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| -rw-r--r-- | test/Feature/varargs_new.ll | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/Feature/varargs_new.ll b/test/Feature/varargs_new.ll new file mode 100644 index 0000000000..df6b38e0cc --- /dev/null +++ b/test/Feature/varargs_new.ll @@ -0,0 +1,33 @@ +; 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. + +implementation ; Functions: +declare void %llvm.va_start(sbyte**) +declare void %llvm.va_copy(sbyte**, sbyte*) +declare void %llvm.va_end(sbyte**) + +int %test(int %X, ...) { + ; Allocate two va_list items. On this target, va_list is of type sbyte* + %ap = alloca sbyte* ; <sbyte**> [#uses=4] + %aq = alloca sbyte* ; <sbyte**> [#uses=2] + + ; Initialize variable argument processing + call void %llvm.va_start(sbyte** %ap) + + ; Read a single integer argument + %tmp = vaarg sbyte** %ap, int ; <int> [#uses=1] + + ; Demonstrate usage of llvm.va_copy and llvm_va_end + %apv = load sbyte** %ap ; <sbyte*> [#uses=1] + call void %llvm.va_copy(sbyte** %aq, sbyte* %apv) + call void %llvm.va_end(sbyte** %aq) + + ; Stop processing of arguments. + call void %llvm.va_end(sbyte** %ap) + ret int %tmp + +} |