[optimizing compiler] Add CMP{L,G}_{FLOAT,DOUBLE}

- adds float comparison for arm, x86, x86_64 backends.
- adds ucomis{s,d} assembly to x86 and x86_64.

Change-Id: Ie91e04bfb402025073054f3803a3a569e4705caa

1 files changed, 17 insertions, 0 deletions

diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index a297ea3b6e..b118f9a81a 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -613,6 +613,23 @@ void X86Assembler::comisd(XmmRegister a, XmmRegister b) {
 }
 
 
+void X86Assembler::ucomiss(XmmRegister a, XmmRegister b) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x0F);
+  EmitUint8(0x2E);
+  EmitXmmRegisterOperand(a, b);
+}
+
+
+void X86Assembler::ucomisd(XmmRegister a, XmmRegister b) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitUint8(0x0F);
+  EmitUint8(0x2E);
+  EmitXmmRegisterOperand(a, b);
+}
+
+
 void X86Assembler::sqrtsd(XmmRegister dst, XmmRegister src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xF2);