Ensure bitcode encoding of linkage types stays stable. Patch by Boaz Ouriel

llvm-svn: 196042

2 files changed, 128 insertions, 0 deletions

diff --git a/llvm/test/Bitcode/linkage-types-3.2.ll b/llvm/test/Bitcode/linkage-types-3.2.ll
new file mode 100644
index 00000000000..65c31dd1287
--- /dev/null
+++ b/llvm/test/Bitcode/linkage-types-3.2.ll
@@ -0,0 +1,128 @@
+; RUN:  llvm-dis < %s.bc| FileCheck %s
+
+; linkage-types-3.2.ll.bc was generated by passing this file to llvm-as-3.2
+; The test checks that LLVM does not silently misread linkage types of
+; older bitcode files.
+
+@common.var = common global i32 0
+; CHECK: @common.var = common global i32 0
+
+@appending.var = appending global [8 x i32] undef
+; CHECK: @appending.var = appending global [8 x i32] undef
+
+@extern_weak.var = extern_weak global i32
+; CHECK: @extern_weak.var = extern_weak global i32
+
+@private.var = private constant i32 0
+; CHECK: @private.var = private constant i32 0
+
+@linker_private.var = linker_private constant i32 0
+; CHECK: @linker_private.var = linker_private constant i32 0
+
+@linker_private_weak.var = linker_private_weak constant i32 0
+; CHECK: @linker_private_weak.var = linker_private_weak constant i32 0
+
+@linker_private_weak_def_auto.var = linker_private_weak_def_auto constant i32 0
+; CHECK: @linker_private_weak_def_auto.var = constant i32 0
+
+@internal.var = internal constant i32 0
+; CHECK: @internal.var = internal constant i32 0
+
+@available_externally.var = available_externally constant i32 0
+; CHECK: @available_externally.var = available_externally constant i32 0
+
+@linkonce.var = linkonce constant i32 0
+; CHECK: @linkonce.var = linkonce constant i32 0
+
+@weak.var = weak constant i32 0
+; CHECK: @weak.var = weak constant i32 0
+
+@linkonce_odr.var = linkonce_odr constant i32 0
+; CHECK: @linkonce_odr.var = linkonce_odr constant i32 0
+
+@linkonce_odr_auto_hide.var = linkonce_odr_auto_hide constant i32 0
+; CHECK: @linkonce_odr_auto_hide.var = constant i32 0
+
+@external.var = external constant i32
+; CHECK: @external.var = external constant i32
+
+@dllexport.var = dllexport global i32 0
+; CHECK: @dllexport.var = dllexport global i32 0
+
+@dllimport.var = dllimport global i32
+; CHECK: @dllimport.var = dllimport global i32
+
+define private void @private()
+; CHECK: define private void @private
+{
+  ret void;
+}
+
+define linker_private void @linker_private()
+; CHECK: define linker_private void @linker_private
+{
+  ret void;
+}
+
+define linker_private_weak void @linker_private_weak()
+; CHECK: define linker_private_weak void @linker_private_weak
+{
+  ret void;
+}
+
+define linker_private_weak_def_auto void @linker_private_weak_def_auto()
+; CHECK: define void @linker_private_weak_def_auto
+{
+  ret void;
+}
+
+define internal void @internal()
+; CHECK: define internal void @internal
+{
+  ret void;
+}
+
+define available_externally void @available_externally()
+; CHECK: define available_externally void @available_externally
+{
+  ret void;
+}
+
+define linkonce void @linkonce()
+; CHECK: define linkonce void @linkonce
+{
+  ret void;
+}
+
+define weak void @weak()
+; CHECK: define weak void @weak
+{
+  ret void;
+}
+
+define linkonce_odr void @linkonce_odr()
+; CHECK: define linkonce_odr void @linkonce_odr
+{
+  ret void;
+}
+
+define linkonce_odr_auto_hide void @linkonce_odr_auto_hide()
+; CHECK: define void @linkonce_odr_auto_hide
+{
+  ret void;
+}
+
+define external void @external()
+; CHECK: define void @external
+{
+  ret void;
+}
+
+declare dllimport void @dllimport()
+; CHECK: declare dllimport void @dllimport
+
+define dllexport void @dllexport()
+; CHECK: define dllexport void @dllexport()
+{
+  ret void;
+}
diff --git a/llvm/test/Bitcode/linkage-types-3.2.ll.bc b/llvm/test/Bitcode/linkage-types-3.2.ll.bc
new file mode 100644
index 00000000000..c856ddf7aa7
--- /dev/null
+++ b/llvm/test/Bitcode/linkage-types-3.2.ll.bc