RPCSX/llvm
1
0
Fork 0
mirror of https://github.com/RPCSX/llvm.git synced 2024-11-30 07:00:45 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

PreSelection is not optional, it performs a necessary and vital transformation

Browse Source 
for the Sparc backend: breaking up constant expressions. Thus, we cannot have it
guarded by a conditional, it should never be disabled.

Also, it's now available for the JIT since it is a FunctionPass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9791 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2003-11-07 20:33:25 +00:00
parent cb93d8d3a9
commit 351881793a
1 changed files with 15 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
lib/Target/SparcV9/SparcV9TargetMachine.cpp
View File

@ -42,9 +42,6 @@ const TargetInstrDescriptor SparcMachineInstrDesc[] = {
// Command line options to control choice of code generation passes.
//---------------------------------------------------------------------------
static cl::opt<bool> DisablePreOpt("disable-preopt",
cl::desc("Disable optimizations prior to instruction selection"));
static cl::opt<bool> DisableSched("disable-sched",
cl::desc("Disable local scheduling pass"));
@ -178,15 +175,13 @@ bool UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
//so %fp+offset-8 and %fp+offset-16 are empty slots now!
PM.add(createStackSlotsPass(*this));
if (!DisablePreOpt) {
// Specialize LLVM code for this target machine
PM.add(createPreSelectionPass(*this));
// Run basic dataflow optimizations on LLVM code
PM.add(createReassociatePass());
PM.add(createLICMPass());
PM.add(createGCSEPass());
}
// Specialize LLVM code for this target machine
PM.add(createPreSelectionPass(*this));
// Run basic dataflow optimizations on LLVM code
PM.add(createReassociatePass());
PM.add(createLICMPass());
PM.add(createGCSEPass());
// If LLVM dumping after transformations is requested, add it to the pipeline
if (DumpInput)
PM.add(new PrintFunctionPass("Input code to instr. selection:\n",
@ -252,6 +247,14 @@ bool UltraSparc::addPassesToJITCompile(FunctionPassManager &PM) {
// Construct and initialize the MachineFunction object for this fn.
PM.add(createMachineCodeConstructionPass(*this));
// Specialize LLVM code for this target machine and then
// run basic dataflow optimizations on LLVM code.
PM.add(createPreSelectionPass(*this));
// Run basic dataflow optimizations on LLVM code
PM.add(createReassociatePass());
PM.add(createLICMPass());
PM.add(createGCSEPass());
PM.add(createInstructionSelectionPass(*this));
PM.add(getRegisterAllocator(*this));