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The mystery of Olden/tsp solved, and more opportunities for speedup.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18932 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Brian Gaeke
2004-12-14 09:10:10 +00:00
parent 6b260e2638
commit 5761805d27
2 changed files with 12 additions and 0 deletions
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6
lib/Target/Sparc/README.txt
View File

@@ -68,5 +68,11 @@ To-do
* We can fold small constant offsets into the %hi/%lo references to constant * We can fold small constant offsets into the %hi/%lo references to constant
pool addresses as well. pool addresses as well.
* Directly support select instructions, and fold setcc instructions into them
where possible. I think this is what afflicts the inner loop of Olden/tsp
(hot block = tsp():no_exit.1.i, overall GCC/LLC = 0.03).
* Generate fsqrtd for calls to sqrt() (~ 4% speedup on Olden/tsp).
$Date$ $Date$

6
lib/Target/SparcV8/README.txt
View File

@@ -68,5 +68,11 @@ To-do
* We can fold small constant offsets into the %hi/%lo references to constant * We can fold small constant offsets into the %hi/%lo references to constant
pool addresses as well. pool addresses as well.
* Directly support select instructions, and fold setcc instructions into them
where possible. I think this is what afflicts the inner loop of Olden/tsp
(hot block = tsp():no_exit.1.i, overall GCC/LLC = 0.03).
* Generate fsqrtd for calls to sqrt() (~ 4% speedup on Olden/tsp).
$Date$ $Date$