update clip to support fp64.

Reviewed By: jfix71, kunmingho

Differential Revision: D50943320

fbshipit-source-id: 8fdefafc2896d9b1d0010c6d613f53cf12f16c6c

Author: Jay Banerjee

include/glow/LLVMIRCodeGen/LLVMIRGen.h

@@ -216,6 +216,8 @@ class LLVMIRGen {
                                      const glow::Value *val);
   /// Generates LLVM IR that materializes the constant \p val.
   llvm::Value *emitConstF32(llvm::IRBuilder<> &builder, float val);
+  /// Generates LLVM IR that materializes the constant double \p val.
+  llvm::Value *emitConstF64(llvm::IRBuilder<> &builder, double val);
   /// Generates LLVM IR that materializes the constant int64 \p val.
   llvm::Value *emitConstI64(llvm::IRBuilder<> &builder, int64_t val);
   /// Generates LLVM IR that materializes the constant \p val.

lib/LLVMIRCodeGen/LLVMIRGen.cpp

@@ -455,6 +455,9 @@ llvm::Type *LLVMIRGen::getLLVMPtrType(glow::ElemKind kind) {
   case ElemKind::BoolTy:
     T = llvm::Type::getInt8PtrTy(getLLVMContext());
     break;
+  case ElemKind::Float64Ty:
+    T = llvm::Type::getDoubleTy(getLLVMContext());
+    break;
   default:
     LOG(FATAL) << "Unsupported element type: "
                << Type::getElementName(kind).str();
@@ -667,6 +670,10 @@ llvm::Value *LLVMIRGen::emitConstF32(llvm::IRBuilder<> &builder, float val) {
   return llvm::ConstantFP::get(llvm::Type::getFloatTy(getLLVMContext()), val);
 }
 
+llvm::Value *LLVMIRGen::emitConstF64(llvm::IRBuilder<> &builder, double val) {
+  return llvm::ConstantFP::get(llvm::Type::getDoubleTy(getLLVMContext()), val);
+}
+
 llvm::Value *LLVMIRGen::emitConstI64(llvm::IRBuilder<> &builder, int64_t val) {
   return builder.getInt64(val);
 }