diff options
Diffstat (limited to 'lib/Transforms/IPO/PassManagerBuilder.cpp')
| -rw-r--r-- | lib/Transforms/IPO/PassManagerBuilder.cpp | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/lib/Transforms/IPO/PassManagerBuilder.cpp b/lib/Transforms/IPO/PassManagerBuilder.cpp index 0d5910ebbfcc..203594572618 100644 --- a/lib/Transforms/IPO/PassManagerBuilder.cpp +++ b/lib/Transforms/IPO/PassManagerBuilder.cpp @@ -38,6 +38,7 @@ #include "llvm/Transforms/Instrumentation.h" #include "llvm/Transforms/Scalar.h" #include "llvm/Transforms/Scalar/GVN.h" +#include "llvm/Transforms/Scalar/SimpleLoopUnswitch.h" #include "llvm/Transforms/Vectorize.h" using namespace llvm; @@ -137,14 +138,19 @@ static cl::opt<int> PreInlineThreshold( "(default = 75)")); static cl::opt<bool> EnableGVNHoist( - "enable-gvn-hoist", cl::init(true), cl::Hidden, - cl::desc("Enable the GVN hoisting pass (default = on)")); + "enable-gvn-hoist", cl::init(false), cl::Hidden, + cl::desc("Enable the GVN hoisting pass (default = off)")); static cl::opt<bool> DisableLibCallsShrinkWrap("disable-libcalls-shrinkwrap", cl::init(false), cl::Hidden, cl::desc("Disable shrink-wrap library calls")); +static cl::opt<bool> + EnableSimpleLoopUnswitch("enable-simple-loop-unswitch", cl::init(false), + cl::Hidden, + cl::desc("Enable the simple loop unswitch pass.")); + PassManagerBuilder::PassManagerBuilder() { OptLevel = 2; SizeLevel = 0; @@ -318,7 +324,10 @@ void PassManagerBuilder::addFunctionSimplificationPasses( // Rotate Loop - disable header duplication at -Oz MPM.add(createLoopRotatePass(SizeLevel == 2 ? 0 : -1)); MPM.add(createLICMPass()); // Hoist loop invariants - MPM.add(createLoopUnswitchPass(SizeLevel || OptLevel < 3, DivergentTarget)); + if (EnableSimpleLoopUnswitch) + MPM.add(createSimpleLoopUnswitchLegacyPass()); + else + MPM.add(createLoopUnswitchPass(SizeLevel || OptLevel < 3, DivergentTarget)); MPM.add(createCFGSimplificationPass()); addInstructionCombiningPass(MPM); MPM.add(createIndVarSimplifyPass()); // Canonicalize indvars |