| Jim Grosbach | fcfac37 | 2009-11-16 19:46:46 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s |
| Evan Cheng | 0f994ed | 2009-07-03 01:43:10 +0000 | [diff] [blame] | 2 | |
| 3 | define i8 @test1(i32 %A.u) zeroext { |
| Jim Grosbach | fcfac37 | 2009-11-16 19:46:46 +0000 | [diff] [blame] | 4 | ; CHECK: test1 |
| 5 | ; CHECK: uxtb r0, r0 |
| Evan Cheng | 0f994ed | 2009-07-03 01:43:10 +0000 | [diff] [blame] | 6 | %B.u = trunc i32 %A.u to i8 |
| 7 | ret i8 %B.u |
| 8 | } |
| 9 | |
| 10 | define i32 @test2(i32 %A.u, i32 %B.u) zeroext { |
| Jim Grosbach | fcfac37 | 2009-11-16 19:46:46 +0000 | [diff] [blame] | 11 | ; CHECK: test2 |
| 12 | ; CHECK: uxtab r0, r0, r1 |
| Evan Cheng | 0f994ed | 2009-07-03 01:43:10 +0000 | [diff] [blame] | 13 | %C.u = trunc i32 %B.u to i8 |
| 14 | %D.u = zext i8 %C.u to i32 |
| 15 | %E.u = add i32 %A.u, %D.u |
| 16 | ret i32 %E.u |
| 17 | } |
| 18 | |
| 19 | define i32 @test3(i32 %A.u) zeroext { |
| Jim Grosbach | fcfac37 | 2009-11-16 19:46:46 +0000 | [diff] [blame] | 20 | ; CHECK: test3 |
| 21 | ; CHECK: uxth.w r0, r0, ror #8 |
| Evan Cheng | 0f994ed | 2009-07-03 01:43:10 +0000 | [diff] [blame] | 22 | %B.u = lshr i32 %A.u, 8 |
| 23 | %C.u = shl i32 %A.u, 24 |
| 24 | %D.u = or i32 %B.u, %C.u |
| 25 | %E.u = trunc i32 %D.u to i16 |
| 26 | %F.u = zext i16 %E.u to i32 |
| 27 | ret i32 %F.u |
| 28 | } |