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Allow TargetMachine to refuse static code gen

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4415 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-10-29 21:12:46 +00:00
parent 083ee69349
commit 6334205cb5
4 changed files with 17 additions and 9 deletions
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9
include/llvm/Target/TargetMachine.h
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@ -51,7 +51,7 @@ protected:
ShortAl, ByteAl) { }
public:
virtual ~TargetMachine() {}
//
// Interfaces to the major aspects of target machine information:
// -- Instruction opcode and operand information
@ -74,9 +74,12 @@ public:
/// addPassesToEmitAssembly - Add passes to the specified pass manager to get
/// assembly langage code emited. Typically this will involve several steps
/// of code generation.
/// of code generation. This method should return true if code generation is
/// not supported.
///
virtual void addPassesToEmitAssembly(PassManager &PM, std::ostream &Out) = 0;
virtual bool addPassesToEmitAssembly(PassManager &PM, std::ostream &Out) {
return true;
}
/// addPassesToJITCompile - Add passes to the specified pass manager to
/// implement a fast dynamic compiler for this target. Return true if this is

2
lib/Target/SparcV9/SparcV9Internals.h
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@ -718,7 +718,7 @@ public:
virtual const MachineCacheInfo &getCacheInfo() const { return cacheInfo; }
virtual const MachineOptInfo &getOptInfo() const { return optInfo; }
virtual void addPassesToEmitAssembly(PassManager &PM, std::ostream &Out);
virtual bool addPassesToEmitAssembly(PassManager &PM, std::ostream &Out);
// getPrologEpilogCodeInserter - Inserts prolog/epilog code.
virtual Pass* getPrologEpilogInsertionPass();

3
lib/Target/SparcV9/SparcV9TargetMachine.cpp
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@ -141,7 +141,7 @@ UltraSparc::UltraSparc()
// addPassesToEmitAssembly - This method controls the entire code generation
// process for the ultra sparc.
//
void UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
bool UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
{
// Construct and initialize the MachineFunction object for this fn.
PM.add(createMachineCodeConstructionPass(*this));
@ -189,4 +189,5 @@ void UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
// Emit bytecode to the assembly file into its special section next
PM.add(getEmitBytecodeToAsmPass(Out));
PM.add(getFunctionInfo(Out));
return false;
}

12
tools/llc/llc.cpp
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@ -281,10 +281,14 @@ main(int argc, char **argv)
}
}
Target.addPassesToEmitAssembly(Passes, *Out);
// Run our queue of passes all at once now, efficiently.
Passes.run(*M.get());
// Ask the target to add backend passes as neccesary
if (Target.addPassesToEmitAssembly(Passes, *Out)) {
cerr << argv[0] << ": target '" << Target.TargetName
<< " does not support static compilation!\n";
} else {
// Run our queue of passes all at once now, efficiently.
Passes.run(*M.get());
}
// Delete the ostream if it's not a stdout stream
if (Out != &std::cout) delete Out;