6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-25 13:24:46 +00:00
Code Issues Projects Releases Wiki Activity

first part of JIT support for address of labels, part of PR7264,

Browse Source 
patch by Yuri!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108107 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-07-11 23:07:28 +00:00
parent b162290e39
commit 68feb22ad8
3 changed files with 81 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
lib/ExecutionEngine/JIT/JIT.cpp
View File

@@ -626,10 +626,7 @@ void JIT::runJITOnFunction(Function *F, MachineCodeInfo *MCI) {
void JIT::runJITOnFunctionUnlocked(Function *F, const MutexGuard &locked) {
assert(!isAlreadyCodeGenerating && "Error: Recursive compilation detected!");
// JIT the function
isAlreadyCodeGenerating = true;
jitstate->getPM(locked).run(*F);
isAlreadyCodeGenerating = false;
jitTheFunction(F, locked);
// If the function referred to another function that had not yet been
// read from bitcode, and we are jitting non-lazily, emit it now.
@@ -640,10 +637,7 @@ void JIT::runJITOnFunctionUnlocked(Function *F, const MutexGuard &locked) {
assert(!PF->hasAvailableExternallyLinkage() &&
"Externally-defined function should not be in pending list.");
// JIT the function
isAlreadyCodeGenerating = true;
jitstate->getPM(locked).run(*PF);
isAlreadyCodeGenerating = false;
jitTheFunction(PF, locked);
// Now that the function has been jitted, ask the JITEmitter to rewrite
// the stub with real address of the function.
@@ -651,6 +645,15 @@ void JIT::runJITOnFunctionUnlocked(Function *F, const MutexGuard &locked) {
}
}
void JIT::jitTheFunction(Function *F, const MutexGuard &locked) {
isAlreadyCodeGenerating = true;
jitstate->getPM(locked).run(*F);
isAlreadyCodeGenerating = false;
// clear basic block addresses after this function is done
getBasicBlockAddressMap(locked).clear();
}
/// getPointerToFunction - This method is used to get the address of the
/// specified function, compiling it if neccesary.
///
@@ -687,6 +690,41 @@ void *JIT::getPointerToFunction(Function *F) {
return Addr;
}
void JIT::addPointerToBasicBlock(const BasicBlock *BB, void *Addr) {
MutexGuard locked(lock);
BasicBlockAddressMapTy::iterator I =
getBasicBlockAddressMap(locked).find(BB);
if (I == getBasicBlockAddressMap(locked).end()) {
getBasicBlockAddressMap(locked)[BB] = Addr;
} else {
// ignore repeats: some BBs can be split into few MBBs?
}
}
void JIT::clearPointerToBasicBlock(const BasicBlock *BB) {
MutexGuard locked(lock);
getBasicBlockAddressMap(locked).erase(BB);
}
void *JIT::getPointerToBasicBlock(BasicBlock *BB) {
// make sure it's function is compiled by JIT
(void)getPointerToFunction(BB->getParent());
// resolve basic block address
MutexGuard locked(lock);
BasicBlockAddressMapTy::iterator I =
getBasicBlockAddressMap(locked).find(BB);
if (I != getBasicBlockAddressMap(locked).end()) {
return I->second;
} else {
assert(0 && "JIT does not have BB address for address-of-label, was"
" it eliminated by optimizer?");
return 0;
}
}
/// getOrEmitGlobalVariable - Return the address of the specified global
/// variable, possibly emitting it to memory if needed. This is used by the
/// Emitter.