| ; RUN: llc < %s -march=arm -mattr=+v7 | FileCheck %s | |
| define i32 @f(i32 %a) nounwind readnone optsize ssp { | |
| entry: | |
| %conv = zext i32 %a to i64 | |
| %tmp1 = tail call i64 @llvm.ctlz.i64(i64 %conv, i1 true) | |
| ; CHECK: clz | |
| ; CHECK-NOT: adds | |
| %cast = trunc i64 %tmp1 to i32 | |
| %sub = sub nsw i32 63, %cast | |
| ret i32 %sub | |
| } | |
| declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone |