commit 927a996d99df01bbe052965ff6c746f8727db046
author Shalini Salomi Bodapati <shalini.salomi.bodapati@intel.com> Fri Feb 11 18:01:22 2022 +0530
committer Ulya Trofimovich <skvadrik@google.com> Mon Feb 14 11:07:59 2022 +0000
tree 1eb89189132ad1e8b14e54d1005e3744bf0e6f51
parent 3bd485822201efe935173c769a84ae7be3b14928

x86/x86_64: Add rep_movs instructions

x86: This patch adds rep_movsb with tests
x86_64: This patch adds rep_movsb, rep_movsl with tests

Test: $ANDROID_HOST_OUT/nativetest{64}/art_compiler_host_tests/art_compiler_host_tests
Signed-off-by: Shalini Salomi Bodapati <shalini.salomi.bodapati@intel.com>
Change-Id: Ie49434c88e690007bdb7e773f746eae66b197574

compiler/utils/x86/assembler_x86.cc

diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index 4b64e92..861b27e 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -3735,6 +3735,11 @@
   EmitUint8(0xA5);
 }
 
+void X86Assembler::rep_movsl() {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0xF3);
+  EmitUint8(0xA5);
+}
 
 X86Assembler* X86Assembler::lock() {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);

compiler/utils/x86/assembler_x86.h

diff --git a/compiler/utils/x86/assembler_x86.h b/compiler/utils/x86/assembler_x86.h
index dc2427d..c346ba9 100644
--- a/compiler/utils/x86/assembler_x86.h
+++ b/compiler/utils/x86/assembler_x86.h
@@ -871,6 +871,7 @@
   void repe_cmpsw();
   void repe_cmpsl();
   void rep_movsb();
+  void rep_movsl();
   void rep_movsw();
 
   X86Assembler* lock();

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 5db2b65..89c73c0 100644
--- a/compiler/utils/x86/assembler_x86_test.cc
+++ b/compiler/utils/x86/assembler_x86_test.cc
@@ -464,6 +464,12 @@
   DriverStr(expected, "rep_movsw");
 }
 
+TEST_F(AssemblerX86Test, RepMovsl) {
+  GetAssembler()->rep_movsl();
+  const char* expected = "rep movsl\n";
+  DriverStr(expected, "rep_movsl");
+}
+
 TEST_F(AssemblerX86Test, Blsmask) {
   DriverStr(RepeatRR(&x86::X86Assembler::blsmsk, "blsmsk %{reg2}, %{reg1}"), "blsmsk");
 }