[llvm] 0c18415 - zz

[Roman Lebedev via llvm-commits]

Author: Roman Lebedev
Date: 2021-04-10T19:09:17+03:00
New Revision: 0c184154969c020db416bd7066af80ffd2a27ac4

URL: https://github.com/llvm/llvm-project/commit/0c184154969c020db416bd7066af80ffd2a27ac4
DIFF: https://github.com/llvm/llvm-project/commit/0c184154969c020db416bd7066af80ffd2a27ac4.diff

LOG: zz

Added: 
    

Modified: 
    llvm/include/llvm/IR/IntrinsicInst.h

Removed: 
    


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diff  --git a/llvm/include/llvm/IR/IntrinsicInst.h b/llvm/include/llvm/IR/IntrinsicInst.h
index 6c825d380fc95..b688ece7067e2 100644
--- a/llvm/include/llvm/IR/IntrinsicInst.h
+++ b/llvm/include/llvm/IR/IntrinsicInst.h
@@ -458,6 +458,47 @@ class ConstrainedFPCmpIntrinsic : public ConstrainedFPIntrinsic {
   }
 };
 
+/// This class represents min/max intrinsics.
+class LimitingIntrinsic : public IntrinsicInst {
+public:
+  static bool classof(const IntrinsicInst *I) {
+    switch (I->getIntrinsicID()) {
+    case Intrinsic::umin:
+    case Intrinsic::umax:
+    case Intrinsic::smin:
+    case Intrinsic::smax:
+      return true;
+    default:
+      return false;
+    }
+  }
+  static bool classof(const Value *V) {
+    return isa<IntrinsicInst>(V) && classof(cast<IntrinsicInst>(V));
+  }
+
+  Value *getLHS() const { return const_cast<Value *>(getArgOperand(0)); }
+  Value *getRHS() const { return const_cast<Value *>(getArgOperand(1)); }
+
+  /// Returns the comparison predicate underlying the intrinsic.
+  ICmpInst::Predicate getPredicate() const {
+    switch (getIntrinsicID()) {
+    case Intrinsic::umin:
+      return ICmpInst::Predicate::ICMP_ULT;
+    case Intrinsic::umax:
+      return ICmpInst::Predicate::ICMP_UGT;
+    case Intrinsic::smin:
+      return ICmpInst::Predicate::ICMP_SLT;
+    case Intrinsic::smax:
+      return ICmpInst::Predicate::ICMP_SGT;
+    default:
+      llvm_unreachable("Invalid intrinsic");
+    }
+  }
+
+  /// Whether the intrinsic is signed or unsigned.
+  bool isSigned() const { return ICmpInst::isSigned(getPredicate()); };
+};
+
 /// This class represents an intrinsic that is based on a binary operation.
 /// This includes op.with.overflow and saturating add/sub intrinsics.
 class BinaryOpIntrinsic : public IntrinsicInst {