Add popcnt support for pnacl

base/cpu_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/cpu.h"
 #include "build/build_config.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 #if _MSC_VER >= 1700
@@ skipping 39 matching lines @@
   if (cpu.has_sse41()) {
     // Execute an SSE 4.1 instruction.
     __asm__ __volatile__("pmuldq %%xmm0, %%xmm0\n" : : : "xmm0");
   }
 
   if (cpu.has_sse42()) {
     // Execute an SSE 4.2 instruction.
     __asm__ __volatile__("crc32 %%eax, %%eax\n" : : : "eax");
   }
 
+  if (cpu.has_popcnt()) {
+    // Execute a POPCNT instruction.
+    __asm__ __volatile__("popcnt %%eax, %%eax\n" : : : "eax");
+  }
+
   if (cpu.has_avx()) {
     // Execute an AVX instruction.
     __asm__ __volatile__("vzeroupper\n" : : : "xmm0");
   }
 
   if (cpu.has_avx2()) {
     // Execute an AVX 2 instruction.
     __asm__ __volatile__("vpunpcklbw %%ymm0, %%ymm0, %%ymm0\n" : : : "xmm0");
   }
 
@@ skipping 23 matching lines @@
   if (cpu.has_sse41()) {
     // Execute an SSE 4.1 instruction.
     __asm pmuldq xmm0, xmm0;
   }
 
   if (cpu.has_sse42()) {
     // Execute an SSE 4.2 instruction.
     __asm crc32 eax, eax;
   }
 
+  if (cpu.has_popcnt()) {
+    // Execute a POPCNT instruction.
+    __asm popcnt eax, eax;
+  }
+
 // Visual C 2012 required for AVX.
 #if _MSC_VER >= 1700
   if (cpu.has_avx()) {
     // Execute an AVX instruction.
     __asm vzeroupper;
   }
 
   if (cpu.has_avx2()) {
     // Execute an AVX 2 instruction.
     __asm vpunpcklbw ymm0, ymm0, ymm0
   }
 #endif  // _MSC_VER >= 1700
 #endif  // defined(COMPILER_GCC)
 #endif  // defined(ARCH_CPU_X86_FAMILY)
 }