1 files changed, 78 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp b/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
new file mode 100644
index 00000000000..0d30e0781cd
--- /dev/null
+++ b/llvm/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
@@ -0,0 +1,78 @@
+//===- lib/CodeGen/GlobalISel/LegalizerPredicates.cpp - Predicates --------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// A library of predicate factories to use for LegalityPredicate.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/GlobalISel/LegalizerInfo.h"
+
+using namespace llvm;
+
+LegalityPredicate
+LegalityPredicates::all(LegalityPredicate P0, LegalityPredicate P1) {
+  return [=](const LegalityQuery &Query) {
+    return P0(Query) && P1(Query);
+  };
+}
+
+LegalityPredicate
+LegalityPredicates::typeInSet(unsigned TypeIdx,
+                              std::initializer_list<LLT> TypesInit) {
+  SmallVector<LLT, 4> Types = TypesInit;
+  return [=](const LegalityQuery &Query) {
+    return std::find(Types.begin(), Types.end(), Query.Types[TypeIdx]) != Types.end();
+  };
+}
+
+LegalityPredicate LegalityPredicates::typePairInSet(
+    unsigned TypeIdx0, unsigned TypeIdx1,
+    std::initializer_list<std::pair<LLT, LLT>> TypesInit) {
+  SmallVector<std::pair<LLT, LLT>, 4> Types = TypesInit;
+  return [=](const LegalityQuery &Query) {
+    std::pair<LLT, LLT> Match = {Query.Types[TypeIdx0], Query.Types[TypeIdx1]};
+    return std::find(Types.begin(), Types.end(), Match) != Types.end();
+  };
+}
+
+LegalityPredicate LegalityPredicates::isScalar(unsigned TypeIdx) {
+  return [=](const LegalityQuery &Query) {
+    return Query.Types[TypeIdx].isScalar();
+  };
+}
+
+LegalityPredicate LegalityPredicates::narrowerThan(unsigned TypeIdx,
+                                                   unsigned Size) {
+  return [=](const LegalityQuery &Query) {
+    const LLT &QueryTy = Query.Types[TypeIdx];
+    return QueryTy.isScalar() && QueryTy.getSizeInBits() < Size;
+  };
+}
+
+LegalityPredicate LegalityPredicates::widerThan(unsigned TypeIdx,
+                                                unsigned Size) {
+  return [=](const LegalityQuery &Query) {
+    const LLT &QueryTy = Query.Types[TypeIdx];
+    return QueryTy.isScalar() && QueryTy.getSizeInBits() > Size;
+  };
+}
+
+LegalityPredicate LegalityPredicates::sizeNotPow2(unsigned TypeIdx) {
+  return [=](const LegalityQuery &Query) {
+    const LLT &QueryTy = Query.Types[TypeIdx];
+    return QueryTy.isScalar() && !isPowerOf2_32(QueryTy.getSizeInBits());
+  };
+}
+
+LegalityPredicate LegalityPredicates::numElementsNotPow2(unsigned TypeIdx) {
+  return [=](const LegalityQuery &Query) {
+    const LLT &QueryTy = Query.Types[TypeIdx];
+    return QueryTy.isVector() && isPowerOf2_32(QueryTy.getNumElements());
+  };
+}