| David Green | 2f9eed6 | 2019-04-23 11:46:58 +0000 | [diff] [blame] | 1 | ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| 2 | ; RUN: llc -mtriple=thumbv8m.main-none-none-eabi %s -o - -verify-machineinstrs | FileCheck %s |
| 3 | |
| 4 | declare i32 @fn(i32) #0 |
| 5 | |
| 6 | define i32 @f1(i32 %a) #0 { |
| 7 | ; CHECK-LABEL: f1: |
| 8 | ; CHECK: @ %bb.0: @ %entry |
| 9 | ; CHECK-NEXT: .save {r4, lr} |
| 10 | ; CHECK-NEXT: push {r4, lr} |
| 11 | ; CHECK-NEXT: mov r4, r0 |
| 12 | ; CHECK-NEXT: bl fn |
| 13 | ; CHECK-NEXT: movs r0, #0 |
| 14 | ; CHECK-NEXT: cbz r4, .LBB0_2 |
| 15 | ; CHECK-NEXT: @ %bb.1: @ %return |
| 16 | ; CHECK-NEXT: pop {r4, pc} |
| 17 | ; CHECK-NEXT: .LBB0_2: @ %if.end |
| 18 | ; CHECK-NEXT: bl fn |
| 19 | ; CHECK-NEXT: adds r0, #1 |
| 20 | ; CHECK-NEXT: pop {r4, pc} |
| 21 | entry: |
| 22 | %call = tail call i32 @fn(i32 %a) #2 |
| 23 | %tobool = icmp eq i32 %a, 0 |
| 24 | br i1 %tobool, label %if.end, label %return |
| 25 | |
| 26 | if.end: ; preds = %entry |
| 27 | %call1 = tail call i32 @fn(i32 0) #2 |
| 28 | %add = add nsw i32 %call1, 1 |
| 29 | br label %return |
| 30 | |
| 31 | return: ; preds = %entry, %if.end |
| 32 | %retval.0 = phi i32 [ %add, %if.end ], [ 0, %entry ] |
| 33 | ret i32 %retval.0 |
| 34 | } |
| 35 | |
| 36 | define i32 @f2(i32 %a) #0 { |
| 37 | ; CHECK-LABEL: f2: |
| 38 | ; CHECK: @ %bb.0: @ %entry |
| 39 | ; CHECK-NEXT: .save {r4, lr} |
| 40 | ; CHECK-NEXT: push {r4, lr} |
| 41 | ; CHECK-NEXT: mov r4, r0 |
| 42 | ; CHECK-NEXT: bl fn |
| 43 | ; CHECK-NEXT: movs r0, #0 |
| 44 | ; CHECK-NEXT: cmp r4, #1 |
| 45 | ; CHECK-NEXT: bne .LBB1_2 |
| 46 | ; CHECK-NEXT: @ %bb.1: @ %if.end |
| 47 | ; CHECK-NEXT: bl fn |
| 48 | ; CHECK-NEXT: adds r0, #1 |
| 49 | ; CHECK-NEXT: .LBB1_2: @ %return |
| 50 | ; CHECK-NEXT: pop {r4, pc} |
| 51 | entry: |
| 52 | %call = tail call i32 @fn(i32 %a) #2 |
| 53 | %tobool = icmp eq i32 %a, 1 |
| 54 | br i1 %tobool, label %if.end, label %return |
| 55 | |
| 56 | if.end: ; preds = %entry |
| 57 | %call1 = tail call i32 @fn(i32 0) #2 |
| 58 | %add = add nsw i32 %call1, 1 |
| 59 | br label %return |
| 60 | |
| 61 | return: ; preds = %entry, %if.end |
| 62 | %retval.0 = phi i32 [ %add, %if.end ], [ 0, %entry ] |
| 63 | ret i32 %retval.0 |
| 64 | } |
| 65 | |
| 66 | define void @f3(i32 %x) #0 { |
| 67 | ; CHECK-LABEL: f3: |
| 68 | ; CHECK: @ %bb.0: @ %entry |
| Oliver Stannard | a294d9e | 2020-04-06 10:33:55 +0100 | [diff] [blame] | 69 | ; CHECK-NEXT: cmp r0, #1 |
| 70 | ; CHECK-NEXT: bne .LBB2_2 |
| 71 | ; CHECK-NEXT: @ %bb.1: @ %t |
| David Green | 2f9eed6 | 2019-04-23 11:46:58 +0000 | [diff] [blame] | 72 | ; CHECK-NEXT: .save {r7, lr} |
| 73 | ; CHECK-NEXT: push {r7, lr} |
| Oliver Stannard | a294d9e | 2020-04-06 10:33:55 +0100 | [diff] [blame] | 74 | ; CHECK-NEXT: movs r0, #0 |
| 75 | ; CHECK-NEXT: bl fn |
| 76 | ; CHECK-NEXT: pop.w {r7, lr} |
| 77 | ; CHECK-NEXT: .LBB2_2: @ %f |
| 78 | ; CHECK-NEXT: bx lr |
| David Green | 2f9eed6 | 2019-04-23 11:46:58 +0000 | [diff] [blame] | 79 | entry: |
| 80 | %p = icmp eq i32 %x, 1 |
| 81 | br i1 %p, label %t, label %f |
| 82 | |
| 83 | t: |
| 84 | call i32 @fn(i32 0) |
| 85 | br label %f |
| 86 | |
| 87 | f: |
| 88 | ret void |
| 89 | } |
| 90 | |
| 91 | attributes #0 = { minsize nounwind optsize } |
| 92 | |