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| author | Nadav Rotem <nrotem@apple.com> | 2012-09-06 09:17:37 +0000 |
|---|---|---|
| committer | Nadav Rotem <nrotem@apple.com> | 2012-09-06 09:17:37 +0000 |
| commit | c05d30601ced172b55be81bb529df6be91d6ae15 (patch) | |
| tree | 4d0557ea0f15a6136fdfef2f93ec4abcaad662fd /docs | |
| parent | 6c822eea47dbef96940819b1ea085fabc49a1e71 (diff) | |
Add a new optimization pass: Stack Coloring, that merges disjoint static allocations (allocas). Allocas are known to be
disjoint if they are marked by disjoint lifetime markers (@llvm.lifetime.XXX intrinsics).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163299 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ReleaseNotes.html | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html index e31bad77475..75a6fd1ca10 100644 --- a/docs/ReleaseNotes.html +++ b/docs/ReleaseNotes.html @@ -499,6 +499,13 @@ Release Notes</a>.</h1> <div> +<p>Stack Coloring - We have implemented a new optimization pass + to merge stack objects which are used in disjoin areas of the code. + This optimization reduces the required stack space significantly, in cases + where it is clear to the optimizer that the stack slot is not shared. + We use the lifetime markers to tell the codegen that a certain alloca + is used within a region.</p> + <p>We have put a significant amount of work into the code generator infrastructure, which allows us to implement more aggressive algorithms and make it run faster:</p> |