RPCS3/llvm
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm.git synced 2024-12-04 17:58:22 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Implement support for code extracting basic blocks that have a return

Browse Source 
instruction in them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13490 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-05-12 16:07:41 +00:00
parent e746ad512e
commit d99e1d3afb
1 changed files with 12 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
lib/Transforms/Utils/CodeExtractor.cpp
View File

@ -77,6 +77,7 @@ namespace {
}
void severSplitPHINodes(BasicBlock *&Header);
void splitReturnBlocks();
void findInputsOutputs(Values &inputs, Values &outputs);
Function *constructFunction(const Values &inputs,
@ -184,8 +185,13 @@ void CodeExtractor::severSplitPHINodes(BasicBlock *&Header) {
}
}
}
}
verifyFunction(*NewBB->getParent());
void CodeExtractor::splitReturnBlocks() {
for (std::set<BasicBlock*>::iterator I = BlocksToExtract.begin(),
E = BlocksToExtract.end(); I != E; ++I)
if (ReturnInst *RI = dyn_cast<ReturnInst>((*I)->getTerminator()))
(*I)->splitBasicBlock(RI, (*I)->getName()+".ret");
}
// findInputsOutputs - Find inputs to, outputs from the code region.
@ -596,9 +602,13 @@ Function *CodeExtractor::ExtractCodeRegion(const std::vector<BasicBlock*> &code)
"No blocks in this region may have entries from outside the region"
" except for the first block!");
// If we have to split PHI nodes, do so now.
// If we have to split PHI nodes or the entry block, do so now.
severSplitPHINodes(header);
// If we have any return instructions in the region, split those blocks so
// that the return is not in the region.
splitReturnBlocks();
Function *oldFunction = header->getParent();
// This takes place of the original loop