Change llc command line for register allocators
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8815 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index 60f8bbc..8f6829f 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -16,8 +16,15 @@
#include "Support/Statistic.h"
namespace {
- cl::opt<bool> NoLocalRA("disable-local-ra",
- cl::desc("Use Simple RA instead of Local RegAlloc"));
+ cl::opt<RegAllocName>
+ RegAlloc("regalloc",
+ cl::desc("Register allocator to use: (default = simple)"),
+ cl::Prefix,
+ cl::values(clEnumVal(simple, " simple register allocator"),
+ clEnumVal(local, " local register allocator"),
+ 0),
+ cl::init(local));
+
cl::opt<bool> PrintCode("print-machineinstrs",
cl::desc("Print generated machine code"));
cl::opt<bool> NoPatternISel("disable-pattern-isel", cl::init(true),
@@ -66,10 +73,16 @@
PM.add(createMachineFunctionPrinterPass());
// Perform register allocation to convert to a concrete x86 representation
- if (NoLocalRA)
+ switch (RegAlloc) {
+ case simple:
PM.add(createSimpleRegisterAllocator());
- else
+ break;
+ case local:
PM.add(createLocalRegisterAllocator());
+ break;
+ default:
+ assert(0 && "no register allocator selected");
+ }
if (PrintCode)
PM.add(createMachineFunctionPrinterPass());
@@ -113,10 +126,16 @@
PM.add(createMachineFunctionPrinterPass());
// Perform register allocation to convert to a concrete x86 representation
- if (NoLocalRA)
+ switch (RegAlloc) {
+ case simple:
PM.add(createSimpleRegisterAllocator());
- else
+ break;
+ case local:
PM.add(createLocalRegisterAllocator());
+ break;
+ default:
+ assert(0 && "no register allocator selected");
+ }
if (PrintCode)
PM.add(createMachineFunctionPrinterPass());