[mips] Do not copy GOT address to register $gp if the function being called has
internal linkage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170092 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Mips/gpreg-lazy-binding.ll b/test/CodeGen/Mips/gpreg-lazy-binding.ll
new file mode 100644
index 0000000..85d8d4b
--- /dev/null
+++ b/test/CodeGen/Mips/gpreg-lazy-binding.ll
@@ -0,0 +1,27 @@
+; RUN: llc -march=mipsel -disable-mips-delay-filler < %s | FileCheck %s
+
+@g = external global i32
+
+; CHECK: addu $gp
+; CHECK: jalr $25
+; CHECK: nop
+; CHECK-NOT: addu $gp
+; CHECK: jalr $25
+
+define void @f0() nounwind {
+entry:
+ tail call void @externalFunc() nounwind
+ tail call fastcc void @internalFunc()
+ ret void
+}
+
+declare void @externalFunc()
+
+define internal fastcc void @internalFunc() nounwind noinline {
+entry:
+ %0 = load i32* @g, align 4
+ %inc = add nsw i32 %0, 1
+ store i32 %inc, i32* @g, align 4
+ ret void
+}
+