[AMDGPU][NFC]: Remove unnecessary MFI functions

Summary:
  hasHostcallPtr() and hasHeapPtr() are only used in metadata emit.
However, we can use the corresponding function attributes directly
instead introducing the functions.

Reviewers: arsenm

Differential Revision: https://reviews.llvm.org/D122600

Author: changpeng

llvm/lib/Target/AMDGPU/AMDGPUHSAMetadataStreamer.cpp

@@ -794,7 +794,6 @@ void MetadataStreamerV3::emitHiddenKernelArgs(const MachineFunction &MF,
                                               msgpack::ArrayDocNode Args) {
   auto &Func = MF.getFunction();
   const GCNSubtarget &ST = MF.getSubtarget<GCNSubtarget>();
-  const SIMachineFunctionInfo &MFI = *MF.getInfo<SIMachineFunctionInfo>();
 
   unsigned HiddenArgNumBytes = ST.getImplicitArgNumBytes(Func);
   if (!HiddenArgNumBytes)
@@ -823,7 +822,7 @@ void MetadataStreamerV3::emitHiddenKernelArgs(const MachineFunction &MF,
     if (M->getNamedMetadata("llvm.printf.fmts"))
       emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_printf_buffer", Offset,
                     Args);
-    else if (MFI.hasHostcallPtr()) {
+    else if (!Func.hasFnAttribute("amdgpu-no-hostcall-ptr")) {
       // The printf runtime binding pass should have ensured that hostcall and
       // printf are not used in the same module.
       assert(!M->getNamedMetadata("llvm.printf.fmts"));
@@ -1019,7 +1018,7 @@ void MetadataStreamerV5::emitHiddenKernelArgs(const MachineFunction &MF,
   } else
     Offset += 8; // Skipped.
 
-  if (MFI.hasHostcallPtr()) {
+  if (!Func.hasFnAttribute("amdgpu-no-hostcall-ptr")) {
     emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_hostcall_buffer", Offset,
                   Args);
   } else
@@ -1028,7 +1027,7 @@ void MetadataStreamerV5::emitHiddenKernelArgs(const MachineFunction &MF,
   emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_multigrid_sync_arg", Offset,
                 Args);
 
-  if (MFI.hasHeapPtr())
+  if (!Func.hasFnAttribute("amdgpu-no-heap-ptr"))
     emitKernelArg(DL, Int8PtrTy, Align(8), "hidden_heap_v1", Offset, Args);
   else
     Offset += 8; // Skipped.

llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.cpp

@@ -47,8 +47,6 @@ SIMachineFunctionInfo::SIMachineFunctionInfo(const MachineFunction &MF)
     WorkItemIDZ(false),
     ImplicitBufferPtr(false),
     ImplicitArgPtr(false),
-    HostcallPtr(false),
-    HeapPtr(false),
     GITPtrHigh(0xffffffff),
     HighBitsOf32BitAddress(0),
     GDSSize(0) {
@@ -143,12 +141,6 @@ SIMachineFunctionInfo::SIMachineFunctionInfo(const MachineFunction &MF)
 
     if (!F.hasFnAttribute("amdgpu-no-dispatch-id"))
       DispatchID = true;
-
-    if (!F.hasFnAttribute("amdgpu-no-hostcall-ptr"))
-      HostcallPtr = true;
-
-    if (!F.hasFnAttribute("amdgpu-no-heap-ptr"))
-      HeapPtr = true;
   }
 
   // FIXME: This attribute is a hack, we just need an analysis on the function

llvm/lib/Target/AMDGPU/SIMachineFunctionInfo.h

@@ -421,8 +421,6 @@ class SIMachineFunctionInfo final : public AMDGPUMachineFunction {
   // Pointer to where the ABI inserts special kernel arguments separate from the
   // user arguments. This is an offset from the KernargSegmentPtr.
   bool ImplicitArgPtr : 1;
-  bool HostcallPtr : 1;
-  bool HeapPtr : 1;
 
   bool MayNeedAGPRs : 1;
 
@@ -698,14 +696,6 @@ class SIMachineFunctionInfo final : public AMDGPUMachineFunction {
     return ImplicitArgPtr;
   }
 
-  bool hasHostcallPtr() const {
-    return HostcallPtr;
-  }
-
-  bool hasHeapPtr () const {
-    return HeapPtr;
-  }
-
   bool hasImplicitBufferPtr() const {
     return ImplicitBufferPtr;
   }