| John Brawn | 75d76e5 | 2017-06-28 14:11:15 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -mtriple=thumbv7m -mcpu=cortex-m7 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-BP |
| 2 | ; RUN: llc < %s -mtriple=thumbv7m -mcpu=cortex-m3 | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-NOBP |
| 3 | |
| 4 | declare void @otherfn() |
| 5 | |
| 6 | ; CHECK-LABEL: triangle1: |
| 7 | ; CHECK: itt ne |
| 8 | ; CHECK: movne |
| 9 | ; CHECK: strne |
| 10 | define i32 @triangle1(i32 %n, i32* %p) { |
| 11 | entry: |
| 12 | %tobool = icmp eq i32 %n, 0 |
| 13 | br i1 %tobool, label %if.end, label %if.then |
| 14 | |
| 15 | if.then: |
| 16 | store i32 1, i32* %p, align 4 |
| 17 | br label %if.end |
| 18 | |
| 19 | if.end: |
| 20 | tail call void @otherfn() |
| 21 | ret i32 0 |
| 22 | } |
| 23 | |
| 24 | ; CHECK-LABEL: triangle2: |
| 25 | ; CHECK-BP: itttt ne |
| 26 | ; CHECK-BP: movne |
| 27 | ; CHECK-BP: strne |
| 28 | ; CHECK-BP: movne |
| 29 | ; CHECK-BP: strne |
| 30 | ; CHECK-NOBP: cbz |
| 31 | ; CHECK-NOBP: movs |
| 32 | ; CHECK-NOBP: str |
| 33 | ; CHECK-NOBP: movs |
| 34 | ; CHECK-NOBP: str |
| 35 | define i32 @triangle2(i32 %n, i32* %p, i32* %q) { |
| 36 | entry: |
| 37 | %tobool = icmp eq i32 %n, 0 |
| 38 | br i1 %tobool, label %if.end, label %if.then |
| 39 | |
| 40 | if.then: |
| 41 | store i32 1, i32* %p, align 4 |
| 42 | store i32 2, i32* %q, align 4 |
| 43 | br label %if.end |
| 44 | |
| 45 | if.end: |
| 46 | tail call void @otherfn() |
| 47 | ret i32 0 |
| 48 | } |
| 49 | |
| 50 | ; CHECK-LABEL: triangle3: |
| 51 | ; CHECK: cbz |
| 52 | ; CHECK: movs |
| 53 | ; CHECK: str |
| 54 | ; CHECK: movs |
| 55 | ; CHECK: str |
| 56 | ; CHECK: movs |
| 57 | ; CHECK: str |
| 58 | define i32 @triangle3(i32 %n, i32* %p, i32* %q, i32* %r) { |
| 59 | entry: |
| 60 | %tobool = icmp eq i32 %n, 0 |
| 61 | br i1 %tobool, label %if.end, label %if.then |
| 62 | |
| 63 | if.then: |
| 64 | store i32 1, i32* %p, align 4 |
| 65 | store i32 2, i32* %q, align 4 |
| 66 | store i32 3, i32* %r, align 4 |
| 67 | br label %if.end |
| 68 | |
| 69 | if.end: |
| 70 | tail call void @otherfn() |
| 71 | ret i32 0 |
| 72 | } |
| 73 | |
| 74 | ; CHECK-LABEL: diamond1: |
| 75 | ; CHECK: ite eq |
| 76 | ; CHECK: ldreq |
| 77 | ; CHECK: strne |
| 78 | define i32 @diamond1(i32 %n, i32* %p) { |
| 79 | entry: |
| 80 | %tobool = icmp eq i32 %n, 0 |
| 81 | br i1 %tobool, label %if.else, label %if.then |
| 82 | |
| 83 | if.then: |
| 84 | store i32 %n, i32* %p, align 4 |
| 85 | br label %if.end |
| 86 | |
| 87 | if.else: |
| 88 | %0 = load i32, i32* %p, align 4 |
| 89 | br label %if.end |
| 90 | |
| 91 | if.end: |
| 92 | %n.addr.0 = phi i32 [ %n, %if.then ], [ %0, %if.else ] |
| 93 | tail call void @otherfn() |
| 94 | ret i32 %n.addr.0 |
| 95 | } |
| 96 | |
| 97 | ; CHECK-LABEL: diamond2: |
| 98 | ; CHECK-BP: itte |
| 99 | ; CHECK-BP: streq |
| 100 | ; CHECK-BP: ldreq |
| 101 | ; CHECK-BP: strne |
| 102 | ; CHECK-NOBP: cbz |
| 103 | ; CHECK-NOBP: str |
| 104 | ; CHECK-NOBP: b |
| 105 | ; CHECK-NOBP: str |
| 106 | ; CHECK-NOBP: ldr |
| 107 | define i32 @diamond2(i32 %n, i32 %m, i32* %p, i32* %q) { |
| 108 | entry: |
| 109 | %tobool = icmp eq i32 %n, 0 |
| 110 | br i1 %tobool, label %if.else, label %if.then |
| 111 | |
| 112 | if.then: |
| 113 | store i32 %n, i32* %p, align 4 |
| 114 | br label %if.end |
| 115 | |
| 116 | if.else: |
| 117 | store i32 %m, i32* %q, align 4 |
| 118 | %0 = load i32, i32* %p, align 4 |
| 119 | br label %if.end |
| 120 | |
| 121 | if.end: |
| 122 | %n.addr.0 = phi i32 [ %n, %if.then ], [ %0, %if.else ] |
| 123 | tail call void @otherfn() |
| 124 | ret i32 %n.addr.0 |
| 125 | } |
| 126 | |
| 127 | ; CHECK-LABEL: diamond3: |
| 128 | ; CHECK: cbz |
| 129 | ; CHECK: movs |
| 130 | ; CHECK: str |
| 131 | ; CHECK: b |
| 132 | ; CHECK: ldr |
| 133 | ; CHECK: ldr |
| 134 | ; CHECK: adds |
| 135 | define i32 @diamond3(i32 %n, i32* %p, i32* %q) { |
| 136 | entry: |
| 137 | %tobool = icmp eq i32 %n, 0 |
| 138 | br i1 %tobool, label %if.else, label %if.then |
| 139 | |
| 140 | if.then: |
| 141 | store i32 1, i32* %p, align 4 |
| 142 | br label %if.end |
| 143 | |
| 144 | if.else: |
| 145 | %0 = load i32, i32* %p, align 4 |
| 146 | %1 = load i32, i32* %q, align 4 |
| 147 | %add = add nsw i32 %1, %0 |
| 148 | br label %if.end |
| 149 | |
| 150 | if.end: |
| 151 | %n.addr.0 = phi i32 [ %n, %if.then ], [ %add, %if.else ] |
| 152 | tail call void @otherfn() |
| 153 | ret i32 %n.addr.0 |
| 154 | } |