| Eric Christopher | 2b88e8f | 2011-07-14 06:23:09 +0000 | [diff] [blame^] | 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) | ||||
| 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) nounwind readnone | ||||