[PATCH] D134802: [llvm-stress] Remove dependency to legacy pass manager

[Bjorn Pettersson via Phabricator via llvm-commits]

bjope created this revision.
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This patch removes the dependency to the legacy pass manager when
building llvm-stress.

Instead of setting up a pass manager at all we just run verifyModule
to check that the generated IR satisfies the verifier, and then
we run the PrintModulePass (new pass manager version) to print the
IR. This way we do not need to introduce a dependency to the
LLVMPasses component (which otherwise would have pulled in lots of
things making both the resulting binary larger and adding even more
build dependencies).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D134802

Files:
  llvm/tools/llvm-stress/llvm-stress.cpp


Index: llvm/tools/llvm-stress/llvm-stress.cpp
===================================================================
--- llvm/tools/llvm-stress/llvm-stress.cpp
+++ llvm/tools/llvm-stress/llvm-stress.cpp
@@ -29,12 +29,10 @@
 #include "llvm/IR/Instruction.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/Value.h"
 #include "llvm/IR/Verifier.h"
-#include "llvm/Pass.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/ErrorHandling.h"
@@ -761,10 +759,13 @@
     return 1;
   }
 
-  legacy::PassManager Passes;
-  Passes.add(createVerifierPass());
-  Passes.add(createPrintModulePass(Out->os()));
-  Passes.run(*M.get());
+  // Check that the generated module is accepted by the verifier.
+  if (verifyModule(*M.get(), &Out->os()))
+    report_fatal_error("Broken module found, compilation aborted!");
+
+  ModuleAnalysisManager MAM;
+  PrintModulePass(Out->os()).run(*M.get(), MAM);
+
   Out->keep();
 
   return 0;


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