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author | Chris Lattner <sabre@nondot.org> | 2001-07-08 21:10:27 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2001-07-08 21:10:27 +0000 |
commit | 027dcc5b2249bc260f8bbf3fe5f6ce774054e671 (patch) | |
tree | 14f209003a2776cd602dbbb9eeeee56ab29b642c /lib/VMCore | |
parent | 71496b3b50cfcba84eb4acd988ce88a4463e4515 (diff) | |
download | llvm-027dcc5b2249bc260f8bbf3fe5f6ce774054e671.tar.gz llvm-027dcc5b2249bc260f8bbf3fe5f6ce774054e671.tar.bz2 llvm-027dcc5b2249bc260f8bbf3fe5f6ce774054e671.tar.xz |
Implemented shl, shl, & load instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/VMCore')
-rw-r--r-- | lib/VMCore/iMemory.cpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/lib/VMCore/iMemory.cpp b/lib/VMCore/iMemory.cpp new file mode 100644 index 0000000000..41c14b04d5 --- /dev/null +++ b/lib/VMCore/iMemory.cpp @@ -0,0 +1,47 @@ +//===-- iMemory.cpp - Implement Memory instructions --------------*- C++ -*--=// +// +// This file implements the various memory related classes defined in iMemory.h +// +//===----------------------------------------------------------------------===// + +#include "llvm/iMemory.h" +#include "llvm/ConstPoolVals.h" + +const Type *LoadInst::getIndexedType(const Type *Ptr, + const vector<ConstPoolVal*> &Idx) { + if (!Ptr->isPointerType()) return 0; // Type isn't a pointer type! + + // Get the type pointed to... + Ptr = ((const PointerType*)Ptr)->getValueType(); + + if (Ptr->isStructType()) { + unsigned CurIDX = 0; + while (Ptr->isStructType()) { + if (Idx.size() == CurIDX) return 0; // Can't load a whole structure! + if (Idx[CurIDX]->getType() != Type::UByteTy) return 0; // Illegal idx + unsigned NextIdx = ((ConstPoolUInt*)Idx[CurIDX++])->getValue(); + + const StructType *ST = (const StructType *)Ptr; + Ptr = ST->getElementTypes()[NextIdx]; + } + return Ptr; + } else if (Ptr->isArrayType()) { + assert(0 && "Loading from arrays not implemented yet!"); + } else { + return (Idx.size() == 0) ? Ptr : 0; // Load directly through ptr + } +} + + +LoadInst::LoadInst(Value *Ptr, const vector<ConstPoolVal*> &Idx, + const string &Name = "") + : Instruction(getIndexedType(Ptr->getType(), Idx), Load, Name) { + assert(getIndexedType(Ptr->getType(), Idx) && "Load operands invalid!"); + assert(Ptr->getType()->isPointerType() && "Can't free nonpointer!"); + Operands.reserve(1+Idx.size()); + Operands.push_back(Use(Ptr, this)); + + for (unsigned i = 0, E = Idx.size(); i != E; ++i) + Operands.push_back(Use(Idx[i], this)); +} + |