diff options
Diffstat (limited to 'lib/CodeGen/LLVMTargetMachine.cpp')
| -rw-r--r-- | lib/CodeGen/LLVMTargetMachine.cpp | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp index b856d90..80dbb98 100644 --- a/lib/CodeGen/LLVMTargetMachine.cpp +++ b/lib/CodeGen/LLVMTargetMachine.cpp @@ -74,16 +74,6 @@ static cl::opt<bool> EnableMCLogging("enable-mc-api-logging", cl::Hidden, static cl::opt<bool> VerifyMachineCode("verify-machineinstrs", cl::Hidden, cl::desc("Verify generated machine code"), cl::init(getenv("LLVM_VERIFY_MACHINEINSTRS")!=NULL)); -// Enabled or disable local stack object block allocation. This is an -// experimental pass that allocates locals relative to one another before -// register allocation and then assigns them to actual stack slots as a block -// later in PEI. This will eventually allow targets with limited index offset -// range to allocate additional base registers (not just FP and SP) to -// more efficiently reference locals, as well as handle situations where -// locals cannot be referenced via SP or FP at all (dynamic stack realignment -// together with variable sized objects, for example). -cl::opt<bool> EnableLocalStackAlloc("enable-local-stack-alloc", cl::init(false), - cl::Hidden, cl::desc("Enable pre-regalloc stack frame index allocation")); static cl::opt<cl::boolOrDefault> AsmVerbose("asm-verbose", cl::desc("Add comments to directives."), @@ -354,11 +344,9 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, if (OptLevel != CodeGenOpt::None) PM.add(createOptimizePHIsPass()); - // Assign local variables to stack slots relative to one another and simplify - // frame index references where possible. Final stack slot locations will be - // assigned in PEI. - if (EnableLocalStackAlloc) - PM.add(createLocalStackSlotAllocationPass()); + // If the target requests it, assign local variables to stack slots relative + // to one another and simplify frame index references where possible. + PM.add(createLocalStackSlotAllocationPass()); if (OptLevel != CodeGenOpt::None) { // With optimization, dead code should already be eliminated. However |