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Eliminate the restriction that the array size in an alloca must be i32.

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This will help reduce the amount of casting required on 64-bit targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104911 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-05-28 01:14:11 +00:00
parent 5ddb087f7f
commit f75a7d3fbf
7 changed files with 34 additions and 17 deletions
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11
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -2643,12 +2643,13 @@ void SelectionDAGBuilder::visitAlloca(const AllocaInst &I) {
SDValue AllocSize = getValue(I.getArraySize());
AllocSize = DAG.getNode(ISD::MUL, getCurDebugLoc(), AllocSize.getValueType(),
AllocSize,
DAG.getConstant(TySize, AllocSize.getValueType()));
EVT IntPtr = TLI.getPointerTy();
AllocSize = DAG.getZExtOrTrunc(AllocSize, getCurDebugLoc(), IntPtr);
if (AllocSize.getValueType() != IntPtr)
AllocSize = DAG.getZExtOrTrunc(AllocSize, getCurDebugLoc(), IntPtr);
AllocSize = DAG.getNode(ISD::MUL, getCurDebugLoc(), IntPtr,
AllocSize,
DAG.getConstant(TySize, IntPtr));
// Handle alignment. If the requested alignment is less than or equal to
// the stack alignment, ignore it. If the size is greater than or equal to