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| 1 | +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 |
| 2 | +; RUN: opt -S -passes=sccp < %s | FileCheck %s |
| 3 | + |
| 4 | +define i1 @test_no_attr(ptr %p) { |
| 5 | +; CHECK-LABEL: define i1 @test_no_attr( |
| 6 | +; CHECK-SAME: ptr [[P:%.*]]) { |
| 7 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[P]], null |
| 8 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 9 | +; |
| 10 | + %cmp = icmp ne ptr %p, null |
| 11 | + ret i1 %cmp |
| 12 | +} |
| 13 | + |
| 14 | +define i1 @test_nonnull(ptr nonnull %p) { |
| 15 | +; CHECK-LABEL: define i1 @test_nonnull( |
| 16 | +; CHECK-SAME: ptr nonnull [[P:%.*]]) { |
| 17 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[P]], null |
| 18 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 19 | +; |
| 20 | + %cmp = icmp ne ptr %p, null |
| 21 | + ret i1 %cmp |
| 22 | +} |
| 23 | + |
| 24 | +define i1 @test_nonnull_eq(ptr nonnull %p) { |
| 25 | +; CHECK-LABEL: define i1 @test_nonnull_eq( |
| 26 | +; CHECK-SAME: ptr nonnull [[P:%.*]]) { |
| 27 | +; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P]], null |
| 28 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 29 | +; |
| 30 | + %cmp = icmp eq ptr %p, null |
| 31 | + ret i1 %cmp |
| 32 | +} |
| 33 | + |
| 34 | +define i1 @test_dereferenceable(ptr dereferenceable(4) %p) { |
| 35 | +; CHECK-LABEL: define i1 @test_dereferenceable( |
| 36 | +; CHECK-SAME: ptr dereferenceable(4) [[P:%.*]]) { |
| 37 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[P]], null |
| 38 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 39 | +; |
| 40 | + %cmp = icmp ne ptr %p, null |
| 41 | + ret i1 %cmp |
| 42 | +} |
| 43 | + |
| 44 | +define i1 @test_gep_no_flags(ptr nonnull %p, i64 %x) { |
| 45 | +; CHECK-LABEL: define i1 @test_gep_no_flags( |
| 46 | +; CHECK-SAME: ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { |
| 47 | +; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[P]], i64 [[X]] |
| 48 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[GEP]], null |
| 49 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 50 | +; |
| 51 | + %gep = getelementptr i8, ptr %p, i64 %x |
| 52 | + %cmp = icmp ne ptr %gep, null |
| 53 | + ret i1 %cmp |
| 54 | +} |
| 55 | + |
| 56 | +define i1 @test_gep_nuw(ptr nonnull %p, i64 %x) { |
| 57 | +; CHECK-LABEL: define i1 @test_gep_nuw( |
| 58 | +; CHECK-SAME: ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { |
| 59 | +; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw i8, ptr [[P]], i64 [[X]] |
| 60 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[GEP]], null |
| 61 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 62 | +; |
| 63 | + %gep = getelementptr nuw i8, ptr %p, i64 %x |
| 64 | + %cmp = icmp ne ptr %gep, null |
| 65 | + ret i1 %cmp |
| 66 | +} |
| 67 | + |
| 68 | +define i1 @test_gep_inbounds(ptr nonnull %p, i64 %x) { |
| 69 | +; CHECK-LABEL: define i1 @test_gep_inbounds( |
| 70 | +; CHECK-SAME: ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { |
| 71 | +; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 [[X]] |
| 72 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[GEP]], null |
| 73 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 74 | +; |
| 75 | + %gep = getelementptr inbounds i8, ptr %p, i64 %x |
| 76 | + %cmp = icmp ne ptr %gep, null |
| 77 | + ret i1 %cmp |
| 78 | +} |
| 79 | + |
| 80 | +define i1 @test_gep_inbounds_null_pointer_valid(ptr nonnull %p, i64 %x) null_pointer_is_valid { |
| 81 | +; CHECK-LABEL: define i1 @test_gep_inbounds_null_pointer_valid( |
| 82 | +; CHECK-SAME: ptr nonnull [[P:%.*]], i64 [[X:%.*]]) #[[ATTR0:[0-9]+]] { |
| 83 | +; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 [[X]] |
| 84 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[GEP]], null |
| 85 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 86 | +; |
| 87 | + %gep = getelementptr inbounds i8, ptr %p, i64 %x |
| 88 | + %cmp = icmp ne ptr %gep, null |
| 89 | + ret i1 %cmp |
| 90 | +} |
| 91 | + |
| 92 | +define i1 @test_select(i1 %c, ptr nonnull %p, i64 %x) { |
| 93 | +; CHECK-LABEL: define i1 @test_select( |
| 94 | +; CHECK-SAME: i1 [[C:%.*]], ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { |
| 95 | +; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw i8, ptr [[P]], i64 [[X]] |
| 96 | +; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C]], ptr [[P]], ptr [[GEP]] |
| 97 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[SEL]], null |
| 98 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 99 | +; |
| 100 | + %gep = getelementptr nuw i8, ptr %p, i64 %x |
| 101 | + %sel = select i1 %c, ptr %p, ptr %gep |
| 102 | + %cmp = icmp ne ptr %sel, null |
| 103 | + ret i1 %cmp |
| 104 | +} |
| 105 | + |
| 106 | +define i1 @test_select_not_nuw(i1 %c, ptr nonnull %p, i64 %x) { |
| 107 | +; CHECK-LABEL: define i1 @test_select_not_nuw( |
| 108 | +; CHECK-SAME: i1 [[C:%.*]], ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { |
| 109 | +; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[P]], i64 [[X]] |
| 110 | +; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C]], ptr [[P]], ptr [[GEP]] |
| 111 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[SEL]], null |
| 112 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 113 | +; |
| 114 | + %gep = getelementptr i8, ptr %p, i64 %x |
| 115 | + %sel = select i1 %c, ptr %p, ptr %gep |
| 116 | + %cmp = icmp ne ptr %sel, null |
| 117 | + ret i1 %cmp |
| 118 | +} |
| 119 | + |
| 120 | +define i1 @test_phi(i1 %c, ptr nonnull %p, i64 %x) { |
| 121 | +; CHECK-LABEL: define i1 @test_phi( |
| 122 | +; CHECK-SAME: i1 [[C:%.*]], ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { |
| 123 | +; CHECK-NEXT: [[ENTRY:.*]]: |
| 124 | +; CHECK-NEXT: br i1 [[C]], label %[[IF:.*]], label %[[JOIN:.*]] |
| 125 | +; CHECK: [[IF]]: |
| 126 | +; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw i8, ptr [[P]], i64 [[X]] |
| 127 | +; CHECK-NEXT: br label %[[JOIN]] |
| 128 | +; CHECK: [[JOIN]]: |
| 129 | +; CHECK-NEXT: [[PHI:%.*]] = phi ptr [ [[P]], %[[ENTRY]] ], [ [[GEP]], %[[IF]] ] |
| 130 | +; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[PHI]], null |
| 131 | +; CHECK-NEXT: ret i1 [[CMP]] |
| 132 | +; |
| 133 | +entry: |
| 134 | + br i1 %c, label %if, label %join |
| 135 | + |
| 136 | +if: |
| 137 | + %gep = getelementptr nuw i8, ptr %p, i64 %x |
| 138 | + br label %join |
| 139 | + |
| 140 | +join: |
| 141 | + %phi = phi ptr [ %p, %entry ], [ %gep, %if ] |
| 142 | + %cmp = icmp ne ptr %phi, null |
| 143 | + ret i1 %cmp |
| 144 | +} |
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