X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=blobdiff_plain;f=lib%2FTarget%2FWebAssembly%2FWebAssemblyFrameLowering.cpp;fp=lib%2FTarget%2FWebAssembly%2FWebAssemblyFrameLowering.cpp;h=fec94554833b137dff53d0d37e74eb71de86112c;hp=3d9050ae216ba787336ae8d69d2a72d6ea0d8a19;hb=b18e7bdac85c58f5b3389e579b3abe9e78ad3f9a;hpb=6f3ab8dd7bdc013712d8b592c0349e1163a19277

diff --git a/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp b/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
index 3d9050ae216..fec94554833 100644
--- a/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
+++ b/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
@@ -39,7 +39,12 @@ using namespace llvm;
 /// Return true if the specified function should have a dedicated frame pointer
 /// register.
 bool WebAssemblyFrameLowering::hasFP(const MachineFunction &MF) const {
-  llvm_unreachable("TODO: implement hasFP");
+  const MachineFrameInfo *MFI = MF.getFrameInfo();
+  const auto *RegInfo = static_cast<const WebAssemblyRegisterInfo *>(
+      MF.getSubtarget().getRegisterInfo());
+  return MFI->hasCalls() || MFI->hasVarSizedObjects() ||
+         MFI->isFrameAddressTaken() || MFI->hasStackMap() ||
+         MFI->hasPatchPoint() || RegInfo->needsStackRealignment(MF);
 }
 
 /// Under normal circumstances, when a frame pointer is not required, we reserve
@@ -60,16 +65,10 @@ void WebAssemblyFrameLowering::eliminateCallFramePseudoInstr(
 
 void WebAssemblyFrameLowering::emitPrologue(MachineFunction &MF,
                                             MachineBasicBlock &MBB) const {
-  llvm_unreachable("TODO: implement emitPrologue");
+  // FIXME: Implement WebAssemblyFrameLowering::emitPrologue.
 }
 
 void WebAssemblyFrameLowering::emitEpilogue(MachineFunction &MF,
                                             MachineBasicBlock &MBB) const {
   llvm_unreachable("TODO: implement emitEpilogue");
 }
-
-void WebAssemblyFrameLowering::determineCalleeSaves(MachineFunction &MF,
-                                                    BitVector &SavedRegs,
-                                                    RegScavenger *RS) const {
-  llvm_unreachable("TODO: implement determineCalleeSaves");
-}