Files
clang-p2996/clang/test/CodeGen/2007-09-28-PackedUnionMember.c
Richard Smith dafff94759 constexpr irgen: Add irgen support for APValue::Struct, APValue::Union,
APValue::Array and APValue::MemberPointer. All APValue values can now be emitted
as constants.

Add new CGCXXABI entry point for emitting an APValue MemberPointer. The other
entrypoints dealing with constant member pointers are no longer necessary and
will be removed in a later change.

Switch codegen from using EvaluateAsRValue/EvaluateAsLValue to
VarDecl::evaluateValue. This performs caching and deals with the nasty cases in
C++11 where a non-const object's initializer can refer indirectly to
previously-initialized fields within the same object.

Building the intermediate APValue object incurs a measurable performance hit on
pathological testcases with huge initializer lists, so we continue to build IR
directly from the Expr nodes for array and record types outside of C++11.

llvm-svn: 148178
2012-01-14 04:30:29 +00:00

39 lines
627 B
C

// RUN: %clang_cc1 %s -emit-llvm -o -
#pragma pack(push, 2)
struct H {
unsigned long f1;
unsigned long f2;
union {
struct opaque1 *f3;
struct opaque2 *f4;
struct {
struct opaque3 *f5;
unsigned short f6;
} f7;
} f8;
};
#pragma pack(pop)
struct E {
unsigned long f1;
unsigned long f2;
};
typedef long (*FuncPtr) ();
extern long bork(FuncPtr handler, const struct E *list);
static long hndlr()
{
struct H cmd = { 4, 412 };
struct H cmd2 = { 4, 412, 0 };
return 0;
}
void foo(void *inWindow) {
static const struct E events[] = {
{ 123124, 1 }
};
bork(hndlr, events);
}