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

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

diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h
index b872f3d986c53b26d164401eb56a0cbf774f9ccc..47541bec4690370a613f9325cfe5445100cbc365 100644 (file)
--- a/include/llvm/Target/TargetLowering.h
+++ b/include/llvm/Target/TargetLowering.h
@@ -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