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[Target] Teach the query interfaces for lowering of extloads and

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truncstores to support EVTs and return expand for non-simple ones.

This makes them more consistent with the isLegal... query style methods
and makes using them simpler in many scenarios.

No functionality actually changed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213860 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2014-07-24 12:20:53 +00:00
parent 2c7c54c86c
commit 6800393083
1 changed files with 11 additions and 7 deletions
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18
include/llvm/Target/TargetLowering.h
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@ -517,10 +517,12 @@ public:
/// Return how this load with extension should be treated: either it is legal,
/// needs to be promoted to a larger size, needs to be expanded to some other
/// code sequence, or the target has a custom expander for it.
LegalizeAction getLoadExtAction(unsigned ExtType, MVT VT) const {
assert(ExtType < ISD::LAST_LOADEXT_TYPE && VT < MVT::LAST_VALUETYPE &&
LegalizeAction getLoadExtAction(unsigned ExtType, EVT VT) const {
if (VT.isExtended()) return Expand;
unsigned I = (unsigned) VT.getSimpleVT().SimpleTy;
assert(ExtType < ISD::LAST_LOADEXT_TYPE && I < MVT::LAST_VALUETYPE &&
"Table isn't big enough!");
return (LegalizeAction)LoadExtActions[VT.SimpleTy][ExtType];
return (LegalizeAction)LoadExtActions[I][ExtType];
}
/// Return true if the specified load with extension is legal on this target.
@ -532,11 +534,13 @@ public:
/// Return how this store with truncation should be treated: either it is
/// legal, needs to be promoted to a larger size, needs to be expanded to some
/// other code sequence, or the target has a custom expander for it.
LegalizeAction getTruncStoreAction(MVT ValVT, MVT MemVT) const {
assert(ValVT < MVT::LAST_VALUETYPE && MemVT < MVT::LAST_VALUETYPE &&
LegalizeAction getTruncStoreAction(EVT ValVT, EVT MemVT) const {
if (ValVT.isExtended() || MemVT.isExtended()) return Expand;
unsigned ValI = (unsigned) ValVT.getSimpleVT().SimpleTy;
unsigned MemI = (unsigned) MemVT.getSimpleVT().SimpleTy;
assert(ValI < MVT::LAST_VALUETYPE && MemI < MVT::LAST_VALUETYPE &&
"Table isn't big enough!");
return (LegalizeAction)TruncStoreActions[ValVT.SimpleTy]
[MemVT.SimpleTy];
return (LegalizeAction)TruncStoreActions[ValI][MemI];
}
/// Return true if the specified store with truncation is legal on this