1; RUN: opt < %s -instcombine -S | FileCheck %s 2 3define i32 @test1(i32 %p) { 4; CHECK-LABEL: @test1 5; CHECK-NEXT: ret i32 %p 6 %a = call i32 @llvm.bitreverse.i32(i32 %p) 7 %b = call i32 @llvm.bitreverse.i32(i32 %a) 8 ret i32 %b 9} 10 11declare i32 @llvm.bitreverse.i32(i32) readnone 12