| ; 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 | |
| } |