e0ac46e69d
This reverts commit d618f1c3b12effd0c2bdb7d02108d3551f389d3d. This commit wasn't reviewed ahead of time and significant concerns were raised immediately after it landed. According to our developer policy this warrants immediate revert of the commit. https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy Differential Revision: https://reviews.llvm.org/D155509
295 lines
8.7 KiB
C++
295 lines
8.7 KiB
C++
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-unknown-unknown | FileCheck -check-prefix CODE-LP64 %s
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// RUN: %clang_cc1 %s -emit-llvm -o - -triple=i386-unknown-unknown | FileCheck -check-prefix CODE-LP32 %s
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// RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-unknown-unknown | FileCheck -check-prefix GLOBAL-LP64 %s
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// RUN: %clang_cc1 %s -emit-llvm -o - -triple=i386-unknown-unknown | FileCheck -check-prefix GLOBAL-LP32 %s
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// RUN: %clang_cc1 %s -emit-llvm -o - -triple=armv7-unknown-unknown | FileCheck -check-prefix GLOBAL-ARM %s
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// MIPS uses the same representation of method pointers as ARM.
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// RUN: %clang_cc1 %s -emit-llvm -o - -triple=mips-unknown-linux-gnu | FileCheck -check-prefix GLOBAL-ARM %s
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// WebAssembly uses the same representation of method pointers as ARM.
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// RUN: %clang_cc1 %s -emit-llvm -o - -triple=wasm32-unknown-unknown | FileCheck -check-prefix GLOBAL-ARM %s
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struct A { int a; void f(); virtual void vf1(); virtual void vf2(); };
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struct B { int b; virtual void g(); };
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struct C : B, A { };
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void (A::*pa)();
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void (A::*volatile vpa)();
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void (B::*pb)();
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void (C::*pc)();
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// GLOBAL-LP64: @pa2 ={{.*}} global { i64, i64 } { i64 ptrtoint (ptr @_ZN1A1fEv to i64), i64 0 }, align 8
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void (A::*pa2)() = &A::f;
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// GLOBAL-LP64: @pa3 ={{.*}} global { i64, i64 } { i64 1, i64 0 }, align 8
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// GLOBAL-LP32: @pa3 ={{.*}} global { i32, i32 } { i32 1, i32 0 }, align 4
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void (A::*pa3)() = &A::vf1;
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// GLOBAL-LP64: @pa4 ={{.*}} global { i64, i64 } { i64 9, i64 0 }, align 8
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// GLOBAL-LP32: @pa4 ={{.*}} global { i32, i32 } { i32 5, i32 0 }, align 4
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void (A::*pa4)() = &A::vf2;
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// GLOBAL-LP64: @pc2 ={{.*}} global { i64, i64 } { i64 ptrtoint (ptr @_ZN1A1fEv to i64), i64 16 }, align 8
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void (C::*pc2)() = &C::f;
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// GLOBAL-LP64: @pc3 ={{.*}} global { i64, i64 } { i64 1, i64 0 }, align 8
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void (A::*pc3)() = &A::vf1;
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void f() {
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// CODE-LP64: store { i64, i64 } zeroinitializer, ptr @pa
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pa = 0;
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// Is this okay? What are LLVM's volatile semantics for structs?
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// CODE-LP64: store volatile { i64, i64 } zeroinitializer, ptr @vpa
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vpa = 0;
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// CODE-LP64: [[TMP:%.*]] = load { i64, i64 }, ptr @pa, align 8
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// CODE-LP64: [[TMPADJ:%.*]] = extractvalue { i64, i64 } [[TMP]], 1
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// CODE-LP64: [[ADJ:%.*]] = add nsw i64 [[TMPADJ]], 16
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// CODE-LP64: [[RES:%.*]] = insertvalue { i64, i64 } [[TMP]], i64 [[ADJ]], 1
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// CODE-LP64: store { i64, i64 } [[RES]], ptr @pc, align 8
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pc = pa;
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// CODE-LP64: [[TMP:%.*]] = load { i64, i64 }, ptr @pc, align 8
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// CODE-LP64: [[TMPADJ:%.*]] = extractvalue { i64, i64 } [[TMP]], 1
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// CODE-LP64: [[ADJ:%.*]] = sub nsw i64 [[TMPADJ]], 16
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// CODE-LP64: [[RES:%.*]] = insertvalue { i64, i64 } [[TMP]], i64 [[ADJ]], 1
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// CODE-LP64: store { i64, i64 } [[RES]], ptr @pa, align 8
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pa = static_cast<void (A::*)()>(pc);
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}
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void f2() {
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// CODE-LP64: store { i64, i64 } { i64 ptrtoint (ptr @_ZN1A1fEv to i64), i64 0 }
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void (A::*pa2)() = &A::f;
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// CODE-LP64: store { i64, i64 } { i64 1, i64 0 }
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// CODE-LP32: store { i32, i32 } { i32 1, i32 0 }
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void (A::*pa3)() = &A::vf1;
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// CODE-LP64: store { i64, i64 } { i64 9, i64 0 }
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// CODE-LP32: store { i32, i32 } { i32 5, i32 0 }
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void (A::*pa4)() = &A::vf2;
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}
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void f3(A *a, A &ar) {
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(a->*pa)();
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(ar.*pa)();
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}
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bool f4() {
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return pa;
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}
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// PR5177
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namespace PR5177 {
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struct A {
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bool foo(int*) const;
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} a;
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struct B1 {
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bool (A::*pmf)(int*) const;
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const A* pa;
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B1() : pmf(&A::foo), pa(&a) {}
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bool operator()() const { return (pa->*pmf)(new int); }
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};
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void bar(B1 b2) { while (b2()) ; }
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}
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// PR5138
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namespace PR5138 {
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struct foo {
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virtual void bar(foo *);
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};
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extern "C" {
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void baz(foo *);
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}
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void (foo::*ptr1)(void *) = (void (foo::*)(void *))&foo::bar;
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void (*ptr2)(void *) = (void (*)(void *))&baz;
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void (foo::*ptr3)(void) = (void (foo::*)(void))&foo::bar;
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}
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// PR5593
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namespace PR5593 {
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struct A { };
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bool f(void (A::*f)()) {
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return f && f;
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}
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}
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namespace PR5718 {
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struct A { };
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bool f(void (A::*f)(), void (A::*g)()) {
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return f == g;
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}
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}
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namespace BoolMemberPointer {
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struct A { };
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bool f(void (A::*f)()) {
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return !f;
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}
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bool g(void (A::*f)()) {
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if (!!f)
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return true;
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return false;
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}
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}
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// PR5940
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namespace PR5940 {
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class foo {
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public:
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virtual void baz(void);
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};
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void foo::baz(void) {
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void (foo::*ptr)(void) = &foo::baz;
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}
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}
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namespace MemberPointerImpCast {
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struct A {
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int x;
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};
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struct B : public A {
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};
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void f(B* obj, void (A::*method)()) {
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(obj->*method)();
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}
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}
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// PR6258
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namespace PR6258 {
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struct A {
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void f(bool);
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};
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void (A::*pf)(bool) = &A::f;
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void f() {
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void (A::*pf)(bool) = &A::f;
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}
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}
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// PR7027
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namespace PR7027 {
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struct X { void test( ); };
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void testX() { &X::test; }
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}
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namespace test7 {
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struct A { void foo(); virtual void vfoo(); };
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struct B { void foo(); virtual void vfoo(); };
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struct C : A, B { void foo(); virtual void vfoo(); };
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// GLOBAL-ARM: @_ZN5test74ptr0E ={{.*}} global {{.*}} { i32 ptrtoint (ptr @_ZN5test71A3fooEv to i32), i32 0 }
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// GLOBAL-ARM: @_ZN5test74ptr1E ={{.*}} global {{.*}} { i32 ptrtoint (ptr @_ZN5test71B3fooEv to i32), i32 8 }
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// GLOBAL-ARM: @_ZN5test74ptr2E ={{.*}} global {{.*}} { i32 ptrtoint (ptr @_ZN5test71C3fooEv to i32), i32 0 }
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// GLOBAL-ARM: @_ZN5test74ptr3E ={{.*}} global {{.*}} { i32 0, i32 1 }
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// GLOBAL-ARM: @_ZN5test74ptr4E ={{.*}} global {{.*}} { i32 0, i32 9 }
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// GLOBAL-ARM: @_ZN5test74ptr5E ={{.*}} global {{.*}} { i32 0, i32 1 }
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void (C::*ptr0)() = &A::foo;
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void (C::*ptr1)() = &B::foo;
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void (C::*ptr2)() = &C::foo;
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void (C::*ptr3)() = &A::vfoo;
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void (C::*ptr4)() = &B::vfoo;
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void (C::*ptr5)() = &C::vfoo;
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}
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namespace test8 {
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struct X { };
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typedef int (X::*pmf)(int);
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// CHECK: {{define.*_ZN5test81fEv}}
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pmf f() {
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// CHECK: {{ret.*zeroinitializer}}
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return pmf();
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}
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}
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namespace test9 {
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struct A {
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void foo();
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};
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struct B : A {
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void foo();
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};
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typedef void (A::*fooptr)();
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struct S {
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fooptr p;
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};
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// CODE-LP64-LABEL: define{{.*}} void @_ZN5test94testEv(
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// CODE-LP64: alloca i32
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// CODE-LP64-NEXT: ret void
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void test() {
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int x;
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static S array[] = { (fooptr) &B::foo };
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}
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}
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// rdar://problem/10815683 - Verify that we can emit reinterprets of
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// member pointers as constant initializers. For added trickiness,
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// we also add some non-trivial adjustments.
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namespace test10 {
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struct A {
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int nonEmpty;
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void foo();
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};
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struct B : public A {
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virtual void requireNonZeroAdjustment();
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};
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struct C {
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int nonEmpty;
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};
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struct D : public C {
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virtual void requireNonZeroAdjustment();
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};
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// It's not that the offsets are doubled on ARM, it's that they're left-shifted by 1.
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// GLOBAL-LP64: @_ZN6test101aE ={{.*}} global { i64, i64 } { i64 ptrtoint (ptr @_ZN6test101A3fooEv to i64), i64 0 }, align 8
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// GLOBAL-LP32: @_ZN6test101aE ={{.*}} global { i32, i32 } { i32 ptrtoint (ptr @_ZN6test101A3fooEv to i32), i32 0 }, align 4
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// GLOBAL-ARM: @_ZN6test101aE ={{.*}} global { i32, i32 } { i32 ptrtoint (ptr @_ZN6test101A3fooEv to i32), i32 0 }, align 4
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void (A::*a)() = &A::foo;
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// GLOBAL-LP64: @_ZN6test101bE ={{.*}} global { i64, i64 } { i64 ptrtoint (ptr @_ZN6test101A3fooEv to i64), i64 8 }, align 8
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// GLOBAL-LP32: @_ZN6test101bE ={{.*}} global { i32, i32 } { i32 ptrtoint (ptr @_ZN6test101A3fooEv to i32), i32 4 }, align 4
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// GLOBAL-ARM: @_ZN6test101bE ={{.*}} global { i32, i32 } { i32 ptrtoint (ptr @_ZN6test101A3fooEv to i32), i32 8 }, align 4
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void (B::*b)() = (void (B::*)()) &A::foo;
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// GLOBAL-LP64: @_ZN6test101cE ={{.*}} global { i64, i64 } { i64 ptrtoint (ptr @_ZN6test101A3fooEv to i64), i64 8 }, align 8
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// GLOBAL-LP32: @_ZN6test101cE ={{.*}} global { i32, i32 } { i32 ptrtoint (ptr @_ZN6test101A3fooEv to i32), i32 4 }, align 4
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// GLOBAL-ARM: @_ZN6test101cE ={{.*}} global { i32, i32 } { i32 ptrtoint (ptr @_ZN6test101A3fooEv to i32), i32 8 }, align 4
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void (C::*c)() = (void (C::*)()) (void (B::*)()) &A::foo;
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// GLOBAL-LP64: @_ZN6test101dE ={{.*}} global { i64, i64 } { i64 ptrtoint (ptr @_ZN6test101A3fooEv to i64), i64 16 }, align 8
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// GLOBAL-LP32: @_ZN6test101dE ={{.*}} global { i32, i32 } { i32 ptrtoint (ptr @_ZN6test101A3fooEv to i32), i32 8 }, align 4
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// GLOBAL-ARM: @_ZN6test101dE ={{.*}} global { i32, i32 } { i32 ptrtoint (ptr @_ZN6test101A3fooEv to i32), i32 16 }, align 4
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void (D::*d)() = (void (C::*)()) (void (B::*)()) &A::foo;
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}
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namespace test11 {
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struct A { virtual void a(); };
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struct B : A {};
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struct C : B { virtual void a(); };
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void (C::*x)() = &C::a;
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// GLOBAL-LP64: @_ZN6test111xE ={{.*}} global { i64, i64 } { i64 1, i64 0 }
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// GLOBAL-LP32: @_ZN6test111xE ={{.*}} global { i32, i32 } { i32 1, i32 0 }
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// GLOBAL-ARM: @_ZN6test111xE ={{.*}} global { i32, i32 } { i32 0, i32 1 }
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}
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