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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.
83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
// RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-apple-darwin10 -mconstructor-aliases | FileCheck %s
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struct A {
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A();
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};
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// CHECK: @_ZN1AC1Ev ={{.*}} unnamed_addr alias {{.*}} @_ZN1AC2Ev
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// CHECK-LABEL: define{{.*}} void @_ZN1AC2Ev(%struct.A* {{[^,]*}} %this) unnamed_addr
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A::A() { }
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struct B : virtual A {
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B();
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};
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// CHECK-LABEL: define{{.*}} void @_ZN1BC2Ev(%struct.B* {{[^,]*}} %this, i8** %vtt) unnamed_addr
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// CHECK-LABEL: define{{.*}} void @_ZN1BC1Ev(%struct.B* {{[^,]*}} %this) unnamed_addr
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B::B() { }
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struct C : virtual A {
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C(bool);
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};
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// CHECK-LABEL: define{{.*}} void @_ZN1CC2Eb(%struct.C* {{[^,]*}} %this, i8** %vtt, i1 zeroext %0) unnamed_addr
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// CHECK-LABEL: define{{.*}} void @_ZN1CC1Eb(%struct.C* {{[^,]*}} %this, i1 zeroext %0) unnamed_addr
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C::C(bool) { }
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// PR6251
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namespace PR6251 {
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// Test that we don't call the A<char> constructor twice.
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template<typename T>
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struct A { A(); };
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struct B : virtual A<char> { };
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struct C : virtual A<char> { };
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struct D : B, C {
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D();
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};
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// CHECK-LABEL: define{{.*}} void @_ZN6PR62511DC1Ev(%"struct.PR6251::D"* {{[^,]*}} %this) unnamed_addr
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// CHECK: call void @_ZN6PR62511AIcEC2Ev
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// CHECK-NOT: call void @_ZN6PR62511AIcEC2Ev
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// CHECK: ret void
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D::D() { }
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}
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namespace virtualBaseAlignment {
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// Check that the store to B::x in the base constructor has an 8-byte alignment.
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// CHECK: define linkonce_odr void @_ZN20virtualBaseAlignment1BC1Ev(%[[STRUCT_B:.*]]* {{[^,]*}} %[[THIS:.*]])
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// CHECK: %[[THIS_ADDR:.*]] = alloca %[[STRUCT_B]]*, align 8
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// CHECK: store %[[STRUCT_B]]* %[[THIS]], %[[STRUCT_B]]** %[[THIS_ADDR]], align 8
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// CHECK: %[[THIS1:.*]] = load %[[STRUCT_B]]*, %[[STRUCT_B]]** %[[THIS_ADDR]], align 8
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// CHECK: %[[X:.*]] = getelementptr inbounds %[[STRUCT_B]], %[[STRUCT_B]]* %[[THIS1]], i32 0, i32 2
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// CHECK: store i32 123, i32* %[[X]], align 16
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// CHECK: define linkonce_odr void @_ZN20virtualBaseAlignment1BC2Ev(%[[STRUCT_B]]* {{[^,]*}} %[[THIS:.*]], i8** %{{.*}})
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// CHECK: %[[THIS_ADDR:.*]] = alloca %[[STRUCT_B]]*, align 8
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// CHECK: store %[[STRUCT_B]]* %[[THIS]], %[[STRUCT_B]]** %[[THIS_ADDR]], align 8
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// CHECK: %[[THIS1:.*]] = load %[[STRUCT_B]]*, %[[STRUCT_B]]** %[[THIS_ADDR]], align 8
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// CHECK: %[[X:.*]] = getelementptr inbounds %[[STRUCT_B]], %[[STRUCT_B]]* %[[THIS1]], i32 0, i32 2
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// CHECK: store i32 123, i32* %[[X]], align 8
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struct A {
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__attribute__((aligned(16))) double data1;
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};
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struct B : public virtual A {
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B() : x(123) {}
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double a;
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int x;
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};
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struct C : public virtual B {};
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void test() { B b; C c; }
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}
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