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// RUN: %clang_cc1 -no-opaque-pointers -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s
// RUN: %clang_cc1 -no-opaque-pointers -fsanitize=alignment -fno-sanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-NORECOVER,CHECK-SANITIZE-UNREACHABLE
// RUN: %clang_cc1 -no-opaque-pointers -fsanitize=alignment -fsanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-RECOVER
// RUN: %clang_cc1 -no-opaque-pointers -fsanitize=alignment -fsanitize-trap=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-TRAP,CHECK-SANITIZE-UNREACHABLE
// CHECK-SANITIZE-ANYRECOVER: @[[CHAR:.*]] = {{.*}} c"'B *'\00" }
// CHECK-SANITIZE-ANYRECOVER: @[[LINE_100_ALIGNMENT_ASSUMPTION:.*]] = {{.*}}, i32 100, i32 35 }, {{.*}}* @[[CHAR]] }
struct A { int n; };
struct B { int n; };
struct C : A, B {};
void *f(C *c) {
// CHECK: define {{.*}} i8* @{{.*}}(%struct.C* noundef %[[C:.*]]) {{.*}} {
// CHECK-NEXT: [[ENTRY:.*]]:
// CHECK-NEXT: %[[C_ADDR:.*]] = alloca %struct.C*
// CHECK-NEXT: store %struct.C* %[[C]], %struct.C** %[[C_ADDR]]
// CHECK-NEXT: %[[C_RELOAD:.*]] = load %struct.C*, %struct.C** %[[C_ADDR]]
// CHECK-NEXT: %[[IS_NULL:.*]] = icmp eq %struct.C* %[[C_RELOAD]], null
// CHECK-NEXT: br i1 %[[IS_NULL]], label %[[CAST_END:[^,]+]], label %[[CAST_NOT_NULL:[^,]+]]
// CHECK: [[CAST_NOT_NULL]]:
// CHECK-NOSANITIZE-NEXT: %[[BITCAST:.*]] = bitcast %struct.C* %[[C_RELOAD]] to i8*
// CHECK-NOSANITIZE-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BITCAST]], i64 4
// CHECK-NOSANITIZE-NEXT: %[[BITCAST2:.*]] = bitcast i8* %[[ADD_PTR]] to %struct.B*
// CHECK-NOSANITIZE-NEXT: br label %[[CAST_END]]
// CHECK-SANITIZE-NEXT: %[[PTRTOINT:.*]] = ptrtoint %struct.C* %[[C_RELOAD]] to i64, !nosanitize
// CHECK-SANITIZE-NEXT: %[[MASKEDPTR:.*]] = and i64 %[[PTRTOINT]], 3, !nosanitize
// CHECK-SANITIZE-NEXT: %[[MASKCOND:.*]] = icmp eq i64 %[[MASKEDPTR]], 0, !nosanitize
// CHECK-SANITIZE-NEXT: br i1 %[[MASKCOND]], label %[[CONT:[^,]+]], label %[[HANDLER_TYPE_MISMATCH:[^,]+]]
// CHECK-SANITIZE: [[HANDLER_TYPE_MISMATCH]]:
// CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_type_mismatch_v1_abort(
// CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_type_mismatch_v1(
// CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(
// CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
// CHECK-SANITIZE: [[CONT]]:
// CHECK-SANITIZE-NEXT: %[[BITCAST:.*]] = bitcast %struct.C* %[[C_RELOAD]] to i8*
// CHECK-SANITIZE-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BITCAST]], i64 4
// CHECK-SANITIZE-NEXT: %[[BITCAST2:.*]] = bitcast i8* %[[ADD_PTR]] to %struct.B*
// CHECK-SANITIZE-NEXT: br label %[[CAST_END]]
// CHECK: [[CAST_END]]:
// CHECK-NOSANITIZE-NEXT: %[[CAST_RESULT:.*]] = phi %struct.B* [ %[[BITCAST2]], %[[CAST_NOT_NULL]] ], [ null, %[[ENTRY]] ]
// CHECK-NOSANITIZE-NEXT: %[[CAST_END_BITCAST:.*]] = bitcast %struct.B* %[[CAST_RESULT]] to i8*
// CHECK-NOSANITIZE-NEXT: call void @llvm.assume(i1 true) [ "align"(i8* %[[CAST_END_BITCAST]], i64 8) ]
// CHECK-NOSANITIZE-NEXT: ret i8* %[[CAST_END_BITCAST]]
// CHECK-NOSANITIZE-NEXT: }
// CHECK-SANITIZE-NEXT: %[[CAST_RESULT:.*]] = phi %struct.B* [ %[[BITCAST2]], %[[CONT]] ], [ null, %[[ENTRY]] ]
// CHECK-SANITIZE-NEXT: %[[CAST_END_BITCAST:.*]] = bitcast %struct.B* %[[CAST_RESULT]] to i8*
// CHECK-SANITIZE-NEXT: %[[PTRINT:.*]] = ptrtoint i8* %[[CAST_END_BITCAST]] to i64
// CHECK-SANITIZE-NEXT: %[[MASKEDPTR:.*]] = and i64 %[[PTRINT]], 7
// CHECK-SANITIZE-NEXT: %[[MASKCOND:.*]] = icmp eq i64 %[[MASKEDPTR]], 0
// CHECK-SANITIZE-NEXT: %[[PTRINT_DUP:.*]] = ptrtoint i8* %[[CAST_END_BITCAST]] to i64, !nosanitize
// CHECK-SANITIZE-NEXT: br i1 %[[MASKCOND]], label %[[CONT1:.*]], label %[[HANDLER_ALIGNMENT_ASSUMPTION:[^,]+]],{{.*}} !nosanitize
// CHECK-SANITIZE: [[HANDLER_ALIGNMENT_ASSUMPTION]]:
// CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_alignment_assumption_abort(i8* bitcast ({ {{{.*}}}, {{{.*}}}, {{{.*}}}* }* @[[LINE_100_ALIGNMENT_ASSUMPTION]] to i8*), i64 %[[PTRINT_DUP]], i64 8, i64 0){{.*}}, !nosanitize
// CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_alignment_assumption(i8* bitcast ({ {{{.*}}}, {{{.*}}}, {{{.*}}}* }* @[[LINE_100_ALIGNMENT_ASSUMPTION]] to i8*), i64 %[[PTRINT_DUP]], i64 8, i64 0){{.*}}, !nosanitize
// CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 23){{.*}}, !nosanitize
// CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
// CHECK-SANITIZE: [[CONT1]]:
// CHECK-SANITIZE-NEXT: call void @llvm.assume(i1 true) [ "align"(i8* %[[CAST_END_BITCAST]], i64 8) ]
// CHECK-SANITIZE-NEXT: ret i8* %[[CAST_END_BITCAST]]
// CHECK-SANITIZE-NEXT: }
#line 100
return __builtin_assume_aligned((B*)c, 8);
}
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