Commit 76fe58b1 authored by Hans Wennborg's avatar Hans Wennborg
Browse files

Merging r276479: 

------------------------------------------------------------------------
r276479 | asbirlea | 2016-07-22 15:02:19 -0700 (Fri, 22 Jul 2016) | 11 lines

Add flag to PassManagerBuilder to disable GVN Hoist Pass.

Summary:
Adding a flag to diable GVN Hoisting by default.
Note: The GVN Hoist Pass causes some Halide tests to hang. Halide will disable the pass while investigating.

Reviewers: llvm-commits, chandlerc, spop, dberlin

Subscribers: mehdi_amini

Differential Revision: https://reviews.llvm.org/D22639
------------------------------------------------------------------------

llvm-svn: 276647
parent 3ce6eede

llvm/lib/Transforms/IPO/PassManagerBuilder.cpp

+6 −1
Original line number Diff line number Diff line
@@ -134,6 +134,10 @@ static cl::opt<int> PreInlineThreshold( 
    cl::desc("Control the amount of inlining in pre-instrumentation inliner "

             "(default = 75)"));



static cl::opt<bool> EnableGVNHoist(

    "enable-gvn-hoist", cl::init(false), cl::Hidden,

    cl::desc("Enable the experimental GVN Hoisting pass"));



PassManagerBuilder::PassManagerBuilder() {

    OptLevel = 2;

    SizeLevel = 0;
@@ -232,6 +236,7 @@ void PassManagerBuilder::populateFunctionPassManager( 
  FPM.add(createCFGSimplificationPass());

  FPM.add(createSROAPass());

  FPM.add(createEarlyCSEPass());

  if(EnableGVNHoist)

    FPM.add(createGVNHoistPass());

  FPM.add(createLowerExpectIntrinsicPass());

}