1 ; RUN: llc < %s -march=arm -mattr=+v7 | FileCheck %s 2 3 define i32 @f(i32 %a) nounwind readnone optsize ssp { 4 entry: 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 14 declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone 15
