32 to 64-bit zext pattern.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146096 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Mips/mips64ext.ll b/test/CodeGen/Mips/mips64ext.ll
new file mode 100644
index 0000000..33af0d8
--- /dev/null
+++ b/test/CodeGen/Mips/mips64ext.ll
@@ -0,0 +1,11 @@
+; RUN: llc < %s -march=mips64el -mcpu=mips64 -mattr=n64 | FileCheck %s
+
+define i64 @zext64_32(i32 %a) nounwind readnone {
+entry:
+; CHECK: addiu $[[R0:[0-9]+]], ${{[0-9]+}}, 2
+; CHECK: dsll32 $[[R1:[0-9]+]], $[[R0]], 0
+; CHECK: dsrl32 ${{[0-9]+}}, $[[R1]], 0
+ %add = add i32 %a, 2
+ %conv = zext i32 %add to i64
+ ret i64 %conv
+}