[nfc][llvm] Replace pointer cast functions in PointerUnion by llvm casting functions.

This patch replaces the uses of PointerUnion.is function by llvm::isa,
PointerUnion.get function by llvm::cast, and PointerUnion.dyn_cast by
llvm::dyn_cast_if_present. This is according to the FIXME in
the definition of the class PointerUnion.

This patch does not remove them as they are being used in other
subprojects.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D148449

1 files changed, 5 insertions, 5 deletions

diff --git a/llvm/lib/CodeGen/MachineRegisterInfo.cpp b/llvm/lib/CodeGen/MachineRegisterInfo.cpp
index 1ad08e1..377321a 100644
--- a/llvm/lib/CodeGen/MachineRegisterInfo.cpp
+++ b/llvm/lib/CodeGen/MachineRegisterInfo.cpp
@@ -101,13 +101,13 @@ MachineRegisterInfo::constrainRegAttrs(Register Reg,
     const auto RegCB = getRegClassOrRegBank(Reg);
     if (RegCB.isNull())
       setRegClassOrRegBank(Reg, ConstrainingRegCB);
-    else if (RegCB.is<const TargetRegisterClass *>() !=
-             ConstrainingRegCB.is<const TargetRegisterClass *>())
+    else if (isa<const TargetRegisterClass *>(RegCB) !=
+             isa<const TargetRegisterClass *>(ConstrainingRegCB))
       return false;
-    else if (RegCB.is<const TargetRegisterClass *>()) {
+    else if (isa<const TargetRegisterClass *>(RegCB)) {
       if (!::constrainRegClass(
-              *this, Reg, RegCB.get<const TargetRegisterClass *>(),
-              ConstrainingRegCB.get<const TargetRegisterClass *>(), MinNumRegs))
+              *this, Reg, cast<const TargetRegisterClass *>(RegCB),
+              cast<const TargetRegisterClass *>(ConstrainingRegCB), MinNumRegs))
         return false;
     } else if (RegCB != ConstrainingRegCB)
       return false;