From 53662b791d5f860791fea476c6377438cc60f921 Mon Sep 17 00:00:00 2001
From: Jiaxun Yang <jiaxun.yang@flygoat.com>
Date: Tue, 12 May 2020 12:40:13 +0800
Subject: Bug 1430693 - IonMonkey: MIPS: Fix generic NaN for legacy mips (IEEE
 754-1985)

Tag: #1542
---
 js/public/Value.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'js')

diff --git a/js/public/Value.h b/js/public/Value.h
index 272d9b478..bc0fd0ec7 100644
--- a/js/public/Value.h
+++ b/js/public/Value.h
@@ -229,7 +229,11 @@ static inline JS::Value PoisonedObjectValue(JSObject* obj);
 namespace detail {
 
 constexpr int CanonicalizedNaNSignBit = 0;
+#if defined(__mips__) && !defined(__mips_nan2008)
+constexpr uint64_t CanonicalizedNaNSignificand = 0x7FFFFFFFFFFFFULL;
+#else
 constexpr uint64_t CanonicalizedNaNSignificand = 0x8000000000000ULL;
+#endif
 
 constexpr uint64_t CanonicalizedNaNBits =
     mozilla::SpecificNaNBits<double,
-- 
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