Howdy everybody.
I'm trying hard to load my backend. But I got problems.
I took the target SparcV8 for lab.
1. mark all of the code in the bool
SparcV8TargetMachine::addPassesToEmitAssembly(PassManager
&PM,std::ostream &Out)
and make it return false.( Of course I mark the // Output assembly language.
PM.add(createSparcV8CodePrinterPass(Out, *this));)
2. generate the LLVMSparcV8.so in the /usr/local/lib
3. run llc -load=/usr/local/lib/LLVMSparcV8.so -march=sparcv8 test.bc -o test.s
Guess what? I got the assembly code of the test.bc....
why....why....why?????
What's wrong with my steps????
Please help me!!!Thanx!
Dave.
On Fri, Jan 28, 2005 at 10:53:35AM +0800, s88 wrote:> I'm trying hard to load my backend. But I got problems. > I took the target SparcV8 for lab. > > 1. mark all of the code in the bool > SparcV8TargetMachine::addPassesToEmitAssembly(PassManager &PM, > std::ostream &Out) > and make it return false.It already returns false, what exactly did you do?> 2. generate the LLVMSparcV8.so in the /usr/local/lib > 3. run llc -load=/usr/local/lib/LLVMSparcV8.so -march=sparcv8 test.bc > -o test.s > > Guess what? I got the assembly code of the test.bc.... > why....why....why????? > What's wrong with my steps????That's the correct behavior (you didn't change anything), and I don't understand what you mean -- there's nothing wrong. Does _YOUR_ addPassesToEmitAssembly() return false? Because that's what it shold be doing. -- Misha Brukman :: http://misha.brukman.net :: http://llvm.cs.uiuc.edu
On Fri, Jan 28, 2005 at 10:53:35AM +0800, s88 wrote:> 1. mark all of the code in the bool > SparcV8TargetMachine::addPassesToEmitAssembly(PassManager > &PM,std::ostream &Out) > and make it return false.( Of course I mark the // Output assembly language. > PM.add(createSparcV8CodePrinterPass(Out, *this));) > 2. generate the LLVMSparcV8.so in the /usr/local/lib > 3. run llc -load=/usr/local/lib/LLVMSparcV8.so -march=sparcv8 test.bc -o test.s > > Guess what? I got the assembly code of the test.bc.... > why....why....why????? > What's wrong with my steps????I'm sorry, I think I understand now. You commented out all the code in addPassesToEmitAssembly() and it still outputs assembly code? Did you change the tools/llc/Makefile to NOT link in SparcV8? Because if it already linked it in, LLC already had a fully-functioning V8 backend linked into it, so you're probably running the staticly-linked one (although LLC should probably complain that someone else already signed up on the "sparcv8" switch...) -- Misha Brukman :: http://misha.brukman.net :: http://llvm.cs.uiuc.edu