vendor/llvm/llvm-trunk-r338150

1 files changed, 101 insertions, 0 deletions

diff --git a/lib/CodeGen/GlobalISel/LegalityPredicates.cpp b/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
new file mode 100644
index 000000000000..344f573a67f5
--- /dev/null
+++ b/lib/CodeGen/GlobalISel/LegalityPredicates.cpp
@@ -0,0 +1,101 @@
+//===- 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::typeIs(unsigned TypeIdx, LLT Type) {
+  return
+      [=](const LegalityQuery &Query) { return Query.Types[TypeIdx] == Type; };
+}
+
+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::typePairAndMemSizeInSet(
+    unsigned TypeIdx0, unsigned TypeIdx1, unsigned MMOIdx,
+    std::initializer_list<TypePairAndMemSize> TypesAndMemSizeInit) {
+  SmallVector<TypePairAndMemSize, 4> TypesAndMemSize = TypesAndMemSizeInit;
+  return [=](const LegalityQuery &Query) {
+    TypePairAndMemSize Match = {Query.Types[TypeIdx0], Query.Types[TypeIdx1],
+                                Query.MMODescrs[MMOIdx].Size};
+    return std::find(TypesAndMemSize.begin(), TypesAndMemSize.end(), Match) !=
+           TypesAndMemSize.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::memSizeInBytesNotPow2(unsigned MMOIdx) {
+  return [=](const LegalityQuery &Query) {
+    return !isPowerOf2_32(Query.MMODescrs[MMOIdx].Size /* In Bytes */);
+  };
+}
+
+LegalityPredicate LegalityPredicates::numElementsNotPow2(unsigned TypeIdx) {
+  return [=](const LegalityQuery &Query) {
+    const LLT &QueryTy = Query.Types[TypeIdx];
+    return QueryTy.isVector() && isPowerOf2_32(QueryTy.getNumElements());
+  };
+}
+
+LegalityPredicate LegalityPredicates::atomicOrderingAtLeastOrStrongerThan(
+    unsigned MMOIdx, AtomicOrdering Ordering) {
+  return [=](const LegalityQuery &Query) {
+    return isAtLeastOrStrongerThan(Query.MMODescrs[MMOIdx].Ordering, Ordering);
+  };
+}