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Make sure both operands have binary instructions have the same type. 

llvm-svn: 69844
This commit is contained in:
Evan Cheng 2009-04-22 23:39:28 +00:00
parent 85e110828e
commit d8174d3d09
2 changed files with 42 additions and 12 deletions
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34
llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
View File

@ -751,11 +751,14 @@ bool IndVarSimplify::runOnLoop(Loop *L, LPPassManager &LPM) {
// We've determined this is (i+constant) and it won't overflow.
if (isa<SExtInst>(UInst->use_begin())) {
SExtInst* oldSext = dyn_cast<SExtInst>(UInst->use_begin());
uint64_t truncSize = oldSext->getType()->getPrimitiveSizeInBits();
Value *TruncIndVar = getSignExtendedTruncVar(AR, SE, LargestType,
L, oldSext->getType(), Rewriter,
InsertPt);
APInt APcopy = APInt(AddRHS->getValue());
ConstantInt* newAddRHS =ConstantInt::get(APcopy.sext(newBitSize));
APInt APnewAddRHS = APInt(AddRHS->getValue()).sext(newBitSize);
if (newBitSize > truncSize)
APnewAddRHS = APnewAddRHS.trunc(truncSize);
ConstantInt* newAddRHS =ConstantInt::get(APnewAddRHS);
Value *NewAdd =
BinaryOperator::CreateAdd(TruncIndVar, newAddRHS,
UInst->getName()+".nosex", UInst);
@ -779,18 +782,21 @@ bool IndVarSimplify::runOnLoop(Loop *L, LPPassManager &LPM) {
if (!RHS->getValue().isNegative()) {
uint64_t newBitSize = LargestType->getPrimitiveSizeInBits();
SExtInst* oldSext = dyn_cast<SExtInst>(UInst->use_begin());
uint64_t truncSize = oldSext->getType()->getPrimitiveSizeInBits();
Value *TruncIndVar = getSignExtendedTruncVar(AR, SE, LargestType,
L, oldSext->getType(), Rewriter,
InsertPt);
APInt APcopy = APInt(RHS->getValue());
ConstantInt* newRHS =ConstantInt::get(APcopy.sext(newBitSize));
Value *NewAdd =
BinaryOperator::CreateOr(TruncIndVar, newRHS,
APInt APnewOrRHS = APInt(RHS->getValue()).sext(newBitSize);
if (newBitSize > truncSize)
APnewOrRHS = APnewOrRHS.trunc(truncSize);
ConstantInt* newOrRHS =ConstantInt::get(APnewOrRHS);
Value *NewOr =
BinaryOperator::CreateOr(TruncIndVar, newOrRHS,
UInst->getName()+".nosex", UInst);
for (Value::use_iterator UI2 = UInst->use_begin(),
UE2 = UInst->use_end(); UI2 != UE2; ++UI2) {
Instruction *II = dyn_cast<Instruction>(UI2);
II->replaceAllUsesWith(NewAdd);
II->replaceAllUsesWith(NewOr);
DeadInsts.insert(II);
}
DeadInsts.insert(UInst);
@ -814,10 +820,13 @@ bool IndVarSimplify::runOnLoop(Loop *L, LPPassManager &LPM) {
uint64_t newBitSize = LargestType->getPrimitiveSizeInBits();
ConstantInt* AndRHS = dyn_cast<ConstantInt>(UInst->getOperand(1));
ZExtInst* oldZext = dyn_cast<ZExtInst>(UInst->use_begin());
uint64_t truncSize = oldZext->getType()->getPrimitiveSizeInBits();
Value *TruncIndVar = getSignExtendedTruncVar(AR, SE, LargestType,
L, oldZext->getType(), Rewriter, InsertPt);
APInt APcopy = APInt(AndRHS->getValue());
ConstantInt* newAndRHS = ConstantInt::get(APcopy.zext(newBitSize));
APInt APnewAndRHS = APInt(AndRHS->getValue()).zext(newBitSize);
if (newBitSize > truncSize)
APnewAndRHS = APnewAndRHS.trunc(truncSize);
ConstantInt* newAndRHS = ConstantInt::get(APnewAndRHS);
Value *NewAnd =
BinaryOperator::CreateAnd(TruncIndVar, newAndRHS,
UInst->getName()+".nozex", UInst);
@ -847,11 +856,14 @@ bool IndVarSimplify::runOnLoop(Loop *L, LPPassManager &LPM) {
allUsesAreSameTyped(Instruction::ZExt, UInst2) &&
isa<ConstantInt>(UInst2->getOperand(1))) {
ZExtInst* oldZext = dyn_cast<ZExtInst>(UInst2->use_begin());
uint64_t truncSize = oldZext->getType()->getPrimitiveSizeInBits();
Value *TruncIndVar = getSignExtendedTruncVar(AR, SE, LargestType,
L, oldZext->getType(), Rewriter, InsertPt);
ConstantInt* AndRHS = dyn_cast<ConstantInt>(UInst2->getOperand(1));
APInt APcopy = APInt(AddRHS->getValue());
ConstantInt* newAddRHS = ConstantInt::get(APcopy.zext(newBitSize));
APInt APnewAddRHS = APInt(AddRHS->getValue()).zext(newBitSize);
if (newBitSize > truncSize)
APnewAddRHS = APnewAddRHS.trunc(truncSize);
ConstantInt* newAddRHS = ConstantInt::get(APnewAddRHS);
Value *NewAdd = ((UInst->getOpcode()==Instruction::Add) ?
BinaryOperator::CreateAdd(TruncIndVar, newAddRHS,
UInst->getName()+".nozex", UInst2) :

20
llvm/test/Transforms/IndVarSimplify/2009-04-22-IndvarCrash.ll
View File

@ -1,6 +1,7 @@
; RUN: llvm-as < %s | opt -indvars
; rdar://6817574
define i32 @t() nounwind ssp {
define i32 @t1() nounwind ssp {
entry:
br label %bb32
@ -15,3 +16,20 @@ bb32: ; preds = %bb32, %entry
bb41: ; preds = %bb32
ret i32 0
}
define i32 @t2() nounwind ssp {
entry:
br label %bb116
bb116: ; preds = %bb116, %entry
%mbPartIdx.1.reg2mem.0 = phi i8 [ %3, %bb116 ], [ 0, %entry ] ; <i8> [#uses=3]
%0 = and i8 %mbPartIdx.1.reg2mem.0, 1 ; <i8> [#uses=1]
%1 = zext i8 %mbPartIdx.1.reg2mem.0 to i64 ; <i64> [#uses=0]
%2 = zext i8 %0 to i32 ; <i32> [#uses=0]
%3 = add i8 %mbPartIdx.1.reg2mem.0, 1 ; <i8> [#uses=2]
%4 = icmp ugt i8 %3, 3 ; <i1> [#uses=1]
br i1 %4, label %bb131, label %bb116
bb131: ; preds = %bb116
unreachable
}