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| author | Chad Rosier <mcrosier@codeaurora.org> | 2014-04-17 16:19:54 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@codeaurora.org> | 2014-04-17 16:19:54 +0000 |
| commit | fa477d98372cfe4da06a8be6fc687ee8a78800d9 (patch) | |
| tree | feab6b154f3600c502fc16a27316c19ad11ed2b4 /lib | |
| parent | 207be301e37ec95ba0cfe53d927c47722ee3e3ce (diff) | |
| download | llvm-fa477d98372cfe4da06a8be6fc687ee8a78800d9.tar.gz llvm-fa477d98372cfe4da06a8be6fc687ee8a78800d9.tar.bz2 llvm-fa477d98372cfe4da06a8be6fc687ee8a78800d9.tar.xz | |
[AArch64] Implement the getCSRFirstUseCost API, mirroring that in ARM64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206473 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/AArch64/AArch64RegisterInfo.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Target/AArch64/AArch64RegisterInfo.h b/lib/Target/AArch64/AArch64RegisterInfo.h index bb26f1ac9a..5e9542a4dc 100644 --- a/lib/Target/AArch64/AArch64RegisterInfo.h +++ b/lib/Target/AArch64/AArch64RegisterInfo.h @@ -30,6 +30,13 @@ struct AArch64RegisterInfo : public AArch64GenRegisterInfo { const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF = 0) const; const uint32_t *getCallPreservedMask(CallingConv::ID) const; + unsigned getCSRFirstUseCost() const { + // The cost will be compared against BlockFrequency where entry has the + // value of 1 << 14. A value of 5 will choose to spill or split really + // cold path instead of using a callee-saved register. + return 5; + } + const uint32_t *getTLSDescCallPreservedMask() const; BitVector getReservedRegs(const MachineFunction &MF) const; |