Add a regression test to sanity check the PBQP allocator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217057 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/Generic/PBQP.ll b/test/CodeGen/Generic/PBQP.ll
new file mode 100644 (file)
index 0000000..91fcfba
--- /dev/null
+++ b/test/CodeGen/Generic/PBQP.ll
@@ -0,0 +1,29 @@
+; RUN: llc -regalloc=pbqp < %s
+
+define i32 @foo() {
+entry:
+  %call = tail call i32 (...)* @baz()
+  %call1 = tail call i32 (...)* @baz()
+  %call2 = tail call i32 (...)* @baz()
+  %call3 = tail call i32 (...)* @baz()
+  %call4 = tail call i32 (...)* @baz()
+  %call5 = tail call i32 (...)* @baz()
+  %call6 = tail call i32 (...)* @baz()
+  %call7 = tail call i32 (...)* @baz()
+  %call8 = tail call i32 (...)* @baz()
+  %call9 = tail call i32 (...)* @baz()
+  %call10 = tail call i32 (...)* @baz()
+  %call11 = tail call i32 (...)* @baz()
+  %call12 = tail call i32 (...)* @baz()
+  %call13 = tail call i32 (...)* @baz()
+  %call14 = tail call i32 (...)* @baz()
+  %call15 = tail call i32 (...)* @baz()
+  %call16 = tail call i32 (...)* @baz()
+  %call17 = tail call i32 @bar(i32 %call, i32 %call1, i32 %call2, i32 %call3, i32 %call4, i32 %call5, i32 %call6, i32 %call7, i32 %call8, i32 %call9, i32 %call10, i32 %call11, i32 %call12, i32 %call13, i32 %call14, i32 %call15, i32 %call16)
+  ret i32 %call17
+}
+
+declare i32 @baz(...)
+
+declare i32 @bar(i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32)
+