diff options
Diffstat (limited to 'lib/Target/X86/X86TargetMachine.cpp')
| -rw-r--r-- | lib/Target/X86/X86TargetMachine.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp index 893e62fd4f..2de30f7245 100644 --- a/lib/Target/X86/X86TargetMachine.cpp +++ b/lib/Target/X86/X86TargetMachine.cpp @@ -20,6 +20,8 @@ namespace { cl::desc("Use Simple RA instead of Local RegAlloc")); cl::opt<bool> PrintCode("print-machineinstrs", cl::desc("Print generated machine code")); + cl::opt<bool> NoPatternISel("disable-pattern-isel", cl::init(true), + cl::desc("Use the 'simple' X86 instruction selector")); } // allocateX86TargetMachine - Allocate and return a subclass of TargetMachine @@ -59,7 +61,10 @@ bool X86TargetMachine::addPassesToJITCompile(PassManager &PM) { // FIXME: Implement the switch instruction in the instruction selector! PM.add(createLowerSwitchPass()); - PM.add(createX86SimpleInstructionSelector(*this)); + if (NoPatternISel) + PM.add(createX86SimpleInstructionSelector(*this)); + else + PM.add(createX86PatternInstructionSelector(*this)); // TODO: optional optimizations go here |