[IR] AutoUpgrade ModuleFlagBehavior for PIC and PIE level
Summary:
From r303590, ModuleFlagBehavior for PIC and PIE level is changed from
Error to Max. This will cause bitcode compatibility issue when linking
against a bitcode static archive built with old compiler.
Add an auto-ugprade path to upgrade the the ModuleFlagBehavior in the
old bitcode to match the new one so IRLinker can link them.
Reviewers: tejohnson, mehdi_amini, dexonsmith
Reviewed By: dexonsmith
Subscribers: hans, llvm-commits
Differential Revision: https://reviews.llvm.org/D36556
llvm-svn: 311387
diff --git a/llvm/test/Linker/module-flags-pic-1-a.ll b/llvm/test/Linker/module-flags-pic-1-a.ll
index ea93335..9074aa6 100644
--- a/llvm/test/Linker/module-flags-pic-1-a.ll
+++ b/llvm/test/Linker/module-flags-pic-1-a.ll
@@ -2,8 +2,8 @@
; test linking modules with specified and default PIC levels
-!0 = !{ i32 1, !"PIC Level", i32 1 }
+!0 = !{ i32 7, !"PIC Level", i32 1 }
!llvm.module.flags = !{!0}
; CHECK: !llvm.module.flags = !{!0}
-; CHECK: !0 = !{i32 1, !"PIC Level", i32 1}
+; CHECK: !0 = !{i32 7, !"PIC Level", i32 1}