Remove check for SAHF support in ia32.

src/ia32/assembler-ia32.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 34 matching lines @@
 namespace v8 {
 namespace internal {
 
 // -----------------------------------------------------------------------------
 // Implementation of CpuFeatures
 
 void CpuFeatures::ProbeImpl(bool cross_compile) {
   CPU cpu;
   CHECK(cpu.has_sse2());  // SSE2 support is mandatory.
   CHECK(cpu.has_cmov());  // CMOV support is mandatory.
-  CHECK(cpu.has_sahf());  // SAHF must be available in compat/legacy mode.
-  supported_ |= 1u << SAHF;
   supported_ |= OS::CpuFeaturesImpliedByPlatform();
 
   // Only use statically determined features for cross compile (snapshot).
   if (cross_compile) return;
 
   if (cpu.has_sse41() && FLAG_enable_sse4_1) supported_ |= 1u << SSE4_1;
   if (cpu.has_sse3() && FLAG_enable_sse3) supported_ |= 1u << SSE3;
 }
 
 
@@ skipping 2563 matching lines @@
     fprintf(coverage_log, "%s\n", file_line);
     fflush(coverage_log);
   }
 }
 
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32