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Allow TargetLowering::getRegClassFor() to be called on illegal types. Also

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allow target to override it in order to map register classes to illegal
but synthesizable types. e.g. v4i64, v8i64 for ARM / NEON.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103854 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2010-05-15 02:18:07 +00:00
parent 7092c2bfcb
commit 06b666c705
4 changed files with 29 additions and 9 deletions
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4
include/llvm/Target/TargetLowering.h
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@ -155,8 +155,8 @@ public:
}
/// getRegClassFor - Return the register class that should be used for the
/// specified value type. This may only be called on legal types.
TargetRegisterClass *getRegClassFor(EVT VT) const {
/// specified value type.
virtual TargetRegisterClass *getRegClassFor(EVT VT) const {
assert(VT.isSimple() && "getRegClassFor called on illegal type!");
TargetRegisterClass *RC = RegClassForVT[VT.getSimpleVT().SimpleTy];
assert(RC && "This value type is not natively supported!");