llvm-6502/test/FrontendC++/2008-02-13-sret.cpp

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// RUN: %llvmgxx -S -O1 -m32 -emit-llvm %s -o - | grep {store i32} | count 1
// Test that all 8 bytes of ret in check242 are copied, and only 4 bytes of
// ret in check93 are copied (the same LLVM struct is used for both).
typedef __builtin_va_list va_list;
typedef unsigned long size_t;
void *memset(void *, int, size_t);
struct S93 { __attribute__((aligned (8))) void * a; } ;
extern struct S93 s93;
struct S93 check93 () {
struct S93 ret;
memset (&ret, 0, sizeof (ret));
ret.a = s93.a;
return ret; }
struct S242 { char * a;int b[1]; } ;
extern struct S242 s242;
struct S242 check242 () {
struct S242 ret;
memset (&ret, 0, sizeof (ret));
ret.a = s242.a;
ret.b[0] = s242.b[0];
return ret; }
void check93va (int z, ...) {
struct S93 arg;
va_list ap;
__builtin_va_start(ap,z);
arg = __builtin_va_arg(ap,struct S93);
__builtin_va_end(ap); }
void check242va (int z, ...) {
struct S242 arg;
va_list ap;
__builtin_va_start(ap,z);
arg = __builtin_va_arg(ap,struct S242);
__builtin_va_end(ap); }