[PATCH] Test varargs intrinsic support.

[Andrew Trick]

Hi lhames, ributzka, echristo,

This makes use of the new stackmap intrinsics to test varargs support.

http://llvm-reviews.chandlerc.com/D1994

Files:
  test/Verifier/varargs-intrinsic.ll

Index: test/Verifier/varargs-intrinsic.ll
===================================================================
--- /dev/null
+++ test/Verifier/varargs-intrinsic.ll
@@ -0,0 +1,16 @@
+; RUN: not llvm-as < %s -o /dev/null 2>&1 | FileCheck %s
+
+declare void @llvm.experimental.stackmap(i32, i32)
+declare void @llvm.donothing(...)
+
+define void @foo1() {
+  call void @llvm.experimental.stackmap(i32 0, i32 12)
+; CHECK: Callsite was not defined with variable arguments!
+  ret void
+}
+
+define void @foo2() {
+  call void (...)* @llvm.donothing(i32 0, i64 1)
+; CHECK: Intrinsic was not defined with variable arguments!
+  ret void
+}
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