6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-09-24 23:28:41 +00:00
Code Issues Projects Releases Wiki Activity

Factor the logic for testing whether a basic block is viable for code

Browse Source 
extraction into a public interface. Also clean it up and apply it more
consistently such that we check for landing pads *anywhere* in the
extracted code, not just in single-block extraction.

This will be used to guide decisions in passes that are planning to
eventually perform a round of code extraction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156114 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2012-05-03 22:26:53 +00:00
parent cb348b9b45
commit 9f7af7b748
2 changed files with 29 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/llvm/Transforms/Utils/FunctionUtils.h
View File

@@ -23,6 +23,14 @@ namespace llvm {
class Function;
class Loop;
/// \brief Test whether a basic block is a viable candidate for extraction.
///
/// This tests whether a particular basic block is viable for extraction into
/// a separate function. It can be used to prune code extraction eagerly
/// rather than waiting for one of the Extract* methods below to reject
/// a request.
bool isBlockViableForExtraction(const BasicBlock &BB);
/// ExtractCodeRegion - Rip out a sequence of basic blocks into a new
/// function.
///