| Sjoerd Meijer | 96e10b5 | 2016-12-15 09:38:59 +0000 | [diff] [blame] | 1 | ; RUN: llc -mtriple=thumbv7m-linux-gnu < %s | FileCheck %s --check-prefix=CHECK --check-prefix=T2 |
| 2 | ; RUN: llc -mtriple=thumbv6m-linux-gnu < %s | FileCheck %s --check-prefix=CHECK --check-prefix=T1 |
| 3 | |
| 4 | ; CHECK-LABEL: single_bit: |
| 5 | ; CHECK: lsls r0, r0, #23 |
| 6 | ; T2-NEXT: mov |
| 7 | ; T2-NEXT: it |
| 8 | ; T1-NEXT: bmi |
| 9 | define i32 @single_bit(i32 %p) { |
| 10 | %a = and i32 %p, 256 |
| 11 | %b = icmp eq i32 %a, 0 |
| 12 | br i1 %b, label %true, label %false |
| 13 | |
| 14 | true: |
| 15 | ret i32 1 |
| 16 | |
| 17 | false: |
| 18 | ret i32 2 |
| 19 | } |
| 20 | |
| 21 | ; CHECK-LABEL: multi_bit_lsb_ubfx: |
| 22 | ; CHECK: lsls r0, r0, #24 |
| 23 | ; T2-NEXT: mov |
| 24 | ; T2-NEXT: it |
| 25 | ; T1-NEXT: beq |
| 26 | define i32 @multi_bit_lsb_ubfx(i32 %p) { |
| 27 | %a = and i32 %p, 255 |
| 28 | %b = icmp eq i32 %a, 0 |
| 29 | br i1 %b, label %true, label %false |
| 30 | |
| 31 | true: |
| 32 | ret i32 1 |
| 33 | |
| 34 | false: |
| 35 | ret i32 2 |
| 36 | } |
| 37 | |
| 38 | ; CHECK-LABEL: multi_bit_msb: |
| 39 | ; CHECK: lsrs r0, r0, #24 |
| 40 | ; T2-NEXT: mov |
| 41 | ; T2-NEXT: it |
| 42 | ; T1-NEXT: beq |
| 43 | define i32 @multi_bit_msb(i32 %p) { |
| 44 | %a = and i32 %p, 4278190080 ; 0xff000000 |
| 45 | %b = icmp eq i32 %a, 0 |
| 46 | br i1 %b, label %true, label %false |
| 47 | |
| 48 | true: |
| 49 | ret i32 1 |
| 50 | |
| 51 | false: |
| 52 | ret i32 2 |
| 53 | } |
| 54 | |
| 55 | ; CHECK-LABEL: multi_bit_nosb: |
| 56 | ; T1: lsls r0, r0, #8 |
| 57 | ; T1-NEXT: lsrs r0, r0, #24 |
| 58 | ; T2: tst.w |
| 59 | ; T2-NEXT: it |
| 60 | ; T1-NEXT: beq |
| 61 | define i32 @multi_bit_nosb(i32 %p) { |
| 62 | %a = and i32 %p, 16711680 ; 0x00ff0000 |
| 63 | %b = icmp eq i32 %a, 0 |
| 64 | br i1 %b, label %true, label %false |
| 65 | |
| 66 | true: |
| 67 | ret i32 1 |
| 68 | |
| 69 | false: |
| 70 | ret i32 2 |
| 71 | } |