From 2ab70a4a5c2d5a9ffb923f13b1c3b938c60dd0f0 Mon Sep 17 00:00:00 2001
From: Xi Ruoyao <xry111@mengyan1223.wang>
Date: Wed, 9 Mar 2022 01:08:58 +0800
Subject: [PATCH] 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.
---
gcc/config/mips/mips.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/mips/mips.h b/gcc/config/mips/mips.h
index bf5c1d5a7092..0029864fdcdf 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. */
--
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