From b6c18e537eea70fa02f91ba21b63e1088e2afc20 Mon Sep 17 00:00:00 2001
From: Hannes Verschore <hv1989@gmail.com>
Date: Fri, 29 Jul 2016 16:53:48 +0200
Subject: [PATCH] Bug 1289054 - Part 3: Implement the 64bit variant of
 WrapInt64ToInt32 on arm, r=bbouvier

---
 js/src/jit/arm/CodeGenerator-arm.cpp | 9 +++++++++
 js/src/jit/arm/CodeGenerator-arm.h   | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/js/src/jit/arm/CodeGenerator-arm.cpp b/js/src/jit/arm/CodeGenerator-arm.cpp
index b638772c23af..9b20ab71d98f 100644
--- a/js/src/jit/arm/CodeGenerator-arm.cpp
+++ b/js/src/jit/arm/CodeGenerator-arm.cpp
@@ -3007,3 +3007,12 @@ CodeGeneratorARM::visitCopySignD(LCopySignD* ins)
     masm.as_vxfer(lhsi, InvalidReg, lhs, Assembler::FloatToCore, Assembler::Always, 0);
     masm.ma_vxfer(lhsi, rhsi, output);
 }
+
+void
+CodeGeneratorARM::visitWrapInt64ToInt32(LWrapInt64ToInt32* lir)
+{
+    const LInt64Allocation& input = lir->getInt64Operand(0);
+    Register output = ToRegister(lir->output());
+
+    masm.move32(ToRegister(input.low()), output);
+}
diff --git a/js/src/jit/arm/CodeGenerator-arm.h b/js/src/jit/arm/CodeGenerator-arm.h
index 83877be99bb3..424b9c893279 100644
--- a/js/src/jit/arm/CodeGenerator-arm.h
+++ b/js/src/jit/arm/CodeGenerator-arm.h
@@ -157,6 +157,8 @@ class CodeGeneratorARM : public CodeGeneratorShared
     virtual void visitTruncateDToInt32(LTruncateDToInt32* ins);
     virtual void visitTruncateFToInt32(LTruncateFToInt32* ins);
 
+    virtual void visitWrapInt64ToInt32(LWrapInt64ToInt32* lir);
+
     // Out of line visitors.
     void visitOutOfLineBailout(OutOfLineBailout* ool);
     void visitOutOfLineTableSwitch(OutOfLineTableSwitch* ool);