Move enabling the local stack allocation pass into the target where it belongs.
For now it's still a command line option, but the interface to the generic
code doesn't need to know that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111942 91177308-0d34-0410-b5e6-96231b3b80d8
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> 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 @@
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