remove more unused utils

Author: tgymnich

llvm/include/llvm/CodeGen/GlobalISel/Utils.h

@@ -183,10 +183,6 @@ std::optional<APInt> getIConstantVRegVal(Register VReg,
 std::optional<int64_t> getIConstantVRegSExtVal(Register VReg,
                                                const MachineRegisterInfo &MRI);
 
-/// If \p VReg is defined by a G_CONSTANT fits in uint64_t returns it.
-std::optional<uint64_t> getIConstantVRegZExtVal(Register VReg,
-                                                const MachineRegisterInfo &MRI);
-
 /// \p VReg is defined by a G_CONSTANT, return the corresponding value.
 const APInt &getIConstantFromReg(Register VReg, const MachineRegisterInfo &MRI);
 
@@ -442,17 +438,6 @@ std::optional<int64_t> getIConstantSplatSExtVal(const Register Reg,
 std::optional<int64_t> getIConstantSplatSExtVal(const MachineInstr &MI,
                                                 const MachineRegisterInfo &MRI);
 
-/// \returns the scalar sign extended integral splat value of \p Reg if
-/// possible.
-std::optional<uint64_t>
-getIConstantSplatZExtVal(const Register Reg, const MachineRegisterInfo &MRI);
-
-/// \returns the scalar sign extended integral splat value defined by \p MI if
-/// possible.
-std::optional<uint64_t>
-getIConstantSplatZExtVal(const MachineInstr &MI,
-                         const MachineRegisterInfo &MRI);
-
 /// Returns a floating point scalar constant of a build vector splat if it
 /// exists. When \p AllowUndef == true some elements can be undef but not all.
 std::optional<FPValueAndVReg> getFConstantSplat(Register VReg,

llvm/lib/CodeGen/GlobalISel/Utils.cpp

@@ -318,14 +318,6 @@ llvm::getIConstantVRegSExtVal(Register VReg, const MachineRegisterInfo &MRI) {
   return std::nullopt;
 }
 
-std::optional<uint64_t>
-llvm::getIConstantVRegZExtVal(Register VReg, const MachineRegisterInfo &MRI) {
-  std::optional<APInt> Val = getIConstantVRegVal(VReg, MRI);
-  if (Val && Val->getBitWidth() <= 64)
-    return Val->getZExtValue();
-  return std::nullopt;
-}
-
 namespace {
 
 // This function is used in many places, and as such, it has some
@@ -1438,21 +1430,6 @@ llvm::getIConstantSplatSExtVal(const MachineInstr &MI,
   return getIConstantSplatSExtVal(MI.getOperand(0).getReg(), MRI);
 }
 
-std::optional<uint64_t>
-llvm::getIConstantSplatZExtVal(const Register Reg,
-                               const MachineRegisterInfo &MRI) {
-  if (auto SplatValAndReg =
-          getAnyConstantSplat(Reg, MRI, /* AllowUndef */ false))
-    return getIConstantVRegSExtVal(SplatValAndReg->VReg, MRI);
-  return std::nullopt;
-}
-
-std::optional<uint64_t>
-llvm::getIConstantSplatZExtVal(const MachineInstr &MI,
-                               const MachineRegisterInfo &MRI) {
-  return getIConstantSplatZExtVal(MI.getOperand(0).getReg(), MRI);
-}
-
 std::optional<FPValueAndVReg>
 llvm::getFConstantSplat(Register VReg, const MachineRegisterInfo &MRI,
                         bool AllowUndef) {