1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/SPIRV/SPIRVUtils.cpp b/llvm/lib/Target/SPIRV/SPIRVUtils.cpp
index 327c011..1d47c89 100644
--- a/llvm/lib/Target/SPIRV/SPIRVUtils.cpp
+++ b/llvm/lib/Target/SPIRV/SPIRVUtils.cpp
@@ -385,6 +385,12 @@ uint64_t getIConstVal(Register ConstReg, const MachineRegisterInfo *MRI) {
   return MI->getOperand(1).getCImm()->getValue().getZExtValue();
 }
 
+int64_t getIConstValSext(Register ConstReg, const MachineRegisterInfo *MRI) {
+  const MachineInstr *MI = getDefInstrMaybeConstant(ConstReg, MRI);
+  assert(MI && MI->getOpcode() == TargetOpcode::G_CONSTANT);
+  return MI->getOperand(1).getCImm()->getSExtValue();
+}
+
 bool isSpvIntrinsic(const MachineInstr &MI, Intrinsic::ID IntrinsicID) {
   if (const auto *GI = dyn_cast<GIntrinsic>(&MI))
     return GI->is(IntrinsicID);