From fe63ecd5a01dfbd9b6f3bb6aab723f50a7d3bff2 Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Fri, 6 Oct 2017 18:06:59 +0000
Subject: Bitcode: add an auto-upgrade for LTO section name

The bitcode reader looks specifically for `__DATA, __objc_catlist` as a
section name.  However, SVN r304661 removed the spaces (the two names
are functionally equivalent but do not compare equally
lexicographically).  This causes compatibility issues.  Add an
auto-upgrade path for removing the spaces as well as use the new name in
the LTO plugin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@315086 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Bitcode/upgrade-section-name.ll | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 test/Bitcode/upgrade-section-name.ll

(limited to 'test/Bitcode')

diff --git a/test/Bitcode/upgrade-section-name.ll b/test/Bitcode/upgrade-section-name.ll
new file mode 100644
index 00000000000..fcc7228f5fd
--- /dev/null
+++ b/test/Bitcode/upgrade-section-name.ll
@@ -0,0 +1,31 @@
+; RUN: llvm-as %s -o - | llvm-dis - | FileCheck %s
+
+%struct._class_t = type { %struct._class_t*, %struct._class_t*, %struct._objc_cache*, i8* (i8*, i8*)**, %struct._class_ro_t* }
+%struct._objc_cache = type opaque
+%struct._class_ro_t = type { i32, i32, i32, i8*, i8*, %struct.__method_list_t*, %struct._objc_protocol_list*, %struct._ivar_list_t*, i8*, %struct._prop_list_t* }
+%struct.__method_list_t = type { i32, i32, [0 x %struct._objc_method] }
+%struct._objc_method = type { i8*, i8*, i8* }
+%struct._objc_protocol_list = type { i64, [0 x %struct._protocol_t*] }
+%struct._protocol_t = type { i8*, i8*, %struct._objc_protocol_list*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct._prop_list_t*, i32, i32, i8**, i8*, %struct._prop_list_t* }
+%struct._ivar_list_t = type { i32, i32, [0 x %struct._ivar_t] }
+%struct._ivar_t = type { i64*, i8*, i8*, i32, i32 }
+%struct._prop_list_t = type { i32, i32, [0 x %struct._prop_t] }
+%struct._prop_t = type { i8*, i8* }
+%struct._category_t = type { i8*, %struct._class_t*, %struct.__method_list_t*, %struct.__method_list_t*, %struct._objc_protocol_list*, %struct._prop_list_t*, %struct._prop_list_t*, i32 }
+
+@OBJC_CLASS_NAME_ = private unnamed_addr constant [6 x i8] c"Robot\00", section "__TEXT,__objc_classname,cstring_literals", align 1
+@"OBJC_CLASS_$_I" = external global %struct._class_t
+@"\01l_OBJC_$_CATEGORY_I_$_Robot" = private global %struct._category_t { i8* getelementptr inbounds ([6 x i8], [6 x i8]* @OBJC_CLASS_NAME_, i32 0, i32 0), %struct._class_t* @"OBJC_CLASS_$_I", %struct.__method_list_t* null, %struct.__method_list_t* null, %struct._objc_protocol_list* null, %struct._prop_list_t* null, %struct._prop_list_t* null, i32 64 }, section "__DATA, __objc_const", align 8
+@"OBJC_LABEL_CATEGORY_$" = private global [1 x i8*] [i8* bitcast (%struct._category_t* @"\01l_OBJC_$_CATEGORY_I_$_Robot" to i8*)], section "__DATA, __objc_catlist, regular, no_dead_strip", align 8
+@llvm.compiler.used = appending global [3 x i8*] [i8* bitcast (%struct._category_t* @"\01l_OBJC_$_CATEGORY_I_$_Robot" to i8*), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @OBJC_CLASS_NAME_, i32 0, i32 0), i8* bitcast ([1 x i8*]* @"OBJC_LABEL_CATEGORY_$" to i8*)], section "llvm.metadata"
+
+!llvm.module.flags = !{!0, !1, !2, !3, !4, !5}
+
+!0 = !{i32 1, !"Objective-C Version", i32 2}
+!1 = !{i32 1, !"Objective-C Image Info Version", i32 0}
+!2 = !{i32 1, !"Objective-C Image Info Section", !"__DATA, __objc_imageinfo, regular, no_dead_strip"}
+!3 = !{i32 4, !"Objective-C Garbage Collection", i32 0}
+!4 = !{i32 1, !"Objective-C Class Properties", i32 64}
+!5 = !{i32 1, !"PIC Level", i32 2}
+
+; CHECK: @"OBJC_LABEL_CATEGORY_$" = {{.*}}, section "__DATA,__objc_catlist,regular,no_dead_strip"
-- 
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