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fd739804e0
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.
To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.
To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
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{{.*}} 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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