commit 71311f868e2579fa5d40b24e620198734119d1a0
author agicsaki <agicsaki@google.com> Mon Jul 27 11:34:13 2015 -0700
committer agicsaki <agicsaki@google.com> Mon Jul 27 13:48:44 2015 -0700
tree e206f2b7580ce1a3ddd354a5e2d4ea6caf670d49
parent 8ae3588989ea99d8c60f885e3d830e6e0c87ff5f

Added repe_cmpsw instruction to x86, x86_64 assemblers

Change-Id: I7634959eebb64d607f47497db320d5c2afdef16b

compiler/utils/x86/assembler_x86.cc

diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index fa85ada..44efc65 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -1515,6 +1515,14 @@
 }
 
 
+void X86Assembler::repe_cmpsw() {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0xF3);
+  EmitUint8(0xA7);
+}
+
+
 X86Assembler* X86Assembler::lock() {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xF0);

compiler/utils/x86/assembler_x86.h

diff --git a/compiler/utils/x86/assembler_x86.h b/compiler/utils/x86/assembler_x86.h
index d1b4e1d..e2abcde 100644
--- a/compiler/utils/x86/assembler_x86.h
+++ b/compiler/utils/x86/assembler_x86.h
@@ -465,6 +465,7 @@
   void jmp(Label* label);
 
   void repne_scasw();
+  void repe_cmpsw();
 
   X86Assembler* lock();
   void cmpxchgl(const Address& address, Register reg);

compiler/utils/x86/assembler_x86_test.cc

diff --git a/compiler/utils/x86/assembler_x86_test.cc b/compiler/utils/x86/assembler_x86_test.cc
index aacc57b..0e8c4ae 100644
--- a/compiler/utils/x86/assembler_x86_test.cc
+++ b/compiler/utils/x86/assembler_x86_test.cc
@@ -196,4 +196,10 @@
   DriverStr(expected, "Repnescasw");
 }
 
+TEST_F(AssemblerX86Test, Repecmpsw) {
+  GetAssembler()->repe_cmpsw();
+  const char* expected = "repe cmpsw\n";
+  DriverStr(expected, "Repecmpsw");
+}
+
 }  // namespace art