It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
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
+}