1; RUN: llc -mtriple=armv8-eabi %s -o - | FileCheck %s 2 3; CHECK-LABEL: rbit 4; CHECK: rbit r0, r0 5define i32 @rbit(i32 %t) { 6entry: 7 %rbit = call i32 @llvm.arm.rbit(i32 %t) 8 ret i32 %rbit 9} 10 11; CHECK-LABEL: rbit_constant 12; CHECK: mov r0, #0 13; CHECK: rbit r0, r0 14define i32 @rbit_constant() { 15entry: 16 %rbit.i = call i32 @llvm.arm.rbit(i32 0) 17 ret i32 %rbit.i 18} 19 20declare i32 @llvm.arm.rbit(i32) 21 22declare i32 @llvm.bitreverse.i32(i32) readnone 23 24; CHECK-LABEL: rbit_generic 25; CHECK: rbit r0, r0 26define i32 @rbit_generic(i32 %t) { 27entry: 28 %rbit = call i32 @llvm.bitreverse.i32(i32 %t) 29 ret i32 %rbit 30} 31 32