Add m-esr52 at 52.6.0

1 files changed, 46 insertions, 0 deletions

diff --git a/js/src/jit/x64/BaselineIC-x64.cpp b/js/src/jit/x64/BaselineIC-x64.cpp
new file mode 100644
index 0000000000..f04052b0dd
--- /dev/null
+++ b/js/src/jit/x64/BaselineIC-x64.cpp
@@ -0,0 +1,46 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "jit/BaselineIC.h"
+#include "jit/SharedICHelpers.h"
+#include "jit/MacroAssembler-inl.h"
+
+using namespace js;
+using namespace js::jit;
+
+namespace js {
+namespace jit {
+
+// ICCompare_Int32
+
+bool
+ICCompare_Int32::Compiler::generateStubCode(MacroAssembler& masm)
+{
+    // Guard that R0 is an integer and R1 is an integer.
+    Label failure;
+    masm.branchTestInt32(Assembler::NotEqual, R0, &failure);
+    masm.branchTestInt32(Assembler::NotEqual, R1, &failure);
+
+    // Directly compare the int32 payload of R0 and R1.
+    ScratchRegisterScope scratch(masm);
+    Assembler::Condition cond = JSOpToCondition(op, /* signed = */true);
+    masm.mov(ImmWord(0), scratch);
+    masm.cmp32(R0.valueReg(), R1.valueReg());
+    masm.setCC(cond, scratch);
+
+    // Box the result and return
+    masm.boxValue(JSVAL_TYPE_BOOLEAN, scratch, R0.valueReg());
+    EmitReturnFromIC(masm);
+
+    // Failure case - jump to next stub
+    masm.bind(&failure);
+    EmitStubGuardFailure(masm);
+
+    return true;
+}
+
+} // namespace jit
+} // namespace js