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/Feature/varargs.ll b/test/Feature/varargs.ll
new file mode 100644
index 0000000..672d96a
--- /dev/null
+++ b/test/Feature/varargs.ll
@@ -0,0 +1,24 @@
+; RUN: llvm-upgrade < %s | llvm-as | 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
+declare void %llvm.va_start(sbyte** %ap)
+declare void %llvm.va_copy(sbyte** %aq, sbyte** %ap)
+declare void %llvm.va_end(sbyte** %ap)
+
+int %test(int %X, ...) {
+ %ap = alloca sbyte*
+ call void %llvm.va_start(sbyte** %ap)
+ %tmp = va_arg sbyte** %ap, int
+
+ %aq = alloca sbyte*
+ call void %llvm.va_copy(sbyte** %aq, sbyte** %ap)
+ call void %llvm.va_end(sbyte** %aq)
+
+ call void %llvm.va_end(sbyte** %ap)
+ ret int %tmp
+}