| Dan Gohman | da594cf | 2009-09-09 00:09:15 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=thumb -mattr=+thumb2,+v7a | FileCheck %s |
| David Goodwin | 71ee46b | 2009-06-26 22:37:07 +0000 | [diff] [blame] | 2 | |
| 3 | define i32 @f1(i32 %a) { |
| Evan Cheng | 02f6f9f | 2009-08-10 23:56:04 +0000 | [diff] [blame] | 4 | ; CHECK: f1: |
| 5 | ; CHECK: rev r0, r0 |
| David Goodwin | 71ee46b | 2009-06-26 22:37:07 +0000 | [diff] [blame] | 6 | %tmp = tail call i32 @llvm.bswap.i32(i32 %a) |
| 7 | ret i32 %tmp |
| 8 | } |
| 9 | |
| 10 | declare i32 @llvm.bswap.i32(i32) nounwind readnone |
| Evan Cheng | b4c98a3 | 2009-08-18 05:43:23 +0000 | [diff] [blame] | 11 | |
| 12 | define i32 @f2(i32 %X) { |
| 13 | ; CHECK: f2: |
| 14 | ; CHECK: revsh r0, r0 |
| 15 | %tmp1 = lshr i32 %X, 8 |
| 16 | %tmp1.upgrd.1 = trunc i32 %tmp1 to i16 |
| 17 | %tmp3 = trunc i32 %X to i16 |
| 18 | %tmp2 = and i16 %tmp1.upgrd.1, 255 |
| 19 | %tmp4 = shl i16 %tmp3, 8 |
| 20 | %tmp5 = or i16 %tmp2, %tmp4 |
| 21 | %tmp5.upgrd.2 = sext i16 %tmp5 to i32 |
| 22 | ret i32 %tmp5.upgrd.2 |
| 23 | } |