From 085292adba8e6e7b3105b71abae82aff843f6708 Mon Sep 17 00:00:00 2001
From: Gabor Rapcsanyi <rgabor@webkit.org>
Date: Thu, 21 Mar 2013 15:36:39 +0100
Subject: LLInt CLoop backend misses Double2Ints() on 32bit architectures

https://bugs.webkit.org/show_bug.cgi?id=112141

Reviewed by Filip Pizlo.

Implement Double2Ints() in CLoop backend of LLInt on 32bit architectures.

* llint/LowLevelInterpreter.cpp:
(LLInt):
(JSC::LLInt::Double2Ints):
* offlineasm/cloop.rb:

Change-Id: I0617d06eda59afec2f0ddc7268ac1531f275f9ec
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145551 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Reviewed-by: Andras Becsi <andras.becsi@digia.com>
---
 Source/JavaScriptCore/llint/LowLevelInterpreter.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'Source/JavaScriptCore/llint/LowLevelInterpreter.cpp')

diff --git a/Source/JavaScriptCore/llint/LowLevelInterpreter.cpp b/Source/JavaScriptCore/llint/LowLevelInterpreter.cpp
index a9cb393b0..b2ce2483e 100644
--- a/Source/JavaScriptCore/llint/LowLevelInterpreter.cpp
+++ b/Source/JavaScriptCore/llint/LowLevelInterpreter.cpp
@@ -116,6 +116,17 @@ static double Ints2Double(uint32_t lo, uint32_t hi)
     u.ival64 = (static_cast<uint64_t>(hi) << 32) | lo;
     return u.dval;
 }
+
+static void Double2Ints(double val, uint32_t& lo, uint32_t& hi)
+{
+    union {
+        double dval;
+        uint64_t ival64;
+    } u;
+    u.dval = val;
+    hi = static_cast<uint32_t>(u.ival64 >> 32);
+    lo = static_cast<uint32_t>(u.ival64);
+}
 #endif // USE(JSVALUE32_64)
 
 } // namespace LLint
-- 
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