| Dylan McKay | 9cf1dc1 | 2017-07-11 04:17:13 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -march=avr | FileCheck %s |
| 2 | |
| Dylan McKay | 2c59215 | 2017-07-16 22:31:07 +0000 | [diff] [blame] | 3 | ; CHECK-LABEL: relax_breq |
| Dylan McKay | 9cf1dc1 | 2017-07-11 04:17:13 +0000 | [diff] [blame] | 4 | ; CHECK: cpi r{{[0-9]+}}, 0 |
| 5 | ; CHECK: brne LBB0_1 |
| 6 | ; CHECK: rjmp LBB0_2 |
| 7 | ; LBB0_1: |
| 8 | |
| 9 | define i8 @relax_breq(i1 %a) { |
| 10 | entry-block: |
| 11 | br i1 %a, label %hello, label %finished |
| 12 | |
| 13 | hello: |
| 14 | call void asm sideeffect "nop", ""() |
| 15 | call void asm sideeffect "nop", ""() |
| 16 | call void asm sideeffect "nop", ""() |
| 17 | call void asm sideeffect "nop", ""() |
| 18 | call void asm sideeffect "nop", ""() |
| 19 | call void asm sideeffect "nop", ""() |
| 20 | call void asm sideeffect "nop", ""() |
| 21 | call void asm sideeffect "nop", ""() |
| 22 | call void asm sideeffect "nop", ""() |
| 23 | call void asm sideeffect "nop", ""() |
| 24 | call void asm sideeffect "nop", ""() |
| 25 | call void asm sideeffect "nop", ""() |
| 26 | call void asm sideeffect "nop", ""() |
| 27 | call void asm sideeffect "nop", ""() |
| 28 | call void asm sideeffect "nop", ""() |
| 29 | call void asm sideeffect "nop", ""() |
| 30 | call void asm sideeffect "nop", ""() |
| 31 | call void asm sideeffect "nop", ""() |
| 32 | call void asm sideeffect "nop", ""() |
| 33 | call void asm sideeffect "nop", ""() |
| 34 | call void asm sideeffect "nop", ""() |
| 35 | call void asm sideeffect "nop", ""() |
| 36 | call void asm sideeffect "nop", ""() |
| 37 | call void asm sideeffect "nop", ""() |
| 38 | call void asm sideeffect "nop", ""() |
| 39 | call void asm sideeffect "nop", ""() |
| 40 | call void asm sideeffect "nop", ""() |
| 41 | call void asm sideeffect "nop", ""() |
| 42 | call void asm sideeffect "nop", ""() |
| 43 | call void asm sideeffect "nop", ""() |
| 44 | call void asm sideeffect "nop", ""() |
| 45 | call void asm sideeffect "nop", ""() |
| 46 | call void asm sideeffect "nop", ""() |
| 47 | call void asm sideeffect "nop", ""() |
| 48 | call void asm sideeffect "nop", ""() |
| 49 | call void asm sideeffect "nop", ""() |
| 50 | call void asm sideeffect "nop", ""() |
| 51 | call void asm sideeffect "nop", ""() |
| 52 | call void asm sideeffect "nop", ""() |
| 53 | call void asm sideeffect "nop", ""() |
| 54 | call void asm sideeffect "nop", ""() |
| 55 | call void asm sideeffect "nop", ""() |
| 56 | call void asm sideeffect "nop", ""() |
| 57 | call void asm sideeffect "nop", ""() |
| 58 | call void asm sideeffect "nop", ""() |
| 59 | call void asm sideeffect "nop", ""() |
| 60 | call void asm sideeffect "nop", ""() |
| 61 | call void asm sideeffect "nop", ""() |
| 62 | call void asm sideeffect "nop", ""() |
| 63 | call void asm sideeffect "nop", ""() |
| 64 | br label %finished |
| 65 | finished: |
| 66 | ret i8 3 |
| 67 | } |
| 68 | |
| Dylan McKay | 2c59215 | 2017-07-16 22:31:07 +0000 | [diff] [blame] | 69 | ; CHECK-LABEL: no_relax_breq |
| Dylan McKay | 9cf1dc1 | 2017-07-11 04:17:13 +0000 | [diff] [blame] | 70 | ; CHECK: cpi r{{[0-9]+}}, 0 |
| 71 | ; CHECK: breq [[END_BB:LBB[0-9]+_[0-9]+]] |
| 72 | ; CHECK: nop |
| 73 | ; ... |
| 74 | ; LBB0_1: |
| 75 | define i8 @no_relax_breq(i1 %a) { |
| 76 | entry-block: |
| 77 | br i1 %a, label %hello, label %finished |
| 78 | |
| 79 | hello: |
| 80 | ; There are not enough NOPs to require relaxation. |
| 81 | call void asm sideeffect "nop", ""() |
| 82 | call void asm sideeffect "nop", ""() |
| 83 | call void asm sideeffect "nop", ""() |
| 84 | call void asm sideeffect "nop", ""() |
| 85 | call void asm sideeffect "nop", ""() |
| 86 | call void asm sideeffect "nop", ""() |
| 87 | call void asm sideeffect "nop", ""() |
| 88 | call void asm sideeffect "nop", ""() |
| 89 | call void asm sideeffect "nop", ""() |
| 90 | call void asm sideeffect "nop", ""() |
| 91 | call void asm sideeffect "nop", ""() |
| 92 | br label %finished |
| 93 | finished: |
| 94 | ret i8 3 |
| 95 | } |
| 96 | |