From aca7aab90d79df08ecadde798e2172f4995ab601 Mon Sep 17 00:00:00 2001
From: Florian Hahn <flo@fhahn.com>
Date: Mon, 2 Dec 2019 15:29:53 +0000
Subject: [PATCH] [PatternMatch] Add support for matching intrinsics with 5
 operands.

Summary: Also adds a test to the pattern matching unit tests.

Reviewers: spatel, craig.topper, RKSimon, majnemer, lebedev.ri

Reviewed By: spatel

Subscribers: merge_guards_bot, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70892
---
 llvm/include/llvm/IR/PatternMatch.h | 15 ++++++
 llvm/unittests/IR/PatternMatch.cpp  | 79 +++++++++++++++++++++++++++++
 2 files changed, 94 insertions(+)

diff --git a/llvm/include/llvm/IR/PatternMatch.h b/llvm/include/llvm/IR/PatternMatch.h
index 5d4ce4955b99..64ffb59a0b13 100644
--- a/llvm/include/llvm/IR/PatternMatch.h
+++ b/llvm/include/llvm/IR/PatternMatch.h
@@ -1736,6 +1736,12 @@ struct m_Intrinsic_Ty<T0, T1, T2, T3> {
                         Argument_match<T3>>;
 };
 
+template <typename T0, typename T1, typename T2, typename T3, typename T4>
+struct m_Intrinsic_Ty<T0, T1, T2, T3, T4> {
+  using Ty = match_combine_and<typename m_Intrinsic_Ty<T0, T1, T2, T3>::Ty,
+                               Argument_match<T4>>;
+};
+
 /// Match intrinsic calls like this:
 /// m_Intrinsic<Intrinsic::fabs>(m_Value(X))
 template <Intrinsic::ID IntrID> inline IntrinsicID_match m_Intrinsic() {
@@ -1766,6 +1772,15 @@ m_Intrinsic(const T0 &Op0, const T1 &Op1, const T2 &Op2, const T3 &Op3) {
   return m_CombineAnd(m_Intrinsic<IntrID>(Op0, Op1, Op2), m_Argument<3>(Op3));
 }
 
+template <Intrinsic::ID IntrID, typename T0, typename T1, typename T2,
+          typename T3, typename T4>
+inline typename m_Intrinsic_Ty<T0, T1, T2, T3, T4>::Ty
+m_Intrinsic(const T0 &Op0, const T1 &Op1, const T2 &Op2, const T3 &Op3,
+            const T4 &Op4) {
+  return m_CombineAnd(m_Intrinsic<IntrID>(Op0, Op1, Op2, Op3),
+                      m_Argument<4>(Op4));
+}
+
 // Helper intrinsic matching specializations.
 template <typename Opnd0>
 inline typename m_Intrinsic_Ty<Opnd0>::Ty m_BitReverse(const Opnd0 &Op0) {
diff --git a/llvm/unittests/IR/PatternMatch.cpp b/llvm/unittests/IR/PatternMatch.cpp
index f624024d584c..0c2ec36f8789 100644
--- a/llvm/unittests/IR/PatternMatch.cpp
+++ b/llvm/unittests/IR/PatternMatch.cpp
@@ -1133,6 +1133,85 @@ TEST_F(PatternMatchTest, WithOverflowInst) {
   EXPECT_EQ(Add, WOI);
 }
 
+TEST_F(PatternMatchTest, IntrinsicMatcher) {
+  Value *Name = IRB.CreateAlloca(IRB.getInt8Ty());
+  Value *Hash = IRB.getInt64(0);
+  Value *Num = IRB.getInt32(1);
+  Value *Index = IRB.getInt32(2);
+  Value *Step = IRB.getInt64(3);
+
+  Value *Ops[] = {Name, Hash, Num, Index, Step};
+  Module *M = BB->getParent()->getParent();
+  Function *TheFn =
+      Intrinsic::getDeclaration(M, Intrinsic::instrprof_increment_step);
+
+  Value *Intrinsic5 = CallInst::Create(TheFn, Ops, "", BB);
+
+  // Match without capturing.
+  EXPECT_TRUE(match(
+      Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                      m_Value(), m_Value(), m_Value(), m_Value(), m_Value())));
+  EXPECT_FALSE(match(
+      Intrinsic5, m_Intrinsic<Intrinsic::memmove>(
+                      m_Value(), m_Value(), m_Value(), m_Value(), m_Value())));
+
+  // Match with capturing.
+  Value *Arg1 = nullptr;
+  Value *Arg2 = nullptr;
+  Value *Arg3 = nullptr;
+  Value *Arg4 = nullptr;
+  Value *Arg5 = nullptr;
+  EXPECT_TRUE(
+      match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                            m_Value(Arg1), m_Value(Arg2), m_Value(Arg3),
+                            m_Value(Arg4), m_Value(Arg5))));
+  EXPECT_EQ(Arg1, Name);
+  EXPECT_EQ(Arg2, Hash);
+  EXPECT_EQ(Arg3, Num);
+  EXPECT_EQ(Arg4, Index);
+  EXPECT_EQ(Arg5, Step);
+
+  // Match specific second argument.
+  EXPECT_TRUE(
+      match(Intrinsic5,
+            m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                m_Value(), m_SpecificInt(0), m_Value(), m_Value(), m_Value())));
+  EXPECT_FALSE(
+      match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                            m_Value(), m_SpecificInt(10), m_Value(), m_Value(),
+                            m_Value())));
+
+  // Match specific third argument.
+  EXPECT_TRUE(
+      match(Intrinsic5,
+            m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                m_Value(), m_Value(), m_SpecificInt(1), m_Value(), m_Value())));
+  EXPECT_FALSE(
+      match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                            m_Value(), m_Value(), m_SpecificInt(10), m_Value(),
+                            m_Value())));
+
+  // Match specific fourth argument.
+  EXPECT_TRUE(
+      match(Intrinsic5,
+            m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                m_Value(), m_Value(), m_Value(), m_SpecificInt(2), m_Value())));
+  EXPECT_FALSE(
+      match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                            m_Value(), m_Value(), m_Value(), m_SpecificInt(10),
+                            m_Value())));
+
+  // Match specific fifth argument.
+  EXPECT_TRUE(
+      match(Intrinsic5,
+            m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                m_Value(), m_Value(), m_Value(), m_Value(), m_SpecificInt(3))));
+  EXPECT_FALSE(
+      match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>(
+                            m_Value(), m_Value(), m_Value(), m_Value(),
+                            m_SpecificInt(10))));
+}
+
 template <typename T> struct MutableConstTest : PatternMatchTest { };
 
 typedef ::testing::Types<std::tuple<Value*, Instruction*>,