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Fill in type legalization for MERGE_VALUES in all the various cases. Patch by Micah Villmow. (No testcase because the issue only showed up in an out-of-tree backend.)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138877 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman
2011-08-31 18:36:04 +00:00
parent d82175c1f0
commit 62bb16cfd1
6 changed files with 77 additions and 18 deletions
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19
lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
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@@ -946,6 +946,25 @@ bool DAGTypeLegalizer::CustomWidenLowerNode(SDNode *N, EVT VT) {
return true;
}
SDValue DAGTypeLegalizer::DecomposeMERGE_VALUES(SDNode *N) {
unsigned i;
// A MERGE_VALUES node can produce any number of values.
// We know that the first illegal type needs to be handled.
for (i = 0; isTypeLegal(N->getValueType(i)); ++i)
ReplaceValueWith(SDValue(N, i), SDValue(N->getOperand(i)));
// The first illegal result must be the one that needs to be handled.
SDValue BadValue = N->getOperand(i);
// Legalize the rest of the results into the input operands whether they
// are legal or not.
unsigned e = N->getNumValues();
for (++i; i != e; ++i)
ReplaceValueWith(SDValue(N, i), SDValue(N->getOperand(i)));
return BadValue;
}
/// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type
/// which is split into two not necessarily identical pieces.
void DAGTypeLegalizer::GetSplitDestVTs(EVT InVT, EVT &LoVT, EVT &HiVT) {