[WebAssembly] Add another possible code-size optimization to README.txt

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262740 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2016-03-04 20:09:57 +00:00
parent 99ec266022
commit a05c5de67c

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@ -106,3 +106,9 @@ WebAssemblyRegColoring and/or WebAssemblyRegRenumbering should sort registers
according to their usage frequency to maximize the usage of smaller encodings.
//===---------------------------------------------------------------------===//
When the last statement in a function body computes the return value, it can
just let that value be the exit value of the outermost block, rather than
needing an explicit return operation.
//===---------------------------------------------------------------------===//