1; RUN: llc -mtriple=arm-eabi -mattr=+v7 %s -o - | FileCheck %s
2
3define i32 @f(i32 %a) nounwind readnone optsize ssp {
4entry:
5  %conv = zext i32 %a to i64
6  %tmp1 = tail call i64 @llvm.ctlz.i64(i64 %conv, i1 true)
7; CHECK: clz
8; CHECK-NOT: adds
9  %cast = trunc i64 %tmp1 to i32
10  %sub = sub nsw i32 63, %cast
11  ret i32 %sub
12}
13
14declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone
15