SIMD pavgb,w for x86/x86_64
Rationale:
Break-out CL of ART Vectorizer.
Enables fast halving add with rounding
Bug: 34083438
Test: assembler_x86[_64]_test
Change-Id: I09173376b803d671a6b05a33e630f45f778cea52
diff --git a/compiler/utils/x86/assembler_x86.cc b/compiler/utils/x86/assembler_x86.cc
index 5307dc0..9c934b7 100644
--- a/compiler/utils/x86/assembler_x86.cc
+++ b/compiler/utils/x86/assembler_x86.cc
@@ -1221,6 +1221,24 @@
}
+void X86Assembler::pavgb(XmmRegister dst, XmmRegister src) {
+ AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+ EmitUint8(0x66);
+ EmitUint8(0x0F);
+ EmitUint8(0xE0);
+ EmitXmmRegisterOperand(dst, src);
+}
+
+
+void X86Assembler::pavgw(XmmRegister dst, XmmRegister src) {
+ AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+ EmitUint8(0x66);
+ EmitUint8(0x0F);
+ EmitUint8(0xE3);
+ EmitXmmRegisterOperand(dst, src);
+}
+
+
void X86Assembler::pcmpeqb(XmmRegister dst, XmmRegister src) {
AssemblerBuffer::EnsureCapacity ensured(&buffer_);
EmitUint8(0x66);
diff --git a/compiler/utils/x86/assembler_x86.h b/compiler/utils/x86/assembler_x86.h
index f52cf16..b87522a 100644
--- a/compiler/utils/x86/assembler_x86.h
+++ b/compiler/utils/x86/assembler_x86.h
@@ -495,6 +495,9 @@
void orps(XmmRegister dst, XmmRegister src);
void por(XmmRegister dst, XmmRegister src);
+ void pavgb(XmmRegister dst, XmmRegister src); // no addr variant (for now)
+ void pavgw(XmmRegister dst, XmmRegister src);
+
void pcmpeqb(XmmRegister dst, XmmRegister src);
void pcmpeqw(XmmRegister dst, XmmRegister src);
void pcmpeqd(XmmRegister dst, XmmRegister src);
diff --git a/compiler/utils/x86/assembler_x86_test.cc b/compiler/utils/x86/assembler_x86_test.cc
index 2304907..a01eb6d 100644
--- a/compiler/utils/x86/assembler_x86_test.cc
+++ b/compiler/utils/x86/assembler_x86_test.cc
@@ -605,6 +605,14 @@
DriverStr(RepeatFF(&x86::X86Assembler::por, "por %{reg2}, %{reg1}"), "por");
}
+TEST_F(AssemblerX86Test, PAvgB) {
+ DriverStr(RepeatFF(&x86::X86Assembler::pavgb, "pavgb %{reg2}, %{reg1}"), "pavgb");
+}
+
+TEST_F(AssemblerX86Test, PAvgW) {
+ DriverStr(RepeatFF(&x86::X86Assembler::pavgw, "pavgw %{reg2}, %{reg1}"), "pavgw");
+}
+
TEST_F(AssemblerX86Test, PCmpeqB) {
DriverStr(RepeatFF(&x86::X86Assembler::pcmpeqb, "pcmpeqb %{reg2}, %{reg1}"), "cmpeqb");
}