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789a46f2d7
Summary: Clang -fpic defaults to -fno-semantic-interposition (GCC -fpic defaults to -fsemantic-interposition). Users need to specify -fsemantic-interposition to get semantic interposition behavior. Semantic interposition is currently a best-effort feature. There may still be some cases where it is not handled well. Reviewers: peter.smith, rnk, serge-sans-paille, sfertile, jfb, jdoerfert Subscribers: dschuff, jyknight, dylanmckay, nemanjai, jvesely, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, arphaman, PkmX, jocewei, jsji, Jim, lenary, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D73865
27 lines
1.1 KiB
C++
27 lines
1.1 KiB
C++
// RUN: %clang_cc1 -triple x86_64-windows-gnu -o - -emit-llvm %s | FileCheck %s -check-prefix CHECK-WIN
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -o - -emit-llvm %s | FileCheck %s -check-prefix CHECK-LIN
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typedef __PTRDIFF_TYPE__ ptrdiff_t;
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template <typename FTy> ptrdiff_t func_as_int(FTy *fp) { return ptrdiff_t(fp); }
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int f_plain(int);
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int __attribute__((sysv_abi)) f_sysvabi(int);
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int __attribute__((ms_abi)) f_msabi(int);
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ptrdiff_t useThem() {
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ptrdiff_t rv = 0;
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rv += func_as_int(f_plain);
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rv += func_as_int(f_sysvabi);
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rv += func_as_int(f_msabi);
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return rv;
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}
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// CHECK-WIN: define dso_local i64 @_Z7useThemv()
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// CHECK-WIN: call i64 @_Z11func_as_intIFiiEExPT_(i32 (i32)* @_Z7f_plaini)
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// CHECK-WIN: call i64 @_Z11func_as_intIU8sysv_abiFiiEExPT_(i32 (i32)* @_Z9f_sysvabii)
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// CHECK-WIN: call i64 @_Z11func_as_intIFiiEExPT_(i32 (i32)* @_Z7f_msabii)
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// CHECK-LIN: define dso_local i64 @_Z7useThemv()
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// CHECK-LIN: call i64 @_Z11func_as_intIFiiEElPT_(i32 (i32)* @_Z7f_plaini)
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// CHECK-LIN: call i64 @_Z11func_as_intIFiiEElPT_(i32 (i32)* @_Z9f_sysvabii)
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// CHECK-LIN: call i64 @_Z11func_as_intIU6ms_abiFiiEElPT_(i32 (i32)* @_Z7f_msabii)
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