Changes in directory llvm/lib/VMCore:
ConstantFolding.cpp updated: 1.77 -> 1.78
---
Log message:
implement constant folding for the element-wise binary operations
---
Diffs of the changes: (+50 -0)
ConstantFolding.cpp | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 50 insertions(+)
Index: llvm/lib/VMCore/ConstantFolding.cpp
diff -u llvm/lib/VMCore/ConstantFolding.cpp:1.77
llvm/lib/VMCore/ConstantFolding.cpp:1.78
--- llvm/lib/VMCore/ConstantFolding.cpp:1.77 Tue Jan 3 20:03:29 2006
+++ llvm/lib/VMCore/ConstantFolding.cpp Tue Jan 3 20:15:02 2006
@@ -332,11 +332,61 @@
// ConstantPackedRules Class
//===----------------------------------------------------------------------===//
+/// DoVectorOp - Given two packed constants and a function pointer, apply the
+/// function pointer to each element pair, producing a new ConstantPacked
+/// constant.
+static Constant *EvalVectorOp(const ConstantPacked *V1,
+ const ConstantPacked *V2,
+ Constant *(*FP)(Constant*, Constant*)) {
+ std::vector<Constant*> Res;
+ for (unsigned i = 0, e = V1->getNumOperands(); i != e; ++i)
+ Res.push_back(FP(const_cast<Constant*>(V1->getOperand(i)),
+ const_cast<Constant*>(V2->getOperand(i))));
+ return ConstantPacked::get(Res);
+}
+
/// PackedTypeRules provides a concrete base class of ConstRules for
/// ConstantPacked operands.
///
struct ConstantPackedRules
: public TemplateRules<ConstantPacked, ConstantPackedRules> {
+
+ static Constant *Add(const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getAdd);
+ }
+ static Constant *Sub(const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getSub);
+ }
+ static Constant *Mul(const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getMul);
+ }
+ static Constant *Div(const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getDiv);
+ }
+ static Constant *Rem(const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getRem);
+ }
+ static Constant *And(const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getAnd);
+ }
+ static Constant *Or (const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getOr);
+ }
+ static Constant *Xor(const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getXor);
+ }
+ static Constant *Shl(const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getShl);
+ }
+ static Constant *Shr(const ConstantPacked *V1, const ConstantPacked *V2) {
+ return EvalVectorOp(V1, V2, ConstantExpr::getShr);
+ }
+ static Constant *LessThan(const ConstantPacked *V1, const ConstantPacked
*V2){
+ return 0;
+ }
+ static Constant *EqualTo(const ConstantPacked *V1, const ConstantPacked *V2)
{
+ return 0;
+ }
};
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