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This patch corrects commit 165126 by using an integer bit width instead of

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a pointer to a type, in order to remove the uses of getGlobalContext().

Patch by Tyler Nowicki.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165255 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Preston Gurd
2012-10-04 21:33:40 +00:00
parent 837c28a840
commit 8d662b59f0
5 changed files with 23 additions and 23 deletions
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lib/Transforms/Utils/BypassSlowDivision.cpp
+8 -9
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@@ -221,7 +221,7 @@ static bool reuseOrInsertFastDiv(Function &F,
// be profitably bypassed and carried out with a shorter, faster divide.
bool llvm::bypassSlowDivision(Function &F,
Function::iterator &I,
const DenseMap<Type*, Type*> &BypassTypeMap) {
const DenseMap<unsigned int, unsigned int> &BypassWidths) {
DivCacheTy DivCache;
bool MadeChange = false;
@@ -242,18 +242,17 @@ bool llvm::bypassSlowDivision(Function &F,
if (!J->getType()->isIntegerTy())
continue;
// Get same type in global context
// Get bitwidth of div/rem instruction
IntegerType *T = cast<IntegerType>(J->getType());
IntegerType *GT = IntegerType::get(getGlobalContext(), T->getBitWidth());
int bitwidth = T->getBitWidth();
// Continue if div/rem type is not bypassed
DenseMap<Type *, Type *>::const_iterator BI = BypassTypeMap.find(GT);
if (BI == BypassTypeMap.end())
// Continue if bitwidth is not bypassed
DenseMap<unsigned int, unsigned int>::const_iterator BI = BypassWidths.find(bitwidth);
if (BI == BypassWidths.end())
continue;
// Get the bypass type in the original context
IntegerType *GBT = cast<IntegerType>(BI->second);
IntegerType *BT = IntegerType::get(J->getContext(), GBT->getBitWidth());
// Get type for div/rem instruction with bypass bitwidth
IntegerType *BT = IntegerType::get(J->getContext(), BI->second);
MadeChange |= reuseOrInsertFastDiv(F, I, J, BT, UseDivOp,
UseSignedOp, DivCache);