diff options
| author | Stephen Hines <srhines@google.com> | 2012-09-10 16:47:31 -0700 |
|---|---|---|
| committer | Stephen Hines <srhines@google.com> | 2012-09-10 16:47:31 -0700 |
| commit | 1c4ad5ef4fab105f0c8af7edd026e00502fb6279 (patch) | |
| tree | cb5bdfd58f776d00be450d0a5585f8f0186585da /docs/ReleaseNotes.html | |
| parent | d62cdbe700ab288e9ad447824066edb7d17167d9 (diff) | |
| parent | 1dc2591e9ef0730612902f94976ce85bed6859de (diff) | |
| download | external_llvm-1c4ad5ef4fab105f0c8af7edd026e00502fb6279.zip external_llvm-1c4ad5ef4fab105f0c8af7edd026e00502fb6279.tar.gz external_llvm-1c4ad5ef4fab105f0c8af7edd026e00502fb6279.tar.bz2 | |
Merge branch 'upstream' into merge-2012_09_10
Conflicts:
lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
lib/Support/DynamicLibrary.cpp
lib/Support/LockFileManager.cpp
Change-Id: I91e94c3a7a76e19c688307c5a480a640a3bd2b7e
Diffstat (limited to 'docs/ReleaseNotes.html')
| -rw-r--r-- | docs/ReleaseNotes.html | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html index 1ab2b70..75a6fd1 100644 --- a/docs/ReleaseNotes.html +++ b/docs/ReleaseNotes.html @@ -499,13 +499,12 @@ Release Notes</a>.</h1> <div> -<p>We have changed the way that the Type Legalizer legalizes vectors. The type - legalizer now attempts to promote integer elements. This enabled the - implementation of vector-select. Additionally, we see a performance boost on - workloads which use vectors of chars and shorts, since they are now promoted - to 32-bit types, which are better supported by the SIMD instruction set. - Floating point types are still widened as before.</p> - +<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 |