AArch64: Add inlining support for ceil(), floor(), rint(), round()

This patch adds inlining support for the following Math, StrictMath
methods in the ARM64 backend:
  * double ceil(double)
  * double floor(double)
  * double rint(double)
  * long round(double)
  * int round(float)

Also some cleanup.

Change-Id: I9f5a2f4065b1313649f4b0c4380b8176703c3fe1
Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
diff --git a/compiler/dex/quick/gen_invoke.cc b/compiler/dex/quick/gen_invoke.cc
index 5fc6996..8e7f6a6 100755
--- a/compiler/dex/quick/gen_invoke.cc
+++ b/compiler/dex/quick/gen_invoke.cc
@@ -1427,6 +1427,22 @@
   return false;
 }
 
+bool Mir2Lir::GenInlinedCeil(CallInfo* info) {
+  return false;
+}
+
+bool Mir2Lir::GenInlinedFloor(CallInfo* info) {
+  return false;
+}
+
+bool Mir2Lir::GenInlinedRint(CallInfo* info) {
+  return false;
+}
+
+bool Mir2Lir::GenInlinedRound(CallInfo* info, bool is_double) {
+  return false;
+}
+
 bool Mir2Lir::GenInlinedFloatCvt(CallInfo* info) {
   if (cu_->instruction_set == kMips) {
     // TODO - add Mips implementation