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This patch prevents an infinite recursion while compiling 103.su2cor. 

All SPEC CFP 95 programs now work, though the JIT isn't loading -lf2c right
so they aren't testing correctly.

llvm-svn: 18499
This commit is contained in:
Chris Lattner 2004-12-04 20:54:32 +00:00
parent 77e8f43c72
commit a27dd47e7a
1 changed files with 3 additions and 3 deletions
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6
llvm/lib/Analysis/ScalarEvolution.cpp
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@ -635,8 +635,7 @@ SCEVHandle SCEVAddExpr::get(std::vector<SCEVHandle> &Ops) {
for (unsigned MulOp = 0, e = Mul->getNumOperands(); MulOp != e; ++MulOp) {
SCEV *MulOpSCEV = Mul->getOperand(MulOp);
for (unsigned AddOp = 0, e = Ops.size(); AddOp != e; ++AddOp)
if (MulOpSCEV == Ops[AddOp] &&
(Mul->getNumOperands() != 2 || !isa<SCEVConstant>(MulOpSCEV))) {
if (MulOpSCEV == Ops[AddOp] && !isa<SCEVConstant>(MulOpSCEV)) {
// Fold W + X + (X * Y * Z) --> W + (X * ((Y*Z)+1))
SCEVHandle InnerMul = Mul->getOperand(MulOp == 0);
if (Mul->getNumOperands() != 2) {
@ -937,7 +936,8 @@ SCEVHandle SCEVMulExpr::get(std::vector<SCEVHandle> &Ops) {
std::vector<SCEV*> SCEVOps(Ops.begin(), Ops.end());
SCEVCommutativeExpr *&Result = SCEVCommExprs[std::make_pair(scMulExpr,
SCEVOps)];
if (Result == 0) Result = new SCEVMulExpr(Ops);
if (Result == 0)
Result = new SCEVMulExpr(Ops);
return Result;
}