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| author | Jingyue Wu <jingyue@google.com> | 2015-05-15 17:54:48 +0000 |
|---|---|---|
| committer | Jingyue Wu <jingyue@google.com> | 2015-05-15 17:54:48 +0000 |
| commit | 154eb5aa1d9c829715d13c9a047d4498be4d2e2a (patch) | |
| tree | 3e7a47b1737c62724e40b83a620e11141a000abc /llvm/lib/IR/Module.cpp | |
| parent | 1675b4a57f21b01e5b78f2ba95fb37945acff831 (diff) | |
| download | llvm-154eb5aa1d9c829715d13c9a047d4498be4d2e2a.zip llvm-154eb5aa1d9c829715d13c9a047d4498be4d2e2a.tar.gz llvm-154eb5aa1d9c829715d13c9a047d4498be4d2e2a.tar.bz2 | |
Add a speculative execution pass
Summary:
This is a pass for speculative execution of instructions for simple if-then (triangle) control flow. It's aimed at GPUs, but could perhaps be used in other contexts. Enabling this pass gives us a 1.0% geomean improvement on Google benchmark suites, with one benchmark improving 33%.
Credit goes to Jingyue Wu for writing an earlier version of this pass.
Patched by Bjarke Roune.
Test Plan:
This patch adds a set of tests in test/Transforms/SpeculativeExecution/spec.ll
The pass is controlled by a flag which defaults to having the pass not run.
Reviewers: eliben, dberlin, meheff, jingyue, hfinkel
Reviewed By: jingyue, hfinkel
Subscribers: majnemer, jholewinski, llvm-commits
Differential Revision: http://reviews.llvm.org/D9360
llvm-svn: 237459
Diffstat (limited to 'llvm/lib/IR/Module.cpp')
0 files changed, 0 insertions, 0 deletions