| ; RUN: llc < %s -march=arm -mattr=+v6t2 | FileCheck %s |
| |
| define i32 @f1(i32 %a) { |
| entry: |
| ; CHECK: f1: |
| ; CHECK: sbfx r0, r0, #0, #20 |
| %tmp = shl i32 %a, 12 |
| %tmp2 = ashr i32 %tmp, 12 |
| ret i32 %tmp2 |
| } |
| |
| define i32 @f2(i32 %a) { |
| entry: |
| ; CHECK: f2: |
| ; CHECK: bfc r0, #20, #12 |
| %tmp = shl i32 %a, 12 |
| %tmp2 = lshr i32 %tmp, 12 |
| ret i32 %tmp2 |
| } |
| |
| define i32 @f3(i32 %a) { |
| entry: |
| ; CHECK: f3: |
| ; CHECK: sbfx r0, r0, #5, #3 |
| %tmp = shl i32 %a, 24 |
| %tmp2 = ashr i32 %tmp, 29 |
| ret i32 %tmp2 |
| } |
| |
| define i32 @f4(i32 %a) { |
| entry: |
| ; CHECK: f4: |
| ; CHECK: ubfx r0, r0, #5, #3 |
| %tmp = shl i32 %a, 24 |
| %tmp2 = lshr i32 %tmp, 29 |
| ret i32 %tmp2 |
| } |
| |
| define i32 @f5(i32 %a) { |
| entry: |
| ; CHECK: f5: |
| ; CHECK-NOT: sbfx |
| ; CHECK: bx |
| %tmp = shl i32 %a, 3 |
| %tmp2 = ashr i32 %tmp, 1 |
| ret i32 %tmp2 |
| } |