From: Xi Ruoyao <xry111@mengyan1223.wang>
Date: Tue, 8 Mar 2022 17:08:58 +0000 (+0800)
Subject: mips: avoid signed overflow in LUI_OPERAND [PR104842]
X-Git-Tag: upstream/12.2.0~1142
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2ab70a4a5c2d5a9ffb923f13b1c3b938c60dd0f0;p=platform%2Fupstream%2Fgcc.git

mips: avoid signed overflow in LUI_OPERAND [PR104842]

gcc/

	PR target/104842
	* config/mips/mips.h (LUI_OPERAND): Cast the input to an unsigned
	value before adding an offset.
---

diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index bf5c1d5a709..0029864fdcd 100644
--- a/gcc/config/mips/mips.h
+++ b/gcc/config/mips/mips.h
@@ -2309,7 +2309,7 @@ enum reg_class
 
 #define LUI_OPERAND(VALUE)					\
   (((VALUE) | 0x7fff0000) == 0x7fff0000				\
-   || ((VALUE) | 0x7fff0000) + 0x10000 == 0)
+   || ((unsigned HOST_WIDE_INT) (VALUE) | 0x7fff0000) + 0x10000 == 0)
 
 /* Return a value X with the low 16 bits clear, and such that
    VALUE - X is a signed 16-bit value.  */