; RUN: opt -mergeicmps -S -o - %s | FileCheck %s

%"struct.std::pair" = type { i32, i32 }

define zeroext i1 @opeq(
    %"struct.std::pair"* nocapture readonly dereferenceable(8) %a,
    %"struct.std::pair"* nocapture readonly dereferenceable(8) %b) local_unnamed_addr #0 {
entry:
  %first.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 0
  %0 = load i32, i32* %first.i, align 4
  %first1.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 0
  %1 = load i32, i32* %first1.i, align 4
  %cmp.i = icmp eq i32 %0, %1
  br i1 %cmp.i, label %land.rhs.i, label %opeq1.exit

land.rhs.i:
  %second.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %a, i64 0, i32 1
  %2 = load volatile i32, i32* %second.i, align 4
  %second2.i = getelementptr inbounds %"struct.std::pair", %"struct.std::pair"* %b, i64 0, i32 1
  %3 = load i32, i32* %second2.i, align 4
  %cmp3.i = icmp eq i32 %2, %3
  br label %opeq1.exit

opeq1.exit:
  %4 = phi i1 [ false, %entry ], [ %cmp3.i, %land.rhs.i ]
  ret i1 %4
; CHECK-LABEL: @opeq(
; CHECK-NOT: memcmp
}