1 files changed, 48 insertions, 0 deletions
diff --git a/test/CodeGen/X86/dllimport-x86_64.ll b/test/CodeGen/X86/dllimport-x86_64.ll
new file mode 100644
index 0000000..666409f
--- /dev/null
+++ b/test/CodeGen/X86/dllimport-x86_64.ll
@@ -0,0 +1,48 @@
+; RUN: llc -mtriple x86_64-pc-win32 < %s | FileCheck %s
+; RUN: llc -mtriple x86_64-pc-mingw32 < %s | FileCheck %s
+;
+; RUN: llc -mtriple x86_64-pc-mingw32 -O0 < %s | FileCheck %s -check-prefix=FAST
+; PR6275
+;
+; RUN: opt -mtriple x86_64-pc-win32 -std-compile-opts -S < %s | FileCheck %s -check-prefix=OPT
+
+@Var1 = external dllimport global i32
+@Var2 = available_externally dllimport unnamed_addr constant i32 1
+
+declare dllimport void @fun()
+
+define available_externally dllimport void @inline1() {
+	ret void
+}
+
+define available_externally dllimport void @inline2() {
+	ret void
+}
+
+declare void @dummy(...)
+
+define void @use() nounwind {
+; CHECK:     callq *__imp_fun(%rip)
+; FAST:      movq  __imp_fun(%rip), [[R:%[a-z]{3}]]
+; FAST-NEXT: callq *[[R]]
+  call void @fun()
+
+; CHECK: callq *__imp_inline1(%rip)
+; CHECK: callq *__imp_inline2(%rip)
+  call void @inline1()
+  call void @inline2()
+
+; available_externally uses go away
+; OPT-NOT: call void @inline1()
+; OPT-NOT: call void @inline2()
+; OPT-NOT: load i32* @Var2
+; OPT: call void (...)* @dummy(i32 %1, i32 1)
+
+; CHECK-DAG: movq __imp_Var1(%rip), [[R1:%[a-z]{3}]]
+; CHECK-DAG: movq __imp_Var2(%rip), [[R2:%[a-z]{3}]]
+  %1 = load i32* @Var1
+  %2 = load i32* @Var2
+  call void(...)* @dummy(i32 %1, i32 %2)
+
+  ret void
+}