Tidy up this testcase and add test for tailcall optimization

[oota-llvm.git] / test / CodeGen / X86 / tailcall1.ll

diff --git a/test/CodeGen/X86/tailcall1.ll b/test/CodeGen/X86/tailcall1.ll
index 4923df26b45b95304e2c994523d980afbacfe587..42f8cdd384130e4fec8e56c1a8fd9a85cc082090 100644 (file)
--- a/test/CodeGen/X86/tailcall1.ll
+++ b/test/CodeGen/X86/tailcall1.ll
@@ -1,12 +1,10 @@
-; RUN: llc < %s -march=x86 -tailcallopt | grep TAILCALL | count 4
-define fastcc i32 @tailcallee(i32 %a1, i32 %a2, i32 %a3, i32 %a4) {
-entry:
-       ret i32 %a3
-}
+; RUN: llc < %s -march=x86 -tailcallopt | grep TAILCALL | count 5
+
+declare fastcc i32 @tailcallee(i32 %a1, i32 %a2, i32 %a3, i32 %a4)
 
-define fastcc i32 @tailcaller(i32 %in1, i32 %in2) {
+define fastcc i32 @tailcaller(i32 %in1, i32 %in2) nounwind {
 entry:
-       %tmp11 = tail call fastcc i32 @tailcallee( i32 %in1, i32 %in2, i32 %in1, i32 %in2 )             ; <i32> [#uses=1]
+       %tmp11 = tail call fastcc i32 @tailcallee(i32 %in1, i32 %in2, i32 %in1, i32 %in2)
        ret i32 %tmp11
 }
 
@@ -30,3 +28,10 @@ define fastcc i32 @ret_undef() nounwind {
   %p = tail call fastcc i32 @i32_callee()
   ret i32 undef
 }
+
+declare fastcc void @does_not_return()
+
+define fastcc i32 @noret() nounwind {
+  tail call fastcc void @does_not_return()
+  unreachable
+}