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In the perhaps not-to-distant future, we might support gep instructions that

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have non-long indices for sequential types.  In order to avoid trying to figure
out how the v9 backend works, we'll just hack it in the preselection pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12647 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-04-04 20:44:05 +00:00
parent 702a8a070f
commit 97220b7338
1 changed files with 20 additions and 5 deletions
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25
lib/Target/SparcV9/SparcV9PreSelection.cpp
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@ -24,12 +24,12 @@
#include "llvm/Module.h"
#include "llvm/Pass.h"
#include "llvm/Support/InstVisitor.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/Scalar.h"
#include <algorithm>
namespace llvm {
using namespace llvm;
namespace {
@ -228,6 +228,23 @@ inline void PreSelection::visitInstruction(Instruction &I) {
void PreSelection::visitGetElementPtrInst(GetElementPtrInst &I) {
Instruction* curI = &I;
// The Sparc backend doesn't handle array indexes that are not long types, so
// insert a cast from whatever it is to long, if the sequential type index is
// not a long already.
unsigned Idx = 1;
for (gep_type_iterator TI = gep_type_begin(I), E = gep_type_end(I); TI != E;
++TI, ++Idx)
if (isa<SequentialType>(*TI) &&
I.getOperand(Idx)->getType() != Type::LongTy) {
Value *Op = I.getOperand(Idx);
if (Op->getType()->isUnsigned()) // Must sign extend!
Op = new CastInst(Op, Op->getType()->getSignedVersion(), "v9", &I);
if (Op->getType() != Type::LongTy)
Op = new CastInst(Op, Type::LongTy, "v9", &I);
I.setOperand(Idx, Op);
}
// Decompose multidimensional array references
if (I.getNumIndices() >= 2) {
// DecomposeArrayRef() replaces I and deletes it, if successful,
@ -251,8 +268,6 @@ void PreSelection::visitCallInst(CallInst &I) {
/// createPreSelectionPass - Public entry point for the PreSelection pass
///
FunctionPass* createPreSelectionPass(const TargetMachine &TM) {
FunctionPass* llvm::createPreSelectionPass(const TargetMachine &TM) {
return new PreSelection(TM);
}
} // End llvm namespace