[LangRef] callbr result can be used in all successors #91167
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Originally, the callbr result could only be used on the fallthrough destination. This limitation has been lifted, and the result is now also available on the indirect destinations. However, LangRef was not updated to reflect this.
|
@llvm/pr-subscribers-llvm-ir Author: Nikita Popov (nikic) ChangesOriginally, the callbr result could only be used on the fallthrough destination. This limitation has been lifted, and the result is now also available on the indirect destinations. However, LangRef was not updated to reflect this. Full diff: https://github.com/llvm/llvm-project/pull/91167.diff 1 Files Affected:
diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index 6291a4e57919a5..95937ffd062c6d 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -9113,8 +9113,8 @@ instruction in most regards. The primary difference is that it
establishes an association with additional labels to define where control
flow goes after the call.
-The output values of a '``callbr``' instruction are available only to
-the '``fallthrough``' block, not to any '``indirect``' blocks(s).
+The output values of a '``callbr``' instruction are available both on the
+the '``fallthrough``' block, and any '``indirect``' blocks(s).
The only use of this today is to implement the "goto" feature of gcc inline
assembly where additional labels can be provided as locations for the inline
|
Co-authored-by: Eli Friedman <efriedma@quicinc.com>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Originally, the callbr result could only be used on the fallthrough destination. This limitation has been lifted, and the result is now also available on the indirect destinations. However, LangRef was not updated to reflect this.