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Add a test case for r156143, which enabled general varargs support for the 

64-bit PPC SVR4 ABI.

The test verifies passing of structures, items with 16-byte alignment, and
small items that are passed right-justified in the parameter save area slot.

llvm-svn: 165245
This commit is contained in:
Bill Schmidt 2012-10-04 20:18:38 +00:00
parent f3b796ed81
commit a7b7f7256e
1 changed files with 32 additions and 0 deletions
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32
clang/test/CodeGen/ppc64-varargs-struct.c Normal file
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// REQUIRES: ppc64-registered-target
// RUN: %clang_cc1 -triple powerpc64-unknown-linux-gnu -emit-llvm -o - %s | FileCheck %s
#include <stdarg.h>
struct x {
long a;
double b;
};
void testva (int n, ...)
{
va_list ap;
struct x t = va_arg (ap, struct x);
// CHECK: bitcast i8* %ap.cur{{[0-9]*}} to %struct.x*
// CHECK: bitcast %struct.x* %t to i8*
// CHECK: bitcast %struct.x* %{{[0-9]+}} to i8*
// CHECK: call void @llvm.memcpy
__int128_t u = va_arg (ap, __int128_t);
// CHECK: ptrtoint i8* %ap.cur{{[0-9]*}} to i64
// CHECK: add i64 %{{[0-9]+}}, 15
// CHECK: and i64 %{{[0-9]+}}, 4294967280
// CHECK: inttoptr i64 %{{[0-9]+}} to i8*
int v = va_arg (ap, int);
// CHECK: ptrtoint i8* %ap.cur{{[0-9]*}} to i64
// CHECK: add i64 %{{[0-9]+}}, 4
// CHECK: inttoptr i64 %{{[0-9]+}} to i8*
// CHECK: bitcast i8* %{{[0-9]+}} to i32*
}