Restore the behavior of frame lowering before my refactoring.

It turns out that ppc backend has really weird interdependencies
over different hooks and all stuff is fragile wrt small changes.
This should fix PR8749

llvm-svn: 122155

1 files changed, 6 insertions, 4 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCRegisterInfo.td b/llvm/lib/Target/PowerPC/PPCRegisterInfo.td
index 2fbd41bd84a..879f26700c6 100644
--- a/llvm/lib/Target/PowerPC/PPCRegisterInfo.td
+++ b/llvm/lib/Target/PowerPC/PPCRegisterInfo.td
@@ -301,12 +301,13 @@ def GPRC : RegisterClass<"PPC", [i32], 32,
       // When using the 32-bit SVR4 ABI, r13 is reserved for the Small Data Area
       // pointer.
       const PPCSubtarget &Subtarget = MF.getTarget().getSubtarget<PPCSubtarget>();
-      const TargetFrameInfo *TFI = MF.getTarget().getFrameInfo();
+      const PPCFrameInfo *PPCFI =
+        static_cast<const PPCFrameInfo*>(MF.getTarget().getFrameInfo());
    
       if (Subtarget.isPPC64() || Subtarget.isSVR4ABI())
         return end()-5;  // don't allocate R13, R31, R0, R1, LR
         
-      if (TFI->hasFP(MF))
+      if (PPCFI->needsFP(MF))
         return end()-4;  // don't allocate R31, R0, R1, LR
       else
         return end()-3;  // don't allocate R0, R1, LR
@@ -331,8 +332,9 @@ def G8RC : RegisterClass<"PPC", [i64], 64,
     }
     G8RCClass::iterator
     G8RCClass::allocation_order_end(const MachineFunction &MF) const {
-      const TargetFrameInfo *TFI = MF.getTarget().getFrameInfo();
-      if (TFI->hasFP(MF))
+      const PPCFrameInfo *PPCFI =
+        static_cast<const PPCFrameInfo*>(MF.getTarget().getFrameInfo());
+      if (PPCFI->needsFP(MF))
         return end()-5;
       else
         return end()-4;