From 7f3bf01d637e0eff79192fbb3c09f13b2b3adb7e Mon Sep 17 00:00:00 2001
From: Tobias Grosser <tobias@grosser.es>
Date: Sat, 24 Jun 2017 08:09:33 +0000
Subject: Ensure backends available in 'opt' are also available in 'bugpoint'

This patch links LLVM back-ends into bugpoint the same way they are already
available in 'opt' and 'clang'. This resolves an inconsistency that allowed the
use of LLVM backends in loadable modules that run in 'opt', but that would
prevent the debugging of these modules with bugpoint due to unavailable /
unresolved symbols.

For e.g. In D31859, Polly requires the NVPTX back-end.

Reviewers: hfinkel, bogner, chandlerc, grosser, Meinersbur

Subscribers: bollu, mgorny, grosser, Meinersbur

Tags: #polly

Contributed by: Singapuram Sanjay

Differential Revision: https://reviews.llvm.org/D32003

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@306208 cdac9f57-aa62-4fd3-8940-286f4534e8a0
---
 tools/bugpoint/CMakeLists.txt | 1 +
 tools/bugpoint/LLVMBuild.txt  | 1 +
 tools/bugpoint/bugpoint.cpp   | 9 +++++++++
 3 files changed, 11 insertions(+)

(limited to 'tools/bugpoint')

diff --git a/tools/bugpoint/CMakeLists.txt b/tools/bugpoint/CMakeLists.txt
index 7598657427e..8975e676343 100644
--- a/tools/bugpoint/CMakeLists.txt
+++ b/tools/bugpoint/CMakeLists.txt
@@ -1,4 +1,5 @@
 set(LLVM_LINK_COMPONENTS
+  ${LLVM_TARGETS_TO_BUILD}
   Analysis
   BitWriter
   CodeGen
diff --git a/tools/bugpoint/LLVMBuild.txt b/tools/bugpoint/LLVMBuild.txt
index 37a60587054..68ecb8c8f4f 100644
--- a/tools/bugpoint/LLVMBuild.txt
+++ b/tools/bugpoint/LLVMBuild.txt
@@ -30,3 +30,4 @@ required_libraries =
  Linker
  ObjCARC
  Scalar
+ all-targets
diff --git a/tools/bugpoint/bugpoint.cpp b/tools/bugpoint/bugpoint.cpp
index 85c1ddd8277..a486342457c 100644
--- a/tools/bugpoint/bugpoint.cpp
+++ b/tools/bugpoint/bugpoint.cpp
@@ -26,6 +26,7 @@
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Process.h"
 #include "llvm/Support/Signals.h"
+#include "llvm/Support/TargetSelect.h"
 #include "llvm/Support/Valgrind.h"
 #include "llvm/Transforms/IPO/AlwaysInliner.h"
 #include "llvm/Transforms/IPO/PassManagerBuilder.h"
@@ -138,6 +139,14 @@ int main(int argc, char **argv) {
   polly::initializePollyPasses(Registry);
 #endif
 
+  if (std::getenv("bar") == (char*) -1) {
+    InitializeAllTargets();
+    InitializeAllTargetMCs();
+    InitializeAllAsmPrinters();
+    InitializeAllAsmParsers();
+    InitializeAllDisassemblers();
+  }
+
   cl::ParseCommandLineOptions(argc, argv,
                               "LLVM automatic testcase reducer. See\nhttp://"
                               "llvm.org/cmds/bugpoint.html"
-- 
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