It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/bugpoint/TestPasses.cpp b/tools/bugpoint/TestPasses.cpp
new file mode 100644
index 0000000..6923215
--- /dev/null
+++ b/tools/bugpoint/TestPasses.cpp
@@ -0,0 +1,75 @@
+//===- TestPasses.cpp - "buggy" passes used to test bugpoint --------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains "buggy" passes that are used to test bugpoint, to check
+// that it is narrowing down testcases correctly.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/BasicBlock.h"
+#include "llvm/Constant.h"
+#include "llvm/Instructions.h"
+#include "llvm/Pass.h"
+#include "llvm/Type.h"
+#include "llvm/Support/InstVisitor.h"
+
+using namespace llvm;
+
+namespace {
+ /// CrashOnCalls - This pass is used to test bugpoint. It intentionally
+ /// crashes on any call instructions.
+ class CrashOnCalls : public BasicBlockPass {
+ public:
+ static char ID; // Pass ID, replacement for typeid
+ CrashOnCalls() : BasicBlockPass((intptr_t)&ID) {}
+ private:
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ }
+
+ bool runOnBasicBlock(BasicBlock &BB) {
+ for (BasicBlock::iterator I = BB.begin(), E = BB.end(); I != E; ++I)
+ if (isa<CallInst>(*I))
+ abort();
+
+ return false;
+ }
+ };
+
+ char CrashOnCalls::ID = 0;
+ RegisterPass<CrashOnCalls>
+ X("bugpoint-crashcalls",
+ "BugPoint Test Pass - Intentionally crash on CallInsts");
+}
+
+namespace {
+ /// DeleteCalls - This pass is used to test bugpoint. It intentionally
+ /// deletes some call instructions, "misoptimizing" the program.
+ class DeleteCalls : public BasicBlockPass {
+ public:
+ static char ID; // Pass ID, replacement for typeid
+ DeleteCalls() : BasicBlockPass((intptr_t)&ID) {}
+ private:
+ bool runOnBasicBlock(BasicBlock &BB) {
+ for (BasicBlock::iterator I = BB.begin(), E = BB.end(); I != E; ++I)
+ if (CallInst *CI = dyn_cast<CallInst>(I)) {
+ if (!CI->use_empty())
+ CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
+ CI->getParent()->getInstList().erase(CI);
+ break;
+ }
+ return false;
+ }
+ };
+
+ char DeleteCalls::ID = 0;
+ RegisterPass<DeleteCalls>
+ Y("bugpoint-deletecalls",
+ "BugPoint Test Pass - Intentionally 'misoptimize' CallInsts");
+}