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diff src/cpu/x86/vm/assembler_x86.cpp @ 20311:b1bc1af04c6e

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8052081: Optimize generated by C2 code for Intel's Atom processor Summary: Allow to execute vectorization and crc32 optimization on Atom. Enable UseFPUForSpilling by default on x86. Reviewed-by: roland
author kvn
date Tue, 05 Aug 2014 15:02:10 -0700
parents 78bbf4d43a14
children 166d744df0de
line wrap: on
line diff
--- a/src/cpu/x86/vm/assembler_x86.cpp	Tue Aug 12 15:17:46 2014 +0000
+++ b/src/cpu/x86/vm/assembler_x86.cpp	Tue Aug 05 15:02:10 2014 -0700
@@ -3854,6 +3854,15 @@
 }
 
 // Carry-Less Multiplication Quadword
+void Assembler::pclmulqdq(XMMRegister dst, XMMRegister src, int mask) {
+  assert(VM_Version::supports_clmul(), "");
+  int encode = simd_prefix_and_encode(dst, dst, src, VEX_SIMD_66, VEX_OPCODE_0F_3A);
+  emit_int8(0x44);
+  emit_int8((unsigned char)(0xC0 | encode));
+  emit_int8((unsigned char)mask);
+}
+
+// Carry-Less Multiplication Quadword
 void Assembler::vpclmulqdq(XMMRegister dst, XMMRegister nds, XMMRegister src, int mask) {
   assert(VM_Version::supports_avx() && VM_Version::supports_clmul(), "");
   bool vector256 = false;