| 1 | // RUN: %clang_cc1 %s -std=c++11 -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,NULL-INVALID |
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| 2 | // RUN: %clang_cc1 %s -std=c++11 -triple=x86_64-apple-darwin10 -fno-delete-null-pointer-checks -emit-llvm -o - | FileCheck %s -check-prefixes=CHECK,NULL-VALID |
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| 3 | |
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| 4 | // For a reference to a complete type, output the dereferenceable attribute (in |
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| 5 | // any address space). |
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| 6 | |
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| 7 | typedef int a __attribute__((address_space(1))); |
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| 8 | |
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| 9 | a & foo(a &x, a & y) { |
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| 10 | return x; |
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| 11 | } |
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| 12 | |
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| 13 | // CHECK: define dereferenceable(4) i32 addrspace(1)* @_Z3fooRU3AS1iS0_(i32 addrspace(1)* dereferenceable(4) %x, i32 addrspace(1)* dereferenceable(4) %y) |
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| 14 | |
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| 15 | // For a reference to an incomplete type in an alternate address space, output |
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| 16 | // neither dereferenceable nor nonnull. |
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| 17 | |
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| 18 | class bc; |
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| 19 | typedef bc b __attribute__((address_space(1))); |
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| 20 | |
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| 21 | b & bar(b &x, b & y) { |
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| 22 | return x; |
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| 23 | } |
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| 24 | |
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| 25 | // CHECK: define %class.bc addrspace(1)* @_Z3barRU3AS12bcS1_(%class.bc addrspace(1)* %x, %class.bc addrspace(1)* %y) |
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| 26 | |
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| 27 | // For a reference to an incomplete type in addrspace(0), output nonnull. |
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| 28 | |
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| 29 | bc & bar2(bc &x, bc & y) { |
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| 30 | return x; |
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| 31 | } |
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| 32 | |
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| 33 | // NULL-INVALID: define nonnull %class.bc* @_Z4bar2R2bcS0_(%class.bc* nonnull %x, %class.bc* nonnull %y) |
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| 34 | // NULL-VALID: define %class.bc* @_Z4bar2R2bcS0_(%class.bc* %x, %class.bc* %y) |
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| 35 | |
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| 36 | |
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| 37 | |
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