[llvm-branch-commits] [llvm-branch] r311539 - [RelNotes, AArch64] Mention improved instruction fusion and fun alignment.
Florian Hahn via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Wed Aug 23 02:12:41 PDT 2017
Date: Wed Aug 23 02:12:41 2017
New Revision: 311539
[RelNotes,AArch64] Mention improved instruction fusion and fun alignment.
Reviewers: t.p.northover, hans, kristof.beyls
Reviewed By: hans
Subscribers: aemerson, rengolin, llvm-commits
Differential Revision: https://reviews.llvm.org/D36965
--- llvm/branches/release_50/docs/ReleaseNotes.rst (original)
+++ llvm/branches/release_50/docs/ReleaseNotes.rst Wed Aug 23 02:12:41 2017
@@ -80,6 +80,14 @@ Changes to the LLVM IR
Changes to the Arm Targets
+During this release the AArch64 target has:
+* Made instruction fusion more aggressive, resulting in speedups
+ for code making use of AArch64 AES instructions. AES fusion has been
+ enabled for most Cortex-A cores and the AArch64MacroFusion pass was moved
+ to the generic MacroFusion pass.
+* Added preferred function alignments for most Cortex-A cores.
During this release the ARM target has:
* Improved mixed ARM/Thumb code generation. Some cases in which wrong
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