Test case for r152280, r152285 and r152290.
llvm-svn: 152292
diff --git a/llvm/test/CodeGen/Mips/zeroreg.ll b/llvm/test/CodeGen/Mips/zeroreg.ll
new file mode 100644
index 0000000..b890e1d
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/zeroreg.ll
@@ -0,0 +1,27 @@
+; RUN: llc < %s -march=mipsel | FileCheck %s
+
+@g1 = external global i32
+
+define i32 @foo0(i32 %s) nounwind readonly {
+entry:
+; CHECK-NOT: addiu
+; CHECK: movn
+ %tobool = icmp ne i32 %s, 0
+ %0 = load i32* @g1, align 4, !tbaa !0
+ %cond = select i1 %tobool, i32 0, i32 %0
+ ret i32 %cond
+}
+
+define i32 @foo1(i32 %s) nounwind readonly {
+entry:
+; CHECK-NOT: addiu
+; CHECK: movz
+ %tobool = icmp ne i32 %s, 0
+ %0 = load i32* @g1, align 4, !tbaa !0
+ %cond = select i1 %tobool, i32 %0, i32 0
+ ret i32 %cond
+}
+
+!0 = metadata !{metadata !"int", metadata !1}
+!1 = metadata !{metadata !"omnipotent char", metadata !2}
+!2 = metadata !{metadata !"Simple C/C++ TBAA", null}