emscripten-fastcomp - LLVM with the emscripten fastcomp javascript backend

Age	Commit message (Collapse)	Author
2012-08-22	Tidy up a few more uses of MF.getFunction()->getName().	David Blaikie
	Based on CR feedback from r162301 and Craig Topper's refactoring in r162347 here are a few other places that could use the same API (& in one instance drop a Function.h dependency). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162367 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-13	Count triangles and diamonds in early if-conversion.	Jakob Stoklund Olesen
	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161783 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-13	Delete dead typedef.	Jakob Stoklund Olesen
	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161782 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-13	Handle extra Tail predecessors in if-conversion.	Jakob Stoklund Olesen
	It is still possible to if-convert if the tail block has extra predecessors, but the tail phis must be rewritten instead of being removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161781 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-10	Add a proper if-conversion cost model.	Jakob Stoklund Olesen
	Detect when there is not enough available ILP, so if-conversion can't speculate instructions for free. Compute the lengthening of the critical path when inserting a select instruction that depends on the condition as well as both sides of the if. Reject conversions that would stretch the critical path by more than half a mispredict penalty. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161713 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-10	Add getTPred() and getFPred() functions.	Jakob Stoklund Olesen
	They identify the PHI predecessors in both diamonds and triangles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161689 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08	Heed -stress-early-ifcvt.	Jakob Stoklund Olesen
	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161513 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-08	Get the MispredictPenalty from MCSchedModel.	Jakob Stoklund Olesen
	Thanks, Andy! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161507 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07	Add trace accessor methods, implement primitive if-conversion heuristic.	Jakob Stoklund Olesen
	Compare the critical paths of the two traces through an if-conversion candidate. If the difference is larger than the branch brediction penalty, reject the if-conversion. If would never pay. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161433 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-30	Hook into PassManager's analysis verification.	Jakob Stoklund Olesen
	By overriding Pass::verifyAnalysis(), the pass contents will be verified by the pass manager. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160994 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-30	Add MachineTraceMetrics::verify().	Jakob Stoklund Olesen
	This function verifies the consistency of cached data in the MachineTraceMetrics analysis. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160976 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-27	Add more debug output to MachineTraceMetrics.	Jakob Stoklund Olesen
	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160905 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-26	Start scaffolding for a MachineTraceMetrics analysis pass.	Jakob Stoklund Olesen
	This is still a work in progress. Out-of-order CPUs usually execute instructions from multiple basic blocks simultaneously, so it is necessary to look at longer traces when estimating the performance effects of code transformations. The MachineTraceMetrics analysis will pick a typical trace through a given basic block and provide performance metrics for the trace. Metrics will include: - Instruction count through the trace. - Issue count per functional unit. - Critical path length, and per-instruction 'slack'. These metrics can be used to determine the performance limiting factor when executing the trace, and how it will be affected by a code transformation. Initially, this will be used by the early if-conversion pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160796 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-10	Require and preserve LoopInfo for early if-conversion.	Jakob Stoklund Olesen
	It will surely be needed by heuristics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160027 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-10	Run early if-conversion in domtree post-order.	Jakob Stoklund Olesen
	This ordering allows nested if-conversion without using a work list, and it makes it possible to update the dominator tree on the fly as well. Any erased basic blocks will always be dominated by the current post-order position, so the domtree can be pruned without invalidating the iterator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160025 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06	Add some comments suggested in code review.	Jakob Stoklund Olesen
	git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159800 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04	Fix some ascii art in a comment to not have trailing backslashes (inspiration	Matt Beaumont-Gay
	from IfConversion.cc), and fix some spelling and grammar in the surrounding prose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159699 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04	Add an experimental early if-conversion pass, off by default.	Jakob Stoklund Olesen
	This pass performs if-conversion on SSA form machine code by speculatively executing both sides of the branch and using a cmov instruction to select the result. This can help lower the number of branch mispredictions on architectures like x86 that don't have predicable instructions. The current implementation is very aggressive, and causes regressions on mosts tests. It needs good heuristics that have yet to be implemented. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159694 91177308-0d34-0410-b5e6-96231b3b80d8