Have MachineFunction cache a pointer to the subtarget to make lookups

shorter/easier and have the DAG use that to do the same lookup. This
can be used in the future for TargetMachine based caching lookups from
the MachineFunction easily.

Update the MIPS subtarget switching machinery to update this pointer
at the same time it runs.

llvm-svn: 214838

1 files changed, 1 insertions, 2 deletions

diff --git a/llvm/lib/Target/R600/R600ExpandSpecialInstrs.cpp b/llvm/lib/Target/R600/R600ExpandSpecialInstrs.cpp
index 04b03c24eaa..211d392e8fc 100644
--- a/llvm/lib/Target/R600/R600ExpandSpecialInstrs.cpp
+++ b/llvm/lib/Target/R600/R600ExpandSpecialInstrs.cpp
@@ -66,8 +66,7 @@ void R600ExpandSpecialInstrsPass::SetFlagInNewMI(MachineInstr *NewMI,
 }
 
 bool R600ExpandSpecialInstrsPass::runOnMachineFunction(MachineFunction &MF) {
-  TII = static_cast<const R600InstrInfo *>(
-      MF.getTarget().getSubtargetImpl()->getInstrInfo());
+  TII = static_cast<const R600InstrInfo *>(MF.getSubtarget().getInstrInfo());
 
   const R600RegisterInfo &TRI = TII->getRegisterInfo();