[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: I232d2b6e9ecf373beb5cc63698dd97a658ff9c83

4 files changed, 30 insertions, 1 deletions

diff --git a/compiler/utils/x86_64/assembler_x86_64.cc b/compiler/utils/x86_64/assembler_x86_64.cc
index dff3849..2b7ec0f 100644
--- a/compiler/utils/x86_64/assembler_x86_64.cc
+++ b/compiler/utils/x86_64/assembler_x86_64.cc
@@ -700,6 +700,24 @@ void X86_64Assembler::comisd(XmmRegister a, XmmRegister b) {
   EmitXmmRegisterOperand(a.LowBits(), b);
 }
 
+void X86_64Assembler::ucomiss(XmmRegister a, XmmRegister b) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitOptionalRex32(a, b);
+  EmitUint8(0x0F);
+  EmitUint8(0x2E);
+  EmitXmmRegisterOperand(a.LowBits(), b);
+}
+
+
+void X86_64Assembler::ucomisd(XmmRegister a, XmmRegister b) {
+  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+  EmitUint8(0x66);
+  EmitOptionalRex32(a, b);
+  EmitUint8(0x0F);
+  EmitUint8(0x2E);
+  EmitXmmRegisterOperand(a.LowBits(), b);
+}
+
 
 void X86_64Assembler::sqrtsd(XmmRegister dst, XmmRegister src) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
diff --git a/compiler/utils/x86_64/assembler_x86_64.h b/compiler/utils/x86_64/assembler_x86_64.h
index ab1bc9e..929ed31 100644
--- a/compiler/utils/x86_64/assembler_x86_64.h
+++ b/compiler/utils/x86_64/assembler_x86_64.h
@@ -344,6 +344,8 @@ class X86_64Assembler FINAL : public Assembler {
 
   void comiss(XmmRegister a, XmmRegister b);
   void comisd(XmmRegister a, XmmRegister b);
+  void ucomiss(XmmRegister a, XmmRegister b);
+  void ucomisd(XmmRegister a, XmmRegister b);
 
   void sqrtsd(XmmRegister dst, XmmRegister src);
   void sqrtss(XmmRegister dst, XmmRegister src);
diff --git a/compiler/utils/x86_64/assembler_x86_64_test.cc b/compiler/utils/x86_64/assembler_x86_64_test.cc
index 14a98b9..c8e923c 100644
--- a/compiler/utils/x86_64/assembler_x86_64_test.cc
+++ b/compiler/utils/x86_64/assembler_x86_64_test.cc
@@ -660,6 +660,14 @@ TEST_F(AssemblerX86_64Test, Comisd) {
   DriverStr(RepeatFF(&x86_64::X86_64Assembler::comisd, "comisd %{reg2}, %{reg1}"), "comisd");
 }
 
+TEST_F(AssemblerX86_64Test, Ucomiss) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::ucomiss, "ucomiss %{reg2}, %{reg1}"), "ucomiss");
+}
+
+TEST_F(AssemblerX86_64Test, Ucomisd) {
+  DriverStr(RepeatFF(&x86_64::X86_64Assembler::ucomisd, "ucomisd %{reg2}, %{reg1}"), "ucomisd");
+}
+
 TEST_F(AssemblerX86_64Test, Sqrtss) {
   DriverStr(RepeatFF(&x86_64::X86_64Assembler::sqrtss, "sqrtss %{reg2}, %{reg1}"), "sqrtss");
 }
diff --git a/compiler/utils/x86_64/constants_x86_64.h b/compiler/utils/x86_64/constants_x86_64.h
index 2a5b43d..0c782d4 100644
--- a/compiler/utils/x86_64/constants_x86_64.h
+++ b/compiler/utils/x86_64/constants_x86_64.h
@@ -105,7 +105,8 @@ enum Condition {
   kZero         = kEqual,
   kNotZero      = kNotEqual,
   kNegative     = kSign,
-  kPositive     = kNotSign
+  kPositive     = kNotSign,
+  kUnordered    = kParityEven
 };