[AArch64][RegisterBankInfo] Use the generic implementation of copyCost.

Long term we may want to give high cost at FPR to/from GPR copies. llvm-svn: 272086
2016-06-08 01:24:00 +00:00 · 2016-06-08 01:24:00 +00:00 · a4ac7cdac2
parent a06ac07165
commit a4ac7cdac2
1 changed files with 2 additions and 1 deletions
--- a/llvm/lib/Target/AArch64/AArch64RegisterBankInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64RegisterBankInfo.cpp
@ -71,7 +71,8 @@ unsigned AArch64RegisterBankInfo::copyCost(const RegisterBank &A,
  // Will introduce other hooks for different size:
  // * extract cost.
  // * build_sequence cost.
-  return 0;
+  // TODO: Add more accurate cost for FPR to/from GPR.
+  return RegisterBankInfo::copyCost(A, B, Size);
 }

 const RegisterBank &AArch64RegisterBankInfo::getRegBankFromRegClass(