diff options
Diffstat (limited to 'lib/Target/X86/X86TargetMachine.cpp')
| -rw-r--r-- | lib/Target/X86/X86TargetMachine.cpp | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp index 31eb4bd61c..eb4d19a778 100644 --- a/lib/Target/X86/X86TargetMachine.cpp +++ b/lib/Target/X86/X86TargetMachine.cpp @@ -29,6 +29,8 @@ namespace { cl::desc("Print generated machine code")); cl::opt<bool> NoPatternISel("disable-pattern-isel", cl::init(true), cl::desc("Use the 'simple' X86 instruction selector")); + cl::opt<bool> NoSSAPeephole("disable-ssa-peephole", cl::init(true), + cl::desc("Disable the ssa-based peephole optimizer (defaults to disabled)")); } // allocateX86TargetMachine - Allocate and return a subclass of TargetMachine @@ -66,9 +68,9 @@ bool X86TargetMachine::addPassesToEmitAssembly(PassManager &PM, else PM.add(createX86PatternInstructionSelector(*this)); - // TODO: optional optimizations go here - - // FIXME: Add SSA based peephole optimizer here. + // Run optional SSA-based machine code optimizations next... + if (!NoSSAPeephole) + PM.add(createX86SSAPeepholeOptimizerPass()); // Print the instruction selected machine code... if (PrintCode) @@ -117,7 +119,9 @@ bool X86TargetMachine::addPassesToJITCompile(FunctionPassManager &PM) { else PM.add(createX86PatternInstructionSelector(*this)); - // TODO: optional optimizations go here + // Run optional SSA-based machine code optimizations next... + if (!NoSSAPeephole) + PM.add(createX86SSAPeepholeOptimizerPass()); // FIXME: Add SSA based peephole optimizer here. |