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Add support for targets that require promotions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19579 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-01-16 00:37:38 +00:00
parent ff3e50cc39
commit fb849800ea
1 changed files with 6 additions and 1 deletions
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7
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -77,7 +77,12 @@ namespace llvm {
// The common case is that we will only create one register for this
// value. If we have that case, create and return the virtual register.
unsigned NV = TLI.getNumElements(VT);
if (NV == 1) return MakeReg(VT);
if (NV == 1) {
// If we are promoting this value, pick the next largest supported type.
while (!TLI.hasNativeSupportFor(VT))
VT = (MVT::ValueType)(VT+1);
return MakeReg(VT);
}
// If this value is represented with multiple target registers, make sure
// to create enough consequtive registers of the right (smaller) type.