6b3351792c
For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
34 lines
942 B
C++
34 lines
942 B
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm %s -o - | FileCheck %s
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// rdar://20636558
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#pragma GCC diagnostic ignored "-Wincompatible-ms-struct"
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#define ATTR __attribute__((__ms_struct__))
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struct ATTR VBase {
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virtual void foo() = 0;
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};
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struct ATTR Base : virtual VBase {
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virtual void bar() = 0;
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};
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struct ATTR Derived : Base {
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Derived();
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void foo();
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void bar();
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int value;
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};
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// CHECK: [[DERIVED:%.*]] = type <{ [[BASE:%.*]], i32, [4 x i8] }>
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// CHECK: [[BASE]] = type { [[VBASE:%.*]] }
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// CHECK: [[VBASE]] = type { i32 (...)** }
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// CHECK: define{{.*}} void @_ZN7DerivedC2Ev
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// CHECK: [[SELF:%.*]] = load [[DERIVED]]*
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// CHECK: [[T0:%.*]] = bitcast [[DERIVED]]* [[SELF]] to [[BASE]]*
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// CHECK: call void @_ZN4BaseC2Ev([[BASE]]* {{[^,]*}} [[T0]], i8**
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// CHECK: [[T0:%.*]] = getelementptr inbounds {{.*}} [[SELF]], i32 0, i32 1
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// CHECK: store i32 20, i32* [[T0]],
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Derived::Derived() : value(20) {}
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