caio/clang-p2996
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
7a698519e8087f78e1ce719c37586ff94de97641
clang-p2996/clang/test/CodeGenCXX/partial-destruction.cpp
Bill Wendling f0724e8e06 Throw the switch to convert clang to the new exception handling model! 
This model uses the 'landingpad' instruction, which is pinned to the top of the
landing pad. (A landing pad is defined as the destination of the unwind branch
of an invoke instruction.) All of the information needed to generate the correct
exception handling metadata during code generation is encoded into the
landingpad instruction.

The new 'resume' instruction takes the place of the llvm.eh.resume intrinsic
call. It's lowered in much the same way as the intrinsic is.

llvm-svn: 140049
2011-09-19 20:31:14 +00:00

173 lines
7.4 KiB
C++
Raw Blame History

// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - -fcxx-exceptions -fexceptions | FileCheck %s
// Test IR generation for partial destruction of aggregates.
void opaque();
// Initializer lists.
namespace test0 {
struct A { A(int); A(); ~A(); void *v; };
void test() {
A as[10] = { 5, 7 };
opaque();
}
// CHECK: define void @_ZN5test04testEv()
// CHECK: [[AS:%.*]] = alloca [10 x [[A:%.*]]], align
// CHECK-NEXT: [[ENDVAR:%.*]] = alloca [[A]]*
// CHECK-NEXT: [[EXN:%.*]] = alloca i8*
// CHECK-NEXT: [[SEL:%.*]] = alloca i32
// Initialize.
// CHECK-NEXT: [[E_BEGIN:%.*]] = getelementptr inbounds [10 x [[A]]]* [[AS]], i64 0, i64 0
// CHECK-NEXT: store [[A]]* [[E_BEGIN]], [[A]]** [[ENDVAR]]
// CHECK-NEXT: invoke void @_ZN5test01AC1Ei([[A]]* [[E_BEGIN]], i32 5)
// CHECK: [[E1:%.*]] = getelementptr inbounds [[A]]* [[E_BEGIN]], i64 1
// CHECK-NEXT: store [[A]]* [[E1]], [[A]]** [[ENDVAR]]
// CHECK-NEXT: invoke void @_ZN5test01AC1Ei([[A]]* [[E1]], i32 7)
// CHECK: [[E2:%.*]] = getelementptr inbounds [[A]]* [[E1]], i64 1
// CHECK-NEXT: store [[A]]* [[E2]], [[A]]** [[ENDVAR]]
// CHECK-NEXT: [[E_END:%.*]] = getelementptr inbounds [[A]]* [[E_BEGIN]], i64 10
// CHECK-NEXT: br label
// CHECK: [[E_CUR:%.*]] = phi [[A]]* [ [[E2]], {{%.*}} ], [ [[E_NEXT:%.*]], {{%.*}} ]
// CHECK-NEXT: invoke void @_ZN5test01AC1Ev([[A]]* [[E_CUR]])
// CHECK: [[E_NEXT]] = getelementptr inbounds [[A]]* [[E_CUR]], i64 1
// CHECK-NEXT: store [[A]]* [[E_NEXT]], [[A]]** [[ENDVAR]]
// CHECK-NEXT: [[T0:%.*]] = icmp eq [[A]]* [[E_NEXT]], [[E_END]]
// CHECK-NEXT: br i1 [[T0]],
// Run.
// CHECK: invoke void @_Z6opaquev()
// Normal destroy.
// CHECK: [[ED_BEGIN:%.*]] = getelementptr inbounds [10 x [[A]]]* [[AS]], i32 0, i32 0
// CHECK-NEXT: [[ED_END:%.*]] = getelementptr inbounds [[A]]* [[ED_BEGIN]], i64 10
// CHECK-NEXT: br label
// CHECK: [[ED_AFTER:%.*]] = phi [[A]]* [ [[ED_END]], {{%.*}} ], [ [[ED_CUR:%.*]], {{%.*}} ]
// CHECK-NEXT: [[ED_CUR]] = getelementptr inbounds [[A]]* [[ED_AFTER]], i64 -1
// CHECK-NEXT: invoke void @_ZN5test01AD1Ev([[A]]* [[ED_CUR]])
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[ED_CUR]], [[ED_BEGIN]]
// CHECK-NEXT: br i1 [[T0]],
// CHECK: ret void
// Partial destroy for initialization.
// CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK-NEXT: cleanup
// CHECK: [[PARTIAL_END:%.*]] = load [[A]]** [[ENDVAR]]
// CHECK-NEXT: [[T0:%.*]] = icmp eq [[A]]* [[E_BEGIN]], [[PARTIAL_END]]
// CHECK-NEXT: br i1 [[T0]],
// CHECK: [[E_AFTER:%.*]] = phi [[A]]* [ [[PARTIAL_END]], {{%.*}} ], [ [[E_CUR:%.*]], {{%.*}} ]
// CHECK-NEXT: [[E_CUR]] = getelementptr inbounds [[A]]* [[E_AFTER]], i64 -1
// CHECK-NEXT: invoke void @_ZN5test01AD1Ev([[A]]* [[E_CUR]])
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[E_CUR]], [[E_BEGIN]]
// CHECK-NEXT: br i1 [[T0]],
// Primary EH destructor.
// CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK-NEXT: cleanup
// CHECK: [[E0:%.*]] = getelementptr inbounds [10 x [[A]]]* [[AS]], i32 0, i32 0
// CHECK-NEXT: [[E_END:%.*]] = getelementptr inbounds [[A]]* [[E0]], i64 10
// CHECK-NEXT: br label
// Partial destructor for primary normal destructor.
// FIXME: There's some really bad block ordering here which causes
// the partial destroy for the primary normal destructor to fall
// within the primary EH destructor.
// CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK-NEXT: cleanup
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[ED_BEGIN]], [[ED_CUR]]
// CHECK-NEXT: br i1 [[T0]]
// CHECK: [[EDD_AFTER:%.*]] = phi [[A]]* [ [[ED_CUR]], {{%.*}} ], [ [[EDD_CUR:%.*]], {{%.*}} ]
// CHECK-NEXT: [[EDD_CUR]] = getelementptr inbounds [[A]]* [[EDD_AFTER]], i64 -1
// CHECK-NEXT: invoke void @_ZN5test01AD1Ev([[A]]* [[EDD_CUR]])
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[EDD_CUR]], [[ED_BEGIN]]
// CHECK-NEXT: br i1 [[T0]]
// Back to the primary EH destructor.
// CHECK: [[E_AFTER:%.*]] = phi [[A]]* [ [[E_END]], {{%.*}} ], [ [[E_CUR:%.*]], {{%.*}} ]
// CHECK-NEXT: [[E_CUR]] = getelementptr inbounds [[A]]* [[E_AFTER]], i64 -1
// CHECK-NEXT: invoke void @_ZN5test01AD1Ev([[A]]* [[E_CUR]])
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[E_CUR]], [[E0]]
// CHECK-NEXT: br i1 [[T0]],
}
namespace test1 {
struct A { A(); A(int); ~A(); };
struct B { A x, y, z; int w; };
void test() {
B v = { 5, 6, 7, 8 };
}
// CHECK: define void @_ZN5test14testEv()
// CHECK: [[V:%.*]] = alloca [[B:%.*]], align 4
// CHECK-NEXT: alloca i8*
// CHECK-NEXT: alloca i32
// CHECK-NEXT: [[X:%.*]] = getelementptr inbounds [[B]]* [[V]], i32 0, i32 0
// CHECK-NEXT: call void @_ZN5test11AC1Ei([[A:%.*]]* [[X]], i32 5)
// CHECK-NEXT: [[Y:%.*]] = getelementptr inbounds [[B]]* [[V]], i32 0, i32 1
// CHECK-NEXT: invoke void @_ZN5test11AC1Ei([[A]]* [[Y]], i32 6)
// CHECK: [[Z:%.*]] = getelementptr inbounds [[B]]* [[V]], i32 0, i32 2
// CHECK-NEXT: invoke void @_ZN5test11AC1Ei([[A]]* [[Z]], i32 7)
// CHECK: [[W:%.*]] = getelementptr inbounds [[B]]* [[V]], i32 0, i32 3
// CHECK-NEXT: store i32 8, i32* [[W]], align 4
// CHECK-NEXT: call void @_ZN5test11BD1Ev([[B]]* [[V]])
// CHECK-NEXT: ret void
// FIXME: again, the block ordering is pretty bad here
// CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK-NEXT: cleanup
// CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK-NEXT: cleanup
// CHECK: invoke void @_ZN5test11AD1Ev([[A]]* [[Y]])
// CHECK: invoke void @_ZN5test11AD1Ev([[A]]* [[X]])
}
namespace test2 {
struct A { A(); ~A(); };
void test() {
A v[4][7];
// CHECK: define void @_ZN5test24testEv()
// CHECK: [[V:%.*]] = alloca [4 x [7 x [[A:%.*]]]], align 1
// CHECK-NEXT: alloca i8*
// CHECK-NEXT: alloca i32
// Main initialization loop.
// CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [4 x [7 x [[A]]]]* [[V]], i32 0, i32 0, i32 0
// CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [[A]]* [[BEGIN]], i64 28
// CHECK-NEXT: br label
// CHECK: [[CUR:%.*]] = phi [[A]]* [ [[BEGIN]], {{%.*}} ], [ [[NEXT:%.*]], {{%.*}} ]
// CHECK-NEXT: invoke void @_ZN5test21AC1Ev([[A]]* [[CUR]])
// CHECK: [[NEXT:%.*]] = getelementptr inbounds [[A]]* [[CUR]], i64 1
// CHECK-NEXT: [[DONE:%.*]] = icmp eq [[A]]* [[NEXT]], [[END]]
// CHECK-NEXT: br i1 [[DONE]],
// Partial destruction landing pad.
// CHECK: landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
// CHECK-NEXT: cleanup
// CHECK: [[EMPTY:%.*]] = icmp eq [[A]]* [[BEGIN]], [[CUR]]
// CHECK-NEXT: br i1 [[EMPTY]],
// CHECK: [[PAST:%.*]] = phi [[A]]* [ [[CUR]], {{%.*}} ], [ [[DEL:%.*]], {{%.*}} ]
// CHECK-NEXT: [[DEL]] = getelementptr inbounds [[A]]* [[PAST]], i64 -1
// CHECK-NEXT: invoke void @_ZN5test21AD1Ev([[A]]* [[DEL]])
// CHECK: [[T0:%.*]] = icmp eq [[A]]* [[DEL]], [[BEGIN]]
// CHECK-NEXT: br i1 [[T0]],
}
}
// PR10351
namespace test3 {
struct A { A(); ~A(); void *p; };
struct B {
B() {}
A a;
};
B *test() {
return new B[10];
// invoke void @_ZN5test31BD1Ev(
}
}
Reference in New Issue View Git Blame Copy Permalink