diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -48164,6 +48164,25 @@
     }
   }
 
+  // cmpeq(or(X,Y),X) --> cmpeq(and(~X,Y),0)
+  if (CC == ISD::SETEQ && OpVT.isScalarInteger() && Subtarget.hasBMI()) {
+    auto MatchOrCmpEq = [&](SDValue N0, SDValue N1) {
+      if (N0.getOpcode() == ISD::OR && N->isOnlyUserOf(N0.getNode())) {
+        if (N0.getOperand(0) == N1)
+          return DAG.getNode(ISD::AND, DL, OpVT, DAG.getNOT(DL, N1, OpVT),
+                             N0.getOperand(1));
+        if (N0.getOperand(1) == N1)
+          return DAG.getNode(ISD::AND, DL, OpVT, DAG.getNOT(DL, N1, OpVT),
+                             N0.getOperand(0));
+      }
+      return SDValue();
+    };
+    if (SDValue AndN = MatchOrCmpEq(LHS, RHS))
+        return DAG.getSetCC(DL, VT, AndN, DAG.getConstant(0, DL, OpVT), CC);
+    if (SDValue AndN = MatchOrCmpEq(RHS, LHS))
+        return DAG.getSetCC(DL, VT, AndN, DAG.getConstant(0, DL, OpVT), CC);
+  }
+
   if (VT.isVector() && VT.getVectorElementType() == MVT::i1 &&
       (CC == ISD::SETNE || CC == ISD::SETEQ || ISD::isSignedIntSetCC(CC))) {
     // Using temporaries to avoid messing up operand ordering for later
diff --git a/llvm/test/CodeGen/X86/setcc-logic.ll b/llvm/test/CodeGen/X86/setcc-logic.ll
--- a/llvm/test/CodeGen/X86/setcc-logic.ll
+++ b/llvm/test/CodeGen/X86/setcc-logic.ll
@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+bmi | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefixes=CHECK,NOBMI
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+bmi | FileCheck %s --check-prefixes=CHECK,BMI
 
 define zeroext i1 @all_bits_clear(i32 %P, i32 %Q) nounwind {
 ; CHECK-LABEL: all_bits_clear:
@@ -607,51 +607,77 @@
   ret i1 %r
 }
 
-; TODO: PR44136 - fold cmpeq(or(X,Y),X) --> cmpeq(and(~X,Y),0)
+; PR44136 - fold cmpeq(or(X,Y),X) --> cmpeq(and(~X,Y),0)
 
 define i1 @or_cmp_eq_i64(i64 %x, i64 %y) {
-; CHECK-LABEL: or_cmp_eq_i64:
-; CHECK:       # %bb.0:
-; CHECK-NEXT:    orq %rdi, %rsi
-; CHECK-NEXT:    cmpq %rdi, %rsi
-; CHECK-NEXT:    sete %al
-; CHECK-NEXT:    retq
+; NOBMI-LABEL: or_cmp_eq_i64:
+; NOBMI:       # %bb.0:
+; NOBMI-NEXT:    orq %rdi, %rsi
+; NOBMI-NEXT:    cmpq %rdi, %rsi
+; NOBMI-NEXT:    sete %al
+; NOBMI-NEXT:    retq
+;
+; BMI-LABEL: or_cmp_eq_i64:
+; BMI:       # %bb.0:
+; BMI-NEXT:    andnq %rsi, %rdi, %rax
+; BMI-NEXT:    sete %al
+; BMI-NEXT:    retq
   %o = or i64 %x, %y
   %c = icmp eq i64 %o, %x
   ret i1 %c
 }
 
 define i1 @or_cmp_eq_i32(i32 %x, i32 %y) {
-; CHECK-LABEL: or_cmp_eq_i32:
-; CHECK:       # %bb.0:
-; CHECK-NEXT:    orl %esi, %edi
-; CHECK-NEXT:    cmpl %esi, %edi
-; CHECK-NEXT:    sete %al
-; CHECK-NEXT:    retq
+; NOBMI-LABEL: or_cmp_eq_i32:
+; NOBMI:       # %bb.0:
+; NOBMI-NEXT:    orl %esi, %edi
+; NOBMI-NEXT:    cmpl %esi, %edi
+; NOBMI-NEXT:    sete %al
+; NOBMI-NEXT:    retq
+;
+; BMI-LABEL: or_cmp_eq_i32:
+; BMI:       # %bb.0:
+; BMI-NEXT:    andnl %edi, %esi, %eax
+; BMI-NEXT:    sete %al
+; BMI-NEXT:    retq
   %o = or i32 %x, %y
   %c = icmp eq i32 %o, %y
   ret i1 %c
 }
 
 define i1 @or_cmp_eq_i16(i16 zeroext %x, i16 zeroext %y) {
-; CHECK-LABEL: or_cmp_eq_i16:
-; CHECK:       # %bb.0:
-; CHECK-NEXT:    orl %edi, %esi
-; CHECK-NEXT:    cmpw %si, %di
-; CHECK-NEXT:    sete %al
-; CHECK-NEXT:    retq
+; NOBMI-LABEL: or_cmp_eq_i16:
+; NOBMI:       # %bb.0:
+; NOBMI-NEXT:    orl %edi, %esi
+; NOBMI-NEXT:    cmpw %si, %di
+; NOBMI-NEXT:    sete %al
+; NOBMI-NEXT:    retq
+;
+; BMI-LABEL: or_cmp_eq_i16:
+; BMI:       # %bb.0:
+; BMI-NEXT:    notl %edi
+; BMI-NEXT:    testw %si, %di
+; BMI-NEXT:    sete %al
+; BMI-NEXT:    retq
   %o = or i16 %x, %y
   %c = icmp eq i16 %x, %o
   ret i1 %c
 }
 
 define i1 @or_cmp_eq_i8(i8 zeroext %x, i8 zeroext %y) {
-; CHECK-LABEL: or_cmp_eq_i8:
-; CHECK:       # %bb.0:
-; CHECK-NEXT:    orl %esi, %edi
-; CHECK-NEXT:    cmpb %dil, %sil
-; CHECK-NEXT:    sete %al
-; CHECK-NEXT:    retq
+; NOBMI-LABEL: or_cmp_eq_i8:
+; NOBMI:       # %bb.0:
+; NOBMI-NEXT:    orl %esi, %edi
+; NOBMI-NEXT:    cmpb %dil, %sil
+; NOBMI-NEXT:    sete %al
+; NOBMI-NEXT:    retq
+;
+; BMI-LABEL: or_cmp_eq_i8:
+; BMI:       # %bb.0:
+; BMI-NEXT:    notb %sil
+; BMI-NEXT:    testb %dil, %sil
+; BMI-NEXT:    sete %al
+; BMI-NEXT:    retq
   %o = or i8 %x, %y
   %c = icmp eq i8 %y, %o
   ret i1 %c