From 0cf2b2b9f0c4f9fc18ef527a227045793a769dee Mon Sep 17 00:00:00 2001
From: Bruno Cardoso Lopes <bruno.cardoso@gmail.com>
Date: Wed, 10 Nov 2010 02:22:44 +0000
Subject: [PATCH] Add a test to the previous added clo instruction. Patch by
 Akira again

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118668 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/Mips/2010-11-09-CountLeading.ll | 33 ++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 test/CodeGen/Mips/2010-11-09-CountLeading.ll

diff --git a/test/CodeGen/Mips/2010-11-09-CountLeading.ll b/test/CodeGen/Mips/2010-11-09-CountLeading.ll
new file mode 100644
index 00000000000..d592fef331a
--- /dev/null
+++ b/test/CodeGen/Mips/2010-11-09-CountLeading.ll
@@ -0,0 +1,33 @@
+; RUN: llc -march=mips -mcpu=4ke < %s | FileCheck %s
+
+; CHECK: clz $2, $4
+define i32 @t1(i32 %X) nounwind readnone {
+entry:
+  %tmp1 = tail call i32 @llvm.ctlz.i32(i32 %X)
+  ret i32 %tmp1
+}
+
+declare i32 @llvm.ctlz.i32(i32) nounwind readnone
+
+; CHECK: clz $2, $4
+define i32 @t2(i32 %X) nounwind readnone {
+entry:
+  %tmp1 = tail call i32 @llvm.ctlz.i32(i32 %X)
+  ret i32 %tmp1
+}
+
+; CHECK: clo $2, $4
+define i32 @t3(i32 %X) nounwind readnone {
+entry:
+  %neg = xor i32 %X, -1
+  %tmp1 = tail call i32 @llvm.ctlz.i32(i32 %neg)
+  ret i32 %tmp1
+}
+
+; CHECK: clo $2, $4
+define i32 @t4(i32 %X) nounwind readnone {
+entry:
+  %neg = xor i32 %X, -1
+  %tmp1 = tail call i32 @llvm.ctlz.i32(i32 %neg)
+  ret i32 %tmp1
+}