[ValueTracking] add UGT/UGE and SGT/SGE in `isImpliedCondOperands`

Partially `fix` https://github.com/llvm/llvm-project/issues/62441.

Extend isImpliedCondOperands() to handle ugt/uge and sgt/sge predicates.

alive2 proof: https://alive2.llvm.org/ce/z/jLFDAv and
https://alive2.llvm.org/ce/z/Z8idUd

Differential Revision: https://reviews.llvm.org/D149510

1 files changed, 14 insertions, 0 deletions

diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index ec05fa9..1a15ad4 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -8144,12 +8144,26 @@ isImpliedCondOperands(CmpInst::Predicate Pred, const Value *ALHS,
       return true;
     return std::nullopt;
 
+  case CmpInst::ICMP_SGT:
+  case CmpInst::ICMP_SGE:
+    if (isTruePredicate(CmpInst::ICMP_SLE, ALHS, BLHS, DL, Depth) &&
+        isTruePredicate(CmpInst::ICMP_SLE, BRHS, ARHS, DL, Depth))
+      return true;
+    return std::nullopt;
+
   case CmpInst::ICMP_ULT:
   case CmpInst::ICMP_ULE:
     if (isTruePredicate(CmpInst::ICMP_ULE, BLHS, ALHS, DL, Depth) &&
         isTruePredicate(CmpInst::ICMP_ULE, ARHS, BRHS, DL, Depth))
       return true;
     return std::nullopt;
+
+  case CmpInst::ICMP_UGT:
+  case CmpInst::ICMP_UGE:
+    if (isTruePredicate(CmpInst::ICMP_ULE, ALHS, BLHS, DL, Depth) &&
+        isTruePredicate(CmpInst::ICMP_ULE, BRHS, ARHS, DL, Depth))
+      return true;
+    return std::nullopt;
   }
 }