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| author | Dan Gohman <gohman@apple.com> | 2010-04-29 16:57:54 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-04-29 16:57:54 +0000 |
| commit | 5768ea9ca1409d7686b64607d6e0ad87d9d84c23 (patch) | |
| tree | fd290ada85fbf801182294c38a4f111d11c140c6 /include | |
| parent | 8ae93e77e83d796030d334b6a9b1b48efd170687 (diff) | |
| download | external_llvm-5768ea9ca1409d7686b64607d6e0ad87d9d84c23.zip external_llvm-5768ea9ca1409d7686b64607d6e0ad87d9d84c23.tar.gz external_llvm-5768ea9ca1409d7686b64607d6e0ad87d9d84c23.tar.bz2 | |
Elaborate on a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102637 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/CodeGen/ISDOpcodes.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/llvm/CodeGen/ISDOpcodes.h b/include/llvm/CodeGen/ISDOpcodes.h index eb922e9..ba554d3 100644 --- a/include/llvm/CodeGen/ISDOpcodes.h +++ b/include/llvm/CodeGen/ISDOpcodes.h @@ -95,8 +95,11 @@ namespace ISD { // execution to HANDLER. Many platform-related details also :) EH_RETURN, - // TargetConstant* - Like Constant*, but the DAG does not do any folding or - // simplification of the constant. + // TargetConstant* - Like Constant*, but the DAG does not do any folding, + // simplification, or lowering of the constant. They are used for constants + // which are known to fit in the immediate fields of their users, or for + // carrying magic numbers which are not values which need to be materialized + // in registers. TargetConstant, TargetConstantFP, |