ca44beee3;p=thirdparty%2Fgcc.git

xstormy16: Avoid accessing beyond the operands[] array

The negsi2 C++ code writes to operands[2] even though the pattern
has no operand 2.

gcc/
	* config/stormy16/stormy16.md (negsi2): Remove unused assignment.
---

diff --git a/gcc/config/stormy16/stormy16.md b/gcc/config/stormy16/stormy16.md
index 70c82827a4a..15c60ad0388 100644
--- a/gcc/config/stormy16/stormy16.md
+++ b/gcc/config/stormy16/stormy16.md
@@ -702,8 +702,7 @@
   [(parallel [(set (match_operand:SI 0 "register_operand" "")
 		   (neg:SI (match_operand:SI 1 "register_operand" "")))
 	      (clobber (reg:BI CARRY_REG))])]
-  ""
-  { operands[2] = gen_reg_rtx (HImode); })
+  "")
 
 (define_insn_and_split "*negsi2_internal"
   [(set (match_operand:SI 0 "register_operand" "=&r")