ARM32 vector division lowering.

src/IceTargetLowering.cpp

 //===- subzero/src/IceTargetLowering.cpp - Basic lowering implementation --===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 682 matching lines @@
   InstCall *Call =
       InstCall::create(Func, MaxSrcs, Dest, CallTarget, HasTailCall);
   return Call;
 }
 
 bool TargetLowering::shouldOptimizeMemIntrins() {
   return Ctx->getFlags().getOptLevel() >= Opt_1 ||
          Ctx->getFlags().getForceMemIntrinOpt();
 }
 
+void TargetLowering::scalarizeArithmetic(InstArithmetic::OpKind Kind,
+                                         Variable *Dest, Operand *Src0,
+                                         Operand *Src1) {
+  assert(isVectorType(Dest->getType()));
+  Type Ty = Dest->getType();
+  Type ElementTy = typeElementType(Ty);
+  SizeT NumElements = typeNumElements(Ty);
+
+  Operand *T = Ctx->getConstantUndef(Ty);
+  for (SizeT I = 0; I < NumElements; ++I) {
+    Constant *Index = Ctx->getConstantInt32(I);
+
+    // Extract the next two inputs.
+    Variable *Op0 = Func->makeVariable(ElementTy);
+    Context.insert<InstExtractElement>(Op0, Src0, Index);
+    Variable *Op1 = Func->makeVariable(ElementTy);
+    Context.insert<InstExtractElement>(Op1, Src1, Index);
+
+    // Perform the arithmetic as a scalar operation.
+    Variable *Res = Func->makeVariable(ElementTy);
+    auto *Arith = Context.insert<InstArithmetic>(Kind, Res, Op0, Op1);
+    // We might have created an operation that needed a helper call.
+    genTargetHelperCallFor(Arith);
+
+    // Insert the result into position.
+    Variable *DestT = Func->makeVariable(Ty);
+    Context.insert<InstInsertElement>(DestT, T, Res, Index);
+    T = DestT;
+  }
+
+  Context.insert<InstAssign>(Dest, T);
+}
+
 void TargetLowering::emitWithoutPrefix(const ConstantRelocatable *C,
                                        const char *Suffix) const {
   if (!BuildDefs::dump())
     return;
   Ostream &Str = Ctx->getStrEmit();
   const IceString &EmitStr = C->getEmitString();
   if (!EmitStr.empty()) {
     // C has a custom emit string, so we use it instead of the canonical
     // Name + Offset form.
     Str << EmitStr;
@@ skipping 150 matching lines @@
   case Target_##X:                                                             \
     return ::X::createTargetHeaderLowering(Ctx);
 #include "llvm/Config/SZTargets.def"
 #undef SUBZERO_TARGET
   }
 }
 
 TargetHeaderLowering::~TargetHeaderLowering() = default;
 
 } // end of namespace Ice