[llvm] f08b171 - [TableGen] Use MachineValueTypeSet in place of SmallSet.

[Craig Topper via llvm-commits]

Author: Craig Topper
Date: 2021-04-18T13:38:30-07:00
New Revision: f08b171b18744a2e75f13e7d4860a51eebd4d5e8

URL: https://github.com/llvm/llvm-project/commit/f08b171b18744a2e75f13e7d4860a51eebd4d5e8
DIFF: https://github.com/llvm/llvm-project/commit/f08b171b18744a2e75f13e7d4860a51eebd4d5e8.diff

LOG: [TableGen] Use MachineValueTypeSet in place of SmallSet.

MachineValueTypeSet is effectively a std::bitset<256>. This allows
us quickly insert into the set and check if a type is in the set.

Added: 
    

Modified: 
    llvm/utils/TableGen/CodeGenDAGPatterns.cpp

Removed: 
    


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diff  --git a/llvm/utils/TableGen/CodeGenDAGPatterns.cpp b/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
index 72fe9faf81f8..47e1085b9142 100644
--- a/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -581,7 +581,7 @@ bool TypeInfer::EnforceVectorEltTypeIs(TypeSetByHwMode &Vec,
     Changed |= berase_if(E, isVector);  // Vector = !scalar
     assert(!V.empty() && !E.empty());
 
-    SmallSet<MVT,4> VT, ST;
+    MachineValueTypeSet VT, ST;
     // Collect element types from the "vector" set.
     for (MVT T : V)
       VT.insert(T.getVectorElementType());