Use movw/movt instead of constant pool on ARMv7

src/platform-linux.cc

Index: src/platform-linux.cc
diff --git a/src/platform-linux.cc b/src/platform-linux.cc
index b9ce9d966d41ce8199b2a29b2c20e81cdd3efb9a..beb2ccee297fa062a8951fee7098a9f9b91a2de3 100644
--- a/src/platform-linux.cc
+++ b/src/platform-linux.cc
@@ -174,6 +174,24 @@ bool OS::ArmCpuHasFeature(CpuFeature feature) {
 }
 
 
+CpuImplementer OS::GetCpuImplementer() {
+  static bool use_cached_value = false;
+  static CpuImplementer cached_value = UNKNOWN_IMPLEMENTER;
+  if (use_cached_value) {
+    return cached_value;
+  }
+  if (CPUInfoContainsString("CPU implementer\t: 0x41")) {
+    cached_value = ARM_IMPLEMENTER;
+  } else if (CPUInfoContainsString("CPU implementer\t: 0x51")) {
+    cached_value = QUALCOMM_IMPLEMENTER;
+  } else {
+    cached_value = UNKNOWN_IMPLEMENTER;
+  }
+  use_cached_value = true;
+  return cached_value;
+}
+
+
 bool OS::ArmUsingHardFloat() {
   // GCC versions 4.6 and above define __ARM_PCS or __ARM_PCS_VFP to specify
   // the Floating Point ABI used (PCS stands for Procedure Call Standard).