diff options
| author | Dan Gohman <gohman@apple.com> | 2009-01-27 20:39:34 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-01-27 20:39:34 +0000 |
| commit | ce9bc12c6f3c3544f7518c0c60203f2f9dff342f (patch) | |
| tree | a60dd3cbe68329a1fa1e55da165597ddfeecc67c /lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | |
| parent | d3f184906d341924fbebe9b09e225c624b4e0474 (diff) | |
Add an assertion to the form of SelectionDAG::getConstant that takes
a uint64_t to verify that the value is in range for the given type,
to help catch accidental overflow. Fix a few places that relied on
getConstant implicitly truncating the value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63128 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeDAG.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 723c512c92..58ac8c285c 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -6293,7 +6293,7 @@ SDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op) { unsigned len = VT.getSizeInBits(); for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) - SDValue Tmp2 = DAG.getConstant(mask[i], VT); + SDValue Tmp2 = DAG.getConstant(VT.getIntegerVTBitMask() & mask[i], VT); SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); Op = DAG.getNode(ISD::ADD, VT, DAG.getNode(ISD::AND, VT, Op, Tmp2), DAG.getNode(ISD::AND, VT, |