diff options
Diffstat (limited to 'test/Integer/varargs_bt.ll')
| -rw-r--r-- | test/Integer/varargs_bt.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/Integer/varargs_bt.ll b/test/Integer/varargs_bt.ll new file mode 100644 index 0000000..e740fd3 --- /dev/null +++ b/test/Integer/varargs_bt.ll @@ -0,0 +1,23 @@ +; RUN: llvm-as %s -o - | llvm-dis > %t1.ll; +; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll +; RUN: diff %t1.ll %t2.ll + +; Demonstrate all of the variable argument handling intrinsic functions plus +; the va_arg instruction. + +declare void @llvm.va_start(i8** %ap) +declare void @llvm.va_copy(i8** %aq, i8** %ap) +declare void @llvm.va_end(i8** %ap) + +define i33 @test(i33 %X, ...) { + %ap = alloca i8* + call void @llvm.va_start(i8** %ap) + %tmp = va_arg i8** %ap, i33 + + %aq = alloca i8* + call void @llvm.va_copy(i8** %aq, i8** %ap) + call void @llvm.va_end(i8** %aq) + + call void @llvm.va_end(i8** %ap) + ret i33 %tmp +} |