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| author | Bill Wendling <isanbard@gmail.com> | 2011-05-04 23:40:14 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2011-05-04 23:40:14 +0000 |
| commit | 3f58a513e19fba487cb8416492456e9ade7db32e (patch) | |
| tree | 6f61e86a56aeb39545ee6d5e4da54c5b00210dad /docs | |
| parent | 2169ad8c60c9d4fcc3665836be6c5f9302b1c4ec (diff) | |
Document the automatic alias printing of InstAliases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130889 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/CodeGenerator.html | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/docs/CodeGenerator.html b/docs/CodeGenerator.html index 9185563323..60f42607f0 100644 --- a/docs/CodeGenerator.html +++ b/docs/CodeGenerator.html @@ -2019,6 +2019,11 @@ def : InstAlias<"fcomi $reg", (COM_FIr RST:$reg)>; <p>Instruction aliases can also have a Requires clause to make them subtarget specific.</p> +<p>If the back-end supports it, the instruction printer can automatically emit + the alias rather than what's being aliased. It typically leads to better, + more readable code. If it's better to print out what's being aliased, then + pass a '0' as the third parameter to the InstAlias definition.</p> + </div> </div> |