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[SCCP] Add tests for non-null pointers (NFC)
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| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 | ||
| ; RUN: opt -S -passes=sccp < %s | FileCheck %s | ||
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| define i1 @test_no_attr(ptr %p) { | ||
| ; CHECK-LABEL: define i1 @test_no_attr( | ||
| ; CHECK-SAME: ptr [[P:%.*]]) { | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[P]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %cmp = icmp ne ptr %p, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_nonnull(ptr nonnull %p) { | ||
| ; CHECK-LABEL: define i1 @test_nonnull( | ||
| ; CHECK-SAME: ptr nonnull [[P:%.*]]) { | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[P]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %cmp = icmp ne ptr %p, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_nonnull_eq(ptr nonnull %p) { | ||
| ; CHECK-LABEL: define i1 @test_nonnull_eq( | ||
| ; CHECK-SAME: ptr nonnull [[P:%.*]]) { | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %cmp = icmp eq ptr %p, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_dereferenceable(ptr dereferenceable(4) %p) { | ||
| ; CHECK-LABEL: define i1 @test_dereferenceable( | ||
| ; CHECK-SAME: ptr dereferenceable(4) [[P:%.*]]) { | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[P]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %cmp = icmp ne ptr %p, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_gep_no_flags(ptr nonnull %p, i64 %x) { | ||
| ; CHECK-LABEL: define i1 @test_gep_no_flags( | ||
| ; CHECK-SAME: ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { | ||
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[P]], i64 [[X]] | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[GEP]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %gep = getelementptr i8, ptr %p, i64 %x | ||
| %cmp = icmp ne ptr %gep, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_gep_nuw(ptr nonnull %p, i64 %x) { | ||
| ; CHECK-LABEL: define i1 @test_gep_nuw( | ||
| ; CHECK-SAME: ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { | ||
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw i8, ptr [[P]], i64 [[X]] | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[GEP]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %gep = getelementptr nuw i8, ptr %p, i64 %x | ||
| %cmp = icmp ne ptr %gep, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_gep_inbounds(ptr nonnull %p, i64 %x) { | ||
| ; CHECK-LABEL: define i1 @test_gep_inbounds( | ||
| ; CHECK-SAME: ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { | ||
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 [[X]] | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[GEP]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %gep = getelementptr inbounds i8, ptr %p, i64 %x | ||
| %cmp = icmp ne ptr %gep, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_gep_inbounds_null_pointer_valid(ptr nonnull %p, i64 %x) null_pointer_is_valid { | ||
| ; CHECK-LABEL: define i1 @test_gep_inbounds_null_pointer_valid( | ||
| ; CHECK-SAME: ptr nonnull [[P:%.*]], i64 [[X:%.*]]) #[[ATTR0:[0-9]+]] { | ||
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i8, ptr [[P]], i64 [[X]] | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[GEP]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %gep = getelementptr inbounds i8, ptr %p, i64 %x | ||
| %cmp = icmp ne ptr %gep, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_select(i1 %c, ptr nonnull %p, i64 %x) { | ||
| ; CHECK-LABEL: define i1 @test_select( | ||
| ; CHECK-SAME: i1 [[C:%.*]], ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { | ||
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw i8, ptr [[P]], i64 [[X]] | ||
| ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C]], ptr [[P]], ptr [[GEP]] | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[SEL]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %gep = getelementptr nuw i8, ptr %p, i64 %x | ||
| %sel = select i1 %c, ptr %p, ptr %gep | ||
| %cmp = icmp ne ptr %sel, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_select_not_nuw(i1 %c, ptr nonnull %p, i64 %x) { | ||
| ; CHECK-LABEL: define i1 @test_select_not_nuw( | ||
| ; CHECK-SAME: i1 [[C:%.*]], ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { | ||
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[P]], i64 [[X]] | ||
| ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[C]], ptr [[P]], ptr [[GEP]] | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[SEL]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| %gep = getelementptr i8, ptr %p, i64 %x | ||
| %sel = select i1 %c, ptr %p, ptr %gep | ||
| %cmp = icmp ne ptr %sel, null | ||
| ret i1 %cmp | ||
| } | ||
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| define i1 @test_phi(i1 %c, ptr nonnull %p, i64 %x) { | ||
| ; CHECK-LABEL: define i1 @test_phi( | ||
| ; CHECK-SAME: i1 [[C:%.*]], ptr nonnull [[P:%.*]], i64 [[X:%.*]]) { | ||
| ; CHECK-NEXT: [[ENTRY:.*]]: | ||
| ; CHECK-NEXT: br i1 [[C]], label %[[IF:.*]], label %[[JOIN:.*]] | ||
| ; CHECK: [[IF]]: | ||
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr nuw i8, ptr [[P]], i64 [[X]] | ||
| ; CHECK-NEXT: br label %[[JOIN]] | ||
| ; CHECK: [[JOIN]]: | ||
| ; CHECK-NEXT: [[PHI:%.*]] = phi ptr [ [[P]], %[[ENTRY]] ], [ [[GEP]], %[[IF]] ] | ||
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ne ptr [[PHI]], null | ||
| ; CHECK-NEXT: ret i1 [[CMP]] | ||
| ; | ||
| entry: | ||
| br i1 %c, label %if, label %join | ||
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| if: | ||
| %gep = getelementptr nuw i8, ptr %p, i64 %x | ||
| br label %join | ||
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| join: | ||
| %phi = phi ptr [ %p, %entry ], [ %gep, %if ] | ||
| %cmp = icmp ne ptr %phi, null | ||
| ret i1 %cmp | ||
| } |