From 21590db8fdedc636700b8c662172f909be13abda Mon Sep 17 00:00:00 2001
From: Tanya Lattner <tonic@nondot.org>
Date: Thu, 18 Nov 2004 18:38:01 +0000
Subject: [PATCH] Adding option to llc for ModuloScheduling. By default it is
 turned off.

llvm-svn: 17959
---
 llvm/lib/Target/SparcV9/SparcV9TargetMachine.cpp | 15 +++++++++++++--
 llvm/tools/Makefile.JIT                          |  2 +-
 llvm/tools/llc/Makefile                          |  1 +
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/llvm/lib/Target/SparcV9/SparcV9TargetMachine.cpp b/llvm/lib/Target/SparcV9/SparcV9TargetMachine.cpp
index 3e0e8b931cc8..f5e19512ba4a 100644
--- a/llvm/lib/Target/SparcV9/SparcV9TargetMachine.cpp
+++ b/llvm/lib/Target/SparcV9/SparcV9TargetMachine.cpp
@@ -66,6 +66,9 @@ namespace {
   cl::opt<bool> DisableStrip("disable-strip",
                       cl::desc("Do not strip the LLVM bytecode in executable"));
 
+  
+  cl::opt<bool> EnableModSched("enable-ModSched", cl::desc("Enable modulo scheduling pass instead of local scheduling"));
+
   // Register the target.
   RegisterTarget<SparcV9TargetMachine> X("sparcv9", "  SPARC V9");
 }
@@ -192,9 +195,17 @@ SparcV9TargetMachine::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out
   
   PM.add(createSparcV9BurgInstSelector(*this));
 
-  if (!DisableSched)
-    PM.add(createInstructionSchedulingWithSSAPass(*this));
+  if(PrintMachineCode)
+    PM.add(createMachineFunctionPrinterPass(&std::cerr, "Before modulo scheduling:\n"));
 
+  //Use ModuloScheduling if enabled, otherwise use local scheduling if not disabled.
+  if(EnableModSched)
+    PM.add(createModuloSchedulingPass(*this));
+  else {
+    if (!DisableSched)
+      PM.add(createInstructionSchedulingWithSSAPass(*this));
+  }
+  
   if (PrintMachineCode)
     PM.add(createMachineFunctionPrinterPass(&std::cerr, "Before reg alloc:\n"));
 
diff --git a/llvm/tools/Makefile.JIT b/llvm/tools/Makefile.JIT
index e9e64787e267..6b2bb56ea759 100644
--- a/llvm/tools/Makefile.JIT
+++ b/llvm/tools/Makefile.JIT
@@ -44,7 +44,7 @@ endif
 # What the Sparc JIT requires
 ifdef ENABLE_SPARCV9_JIT
   JITLIBS  += LLVMSparcV9
-  ARCHLIBS += LLVMSparcV9InstrSched LLVMSparcV9LiveVar LLVMInstrumentation.a \
+  ARCHLIBS += LLVMSparcV9ModuloSched LLVMSparcV9InstrSched LLVMSparcV9LiveVar LLVMInstrumentation.a \
               LLVMProfilePaths LLVMBCWriter LLVMTransforms.a LLVMipo.a \
               LLVMipa.a LLVMDataStructure.a LLVMSparcV9RegAlloc
 endif
diff --git a/llvm/tools/llc/Makefile b/llvm/tools/llc/Makefile
index 553ff952add3..5e244cb5960d 100644
--- a/llvm/tools/llc/Makefile
+++ b/llvm/tools/llc/Makefile
@@ -10,6 +10,7 @@
 LEVEL = ../..
 TOOLNAME = llc
 USEDLIBS = \
+	LLVMSparcV9ModuloSched \
 	LLVMCBackend \
 	LLVMPowerPC \
 	LLVMSparcV9 \