diff options
| author | Chris Lattner <sabre@nondot.org> | 2005-08-17 19:33:30 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-08-17 19:33:30 +0000 |
| commit | 8482dd894d7d64134f999d8e62bc9adf5cb239a9 (patch) | |
| tree | 9ddd39721e1204ad9f87a6ed32a05a5bad746ccd /lib/Target/PowerPC/PPCTargetMachine.cpp | |
| parent | a5a91b10262f5bbcf1ec8abd1e66ee6585d3f00e (diff) | |
add a beta option for turning on dag->dag isel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22837 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PPCTargetMachine.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCTargetMachine.cpp | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/lib/Target/PowerPC/PPCTargetMachine.cpp b/lib/Target/PowerPC/PPCTargetMachine.cpp index e1f29ba519..18c7fdc904 100644 --- a/lib/Target/PowerPC/PPCTargetMachine.cpp +++ b/lib/Target/PowerPC/PPCTargetMachine.cpp @@ -30,8 +30,11 @@ using namespace llvm; namespace { - const std::string PPC32ID = "PowerPC/32bit"; + const char *PPC32ID = "PowerPC/32bit"; + static cl::opt<bool> EnablePPCDAGDAG("enable-ppc-dag-isel", cl::Hidden, + cl::desc("Enable DAG-to-DAG isel for PPC (beta)")); + // Register the targets RegisterTarget<PPC32TargetMachine> X("ppc32", " PowerPC 32-bit"); @@ -81,8 +84,11 @@ bool PowerPCTargetMachine::addPassesToEmitFile(PassManager &PM, // Make sure that no unreachable blocks are instruction selected. PM.add(createUnreachableBlockEliminationPass()); - // Default to pattern ISel - if (PatternISelTriState == 0) { + // Install an instruction selector. + if (EnablePPCDAGDAG) { + PM.add(createPPC32ISelDag(*this)); + + } else if (PatternISelTriState == 0) { PM.add(createLowerConstantExpressionsPass()); PM.add(createPPC32ISelSimple(*this)); } else |