1 // RUN: %clang_cc1 -no-opaque-pointers %s -std=c++11 -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,NULL-INVALID 2 // RUN: %clang_cc1 -no-opaque-pointers %s -std=c++11 -triple=x86_64-apple-darwin10 -fno-delete-null-pointer-checks -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,NULL-VALID 3 4 // For a reference to a complete type, output the dereferenceable attribute (in 5 // any address space). 6 7 typedef int a __attribute__((address_space(1))); 8 9 a & foo(a &x, a & y) { 10 return x; 11 } 12 13 // CHECK: define{{.*}} align 4 dereferenceable(4) i32 addrspace(1)* @_Z3fooRU3AS1iS0_(i32 addrspace(1)* noundef align 4 dereferenceable(4) %x, i32 addrspace(1)* noundef align 4 dereferenceable(4) %y) 14 15 // For a reference to an incomplete type in an alternate address space, output 16 // neither dereferenceable nor nonnull. 17 18 class bc; 19 typedef bc b __attribute__((address_space(1))); 20 21 b & bar(b &x, b & y) { 22 return x; 23 } 24 25 // CHECK: define{{.*}} align 1 %class.bc addrspace(1)* @_Z3barRU3AS12bcS1_(%class.bc addrspace(1)* noundef align 1 %x, %class.bc addrspace(1)* noundef align 1 %y) 26 27 // For a reference to an incomplete type in addrspace(0), output nonnull. 28 29 bc & bar2(bc &x, bc & y) { 30 return x; 31 } 32 33 // NULL-INVALID: define{{.*}} nonnull align 1 %class.bc* @_Z4bar2R2bcS0_(%class.bc* noundef nonnull align 1 %x, %class.bc* noundef nonnull align 1 %y) 34 // NULL-VALID: define{{.*}} align 1 %class.bc* @_Z4bar2R2bcS0_(%class.bc* noundef align 1 %x, %class.bc* noundef align 1 %y) 35 36 37