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Remove item: thumb padding in constant islands

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36586 91177308-0d34-0410-b5e6-96231b3b80d8
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Dale Johannesen 2007-04-30 00:32:06 +00:00
parent 23c968478e
commit 9118dbc7bd
1 changed files with 2 additions and 6 deletions
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lib/Target/ARM/README.txt
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@ -35,14 +35,10 @@ but there is unlikely to be much improvement in the generated code.
1. There may be some advantage to trying to be smarter about the initial
placement, rather than putting everything at the end.
2. The handling of 2-byte padding for Thumb is overly conservative. There
would be a small gain to keeping accurate track of the padding (which would
require aligning functions containing constant pools to 4-byte boundaries).
3. There might be some compile-time efficiency to be had by representing
2. There might be some compile-time efficiency to be had by representing
consecutive islands as a single block rather than multiple blocks.
4. Use a priority queue to sort constant pool users in inverse order of
3. Use a priority queue to sort constant pool users in inverse order of
position so we always process the one closed to the end of functions
first. This may simply CreateNewWater.