diff options
| author | Chris Lattner <sabre@nondot.org> | 2005-11-16 01:54:32 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-11-16 01:54:32 +0000 |
| commit | c961eea6cb8d0a2d75fa074832f5c797f90330ef (patch) | |
| tree | 1abe992915ac309d02e3a970258717aece952eec /lib/Target/X86/X86TargetMachine.cpp | |
| parent | 422b0cee7a32636303398d8788f98a59bf15381c (diff) | |
initial step at adding a dag-to-dag isel for X86 backend. Patch contributed
by Evan Cheng!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24371 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86TargetMachine.cpp')
| -rw-r--r-- | lib/Target/X86/X86TargetMachine.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp index 4862a230cb..1d87152d10 100644 --- a/lib/Target/X86/X86TargetMachine.cpp +++ b/lib/Target/X86/X86TargetMachine.cpp @@ -47,6 +47,9 @@ namespace { cl::location(X86ScalarSSE), cl::init(false)); + cl::opt<bool> EnableX86DAGDAG("enable-x86-dag-isel", cl::Hidden, + cl::desc("Enable DAG-to-DAG isel for X86")); + // FIXME: This should eventually be handled with target triples and // subtarget support! cl::opt<X86VectorEnum, true> @@ -124,7 +127,10 @@ bool X86TargetMachine::addPassesToEmitFile(PassManager &PM, std::ostream &Out, PM.add(createUnreachableBlockEliminationPass()); // Install an instruction selector. - PM.add(createX86ISelPattern(*this)); + if (EnableX86DAGDAG) + PM.add(createX86ISelDag(*this)); + else + PM.add(createX86ISelPattern(*this)); // Run optional SSA-based machine code optimizations next... if (!NoSSAPeephole) @@ -192,7 +198,10 @@ void X86JITInfo::addPassesToJITCompile(FunctionPassManager &PM) { PM.add(createUnreachableBlockEliminationPass()); // Install an instruction selector. - PM.add(createX86ISelPattern(TM)); + if (EnableX86DAGDAG) + PM.add(createX86ISelDag(TM)); + else + PM.add(createX86ISelPattern(TM)); // Run optional SSA-based machine code optimizations next... if (!NoSSAPeephole) |