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Adds IR::ADD to constprop pass.

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Ryan Houdek 2019-10-16 17:22:17 -07:00 committed by Stefanos Kornilios Mitsis Poiitidis
parent 218f38ff3d
commit a8bb815a76
1 changed files with 16 additions and 0 deletions
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16
Source/Interface/IR/Passes/ConstProp.cpp
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@ -37,6 +37,22 @@ bool ConstProp::Run(OpDispatchBuilder *Disp) {
OrderedNode *CodeNode = CodeOp->GetNode(ListBegin); OrderedNode *CodeNode = CodeOp->GetNode(ListBegin);
auto IROp = CodeNode->Op(DataBegin); auto IROp = CodeNode->Op(DataBegin);
switch (IROp->Op) { switch (IROp->Op) {
case OP_ADD: {
auto Op = IROp->C<IR::IROp_Add>();
uint64_t Constant1;
uint64_t Constant2;
if (Disp->IsValueConstant(Op->Header.Args[0], &Constant1) &&
Disp->IsValueConstant(Op->Header.Args[1], &Constant2)) {
uint64_t NewConstant = Constant1 + Constant2;
Disp->SetWriteCursor(CodeNode);
auto ConstantVal = Disp->_Constant(NewConstant);
Disp->ReplaceAllUsesWithInclusive(CodeNode, ConstantVal, CodeBegin, CodeLast);
Changed = true;
}
break;
}
case OP_ZEXT: { case OP_ZEXT: {
auto Op = IROp->C<IR::IROp_Zext>(); auto Op = IROp->C<IR::IROp_Zext>();
uint64_t Constant; uint64_t Constant;