[PATCH] D64037: [IR][PatternMatch] introduce m_Unless() matcher
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Thu Jul 25 06:36:36 PDT 2019
This revision was automatically updated to reflect the committed changes.
Closed by commit rL367016: [IR][PatternMatch] introduce m_Unless() matcher (authored by lebedevri, committed by ).
Changed prior to commit:
https://reviews.llvm.org/D64037?vs=209729&id=211736#toc
Repository:
rL LLVM
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D64037/new/
https://reviews.llvm.org/D64037
Files:
llvm/trunk/include/llvm/IR/PatternMatch.h
llvm/trunk/unittests/IR/PatternMatch.cpp
Index: llvm/trunk/unittests/IR/PatternMatch.cpp
===================================================================
--- llvm/trunk/unittests/IR/PatternMatch.cpp
+++ llvm/trunk/unittests/IR/PatternMatch.cpp
@@ -454,6 +454,22 @@
.match(NegOne));
}
+TEST_F(PatternMatchTest, Unless) {
+ Value *X = IRB.CreateAdd(IRB.getInt32(1), IRB.getInt32(0));
+
+ EXPECT_TRUE(m_Add(m_One(), m_Zero()).match(X));
+ EXPECT_FALSE(m_Add(m_Zero(), m_One()).match(X));
+
+ EXPECT_FALSE(m_Unless(m_Add(m_One(), m_Zero())).match(X));
+ EXPECT_TRUE(m_Unless(m_Add(m_Zero(), m_One())).match(X));
+
+ EXPECT_TRUE(m_c_Add(m_One(), m_Zero()).match(X));
+ EXPECT_TRUE(m_c_Add(m_Zero(), m_One()).match(X));
+
+ EXPECT_FALSE(m_Unless(m_c_Add(m_One(), m_Zero())).match(X));
+ EXPECT_FALSE(m_Unless(m_c_Add(m_Zero(), m_One())).match(X));
+}
+
TEST_F(PatternMatchTest, CommutativeDeferredValue) {
Value *X = IRB.getInt32(1);
Value *Y = IRB.getInt32(2);
Index: llvm/trunk/include/llvm/IR/PatternMatch.h
===================================================================
--- llvm/trunk/include/llvm/IR/PatternMatch.h
+++ llvm/trunk/include/llvm/IR/PatternMatch.h
@@ -88,6 +88,20 @@
/// Match an arbitrary Constant and ignore it.
inline class_match<Constant> m_Constant() { return class_match<Constant>(); }
+/// Inverting matcher
+template <typename Ty> struct match_unless {
+ Ty M;
+
+ match_unless(const Ty &Matcher) : M(Matcher) {}
+
+ template <typename ITy> bool match(ITy *V) { return !M.match(V); }
+};
+
+/// Match if the inner matcher does *NOT* match.
+template <typename Ty> inline match_unless<Ty> m_Unless(const Ty &M) {
+ return match_unless<Ty>(M);
+}
+
/// Matching combinators
template <typename LTy, typename RTy> struct match_combine_or {
LTy L;
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