Remove check for SAHF support in ia32.

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index fea67e3c7b24280ede21a9df3a7d6aec72e861cc..cee926ffb04e12ab2fc9bac1e9cbf879ca0a0f1c 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -52,8 +52,6 @@ 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).