combine clauses with same output ; NFCI

llvm-svn: 258062

1 files changed, 3 insertions, 8 deletions

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
index 400b2f56918..b94f49461f9 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
@@ -915,15 +915,10 @@ Value *InstCombiner::FoldAndOfICmps(ICmpInst *LHS, ICmpInst *RHS) {
 
   if (LHSCst == RHSCst && LHSCC == RHSCC) {
     // (icmp ult A, C) & (icmp ult B, C) --> (icmp ult (A|B), C)
-    // where C is a power of 2
-    if (LHSCC == ICmpInst::ICMP_ULT &&
-        LHSCst->getValue().isPowerOf2()) {
-      Value *NewOr = Builder->CreateOr(Val, Val2);
-      return Builder->CreateICmp(LHSCC, NewOr, LHSCst);
-    }
-
+    // where C is a power of 2 or
     // (icmp eq A, 0) & (icmp eq B, 0) --> (icmp eq (A|B), 0)
-    if (LHSCC == ICmpInst::ICMP_EQ && LHSCst->isZero()) {
+    if ((LHSCC == ICmpInst::ICMP_ULT && LHSCst->getValue().isPowerOf2()) ||
+        (LHSCC == ICmpInst::ICMP_EQ && LHSCst->isZero())) {
       Value *NewOr = Builder->CreateOr(Val, Val2);
       return Builder->CreateICmp(LHSCC, NewOr, LHSCst);
     }