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New test, see comments.

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llvm-svn: 47078
This commit is contained in:
Dale Johannesen 2008-02-13 18:36:48 +00:00
parent 2e9661573f
commit cc4f128930
1 changed files with 48 additions and 0 deletions
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test/C++Frontend/2008-02-13-sret.cpp Normal file
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// RUN: %llvmgxx -S -O0 -emit-llvm %s -o - | grep retval | grep S242 | grep {i32 1} | count 2
// Test that all 8 bytes of ret in check242 are copied. llvm-gcc was
// treating S242 as if it were S93, which does not need to have the
// last 4 padding bytes copied.
typedef __builtin_va_list va_list;
typedef unsigned long size_t;
void *memset(void *, int, size_t);
struct S92 { int a:14; } ;
extern struct S92 s92;
struct S92 check92 () { struct S92 ret;
memset (&ret, 0, sizeof (ret));
ret.a = s92.a;
return ret; }
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); }