| Akira Hatanaka | 33ff5ae | 2011-09-09 23:14:58 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=mips < %s | FileCheck %s |
| Bruno Cardoso Lopes | 0cf2b2b | 2010-11-10 02:22:44 +0000 | [diff] [blame] | 2 | |
| 3 | ; CHECK: clz $2, $4 |
| 4 | define i32 @t1(i32 %X) nounwind readnone { |
| 5 | entry: |
| Chandler Carruth | ddbc274 | 2011-12-12 11:59:10 +0000 | [diff] [blame] | 6 | %tmp1 = tail call i32 @llvm.ctlz.i32(i32 %X, i1 true) |
| Bruno Cardoso Lopes | 0cf2b2b | 2010-11-10 02:22:44 +0000 | [diff] [blame] | 7 | ret i32 %tmp1 |
| 8 | } |
| 9 | |
| Chandler Carruth | ddbc274 | 2011-12-12 11:59:10 +0000 | [diff] [blame] | 10 | declare i32 @llvm.ctlz.i32(i32, i1) nounwind readnone |
| Bruno Cardoso Lopes | 0cf2b2b | 2010-11-10 02:22:44 +0000 | [diff] [blame] | 11 | |
| 12 | ; CHECK: clz $2, $4 |
| 13 | define i32 @t2(i32 %X) nounwind readnone { |
| 14 | entry: |
| Chandler Carruth | ddbc274 | 2011-12-12 11:59:10 +0000 | [diff] [blame] | 15 | %tmp1 = tail call i32 @llvm.ctlz.i32(i32 %X, i1 true) |
| Bruno Cardoso Lopes | 0cf2b2b | 2010-11-10 02:22:44 +0000 | [diff] [blame] | 16 | ret i32 %tmp1 |
| 17 | } |
| 18 | |
| 19 | ; CHECK: clo $2, $4 |
| 20 | define i32 @t3(i32 %X) nounwind readnone { |
| 21 | entry: |
| 22 | %neg = xor i32 %X, -1 |
| Chandler Carruth | ddbc274 | 2011-12-12 11:59:10 +0000 | [diff] [blame] | 23 | %tmp1 = tail call i32 @llvm.ctlz.i32(i32 %neg, i1 true) |
| Bruno Cardoso Lopes | 0cf2b2b | 2010-11-10 02:22:44 +0000 | [diff] [blame] | 24 | ret i32 %tmp1 |
| 25 | } |
| 26 | |
| 27 | ; CHECK: clo $2, $4 |
| 28 | define i32 @t4(i32 %X) nounwind readnone { |
| 29 | entry: |
| 30 | %neg = xor i32 %X, -1 |
| Chandler Carruth | ddbc274 | 2011-12-12 11:59:10 +0000 | [diff] [blame] | 31 | %tmp1 = tail call i32 @llvm.ctlz.i32(i32 %neg, i1 true) |
| Bruno Cardoso Lopes | 0cf2b2b | 2010-11-10 02:22:44 +0000 | [diff] [blame] | 32 | ret i32 %tmp1 |
| 33 | } |