From: Dan Gohman <gohman@apple.com>
Date: Fri, 18 Dec 2009 01:05:06 +0000 (+0000)
Subject: Tidy up this testcase and add test for tailcall optimization
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=f838e2366a9d41ce4b5e22e6fda218eb176ebb50;p=oota-llvm.git

Tidy up this testcase and add test for tailcall optimization
with unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91650 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/CodeGen/X86/tailcall1.ll b/test/CodeGen/X86/tailcall1.ll
index 4923df26b45..42f8cdd3841 100644
--- 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
+}