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| author | Chris Lattner <sabre@nondot.org> | 2011-02-13 09:10:56 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2011-02-13 09:10:56 +0000 |
| commit | 915eeb488786379250808d47668c43e010efe566 (patch) | |
| tree | 7ca78048960929fd07ee81a7f764785aeaabf334 /lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | |
| parent | d3027738856d57ee22930deca0c7977fdc13e633 (diff) | |
| download | external_llvm-915eeb488786379250808d47668c43e010efe566.zip external_llvm-915eeb488786379250808d47668c43e010efe566.tar.gz external_llvm-915eeb488786379250808d47668c43e010efe566.tar.bz2 | |
when legalizing extremely wide shifts, make sure that
the shift amounts are in a suitably wide type so that
we don't generate out of range constant shift amounts.
This fixes PR9028.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125458 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index d9faea1..696cd24 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -2426,11 +2426,11 @@ void SelectionDAGBuilder::visitShift(const User &I, unsigned Opcode) { SDValue Op2 = getValue(I.getOperand(1)); MVT ShiftTy = TLI.getShiftAmountTy(); - unsigned ShiftSize = ShiftTy.getSizeInBits(); - unsigned Op2Size = Op2.getValueType().getSizeInBits(); // Coerce the shift amount to the right type if we can. if (!I.getType()->isVectorTy() && Op2.getValueType() != ShiftTy) { + unsigned ShiftSize = ShiftTy.getSizeInBits(); + unsigned Op2Size = Op2.getValueType().getSizeInBits(); DebugLoc DL = getCurDebugLoc(); // If the operand is smaller than the shift count type, promote it. |