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Diffstat (limited to 'docs/ReleaseNotes.rst')
| -rw-r--r-- | docs/ReleaseNotes.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst index da86be3f96ff7..6efa4813d7703 100644 --- a/docs/ReleaseNotes.rst +++ b/docs/ReleaseNotes.rst @@ -61,6 +61,13 @@ Non-comprehensive list of changes in this release with LLVM option -adce-remove-loops when the loop body otherwise has no live operations. +* The GVNHoist pass is now enabled by default. The new pass based on Global + Value Numbering detects similar computations in branch code and replaces + multiple instances of the same computation with a unique expression. The + transform benefits code size and generates better schedules. GVNHoist is + more aggressive at -Os and -Oz, hoisting more expressions at the expense of + execution time degradations. + * The llvm-cov tool can now export coverage data as json. Its html output mode has also improved. |