diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2008-10-27 07:14:50 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-10-27 07:14:50 +0000 |
| commit | 23066288fdf4867f53f208f9aaf2952b1c049394 (patch) | |
| tree | 2bc4df159784221290c1aa16e2256ac55c523299 /include/llvm/Target/TargetInstrInfo.h | |
| parent | 0fd77a579bbed0fa06720474f1c5b2e3cd75004f (diff) | |
| download | external_llvm-23066288fdf4867f53f208f9aaf2952b1c049394.zip external_llvm-23066288fdf4867f53f208f9aaf2952b1c049394.tar.gz external_llvm-23066288fdf4867f53f208f9aaf2952b1c049394.tar.bz2 | |
For now, don't split live intervals around x87 stack register barriers. FpGET_ST0_80 must be right after a call instruction (and ADJCALLSTACKUP) so we need to find a way to prevent reload of x87 registers between them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58230 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Target/TargetInstrInfo.h')
| -rw-r--r-- | include/llvm/Target/TargetInstrInfo.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h index 2fdcf8b..a37e9e6 100644 --- a/include/llvm/Target/TargetInstrInfo.h +++ b/include/llvm/Target/TargetInstrInfo.h @@ -407,6 +407,13 @@ public: return false; } + /// IgnoreRegisterClassBarriers - Returns true if pre-register allocation + /// live interval splitting pass should ignore barriers of the specified + /// register class. + virtual bool IgnoreRegisterClassBarriers(const TargetRegisterClass *RC) const{ + return true; + } + /// getPointerRegClass - Returns a TargetRegisterClass used for pointer /// values. virtual const TargetRegisterClass *getPointerRegClass() const { @@ -425,7 +432,6 @@ public: /// GetFunctionSizeInBytes - Returns the size of the specified MachineFunction. /// virtual unsigned GetFunctionSizeInBytes(const MachineFunction &MF) const = 0; - }; /// TargetInstrInfoImpl - This is the default implementation of |