[llvm] r195812 - [docs] Mention gotcha regarding implicit BB numbering
silvas at purdue.edu
Tue Nov 26 20:55:23 PST 2013
Date: Tue Nov 26 22:55:23 2013
New Revision: 195812
[docs] Mention gotcha regarding implicit BB numbering
Impetus for the clarification by Mikael Lyngvig.
--- llvm/trunk/docs/LangRef.rst (original)
+++ llvm/trunk/docs/LangRef.rst Tue Nov 26 22:55:23 2013
@@ -128,7 +128,9 @@ lexical features of LLVM:
#. Unnamed temporaries are created when the result of a computation is
not assigned to a named value.
#. Unnamed temporaries are numbered sequentially (using a per-function
- incrementing counter, starting with 0).
+ incrementing counter, starting with 0). Note that basic blocks are
+ included in this numbering. For example, if the entry basic block is not
+ given a label name, then it will get number 0.
It also shows a convention that we follow in this document. When
demonstrating instructions, we will follow an instruction with a comment
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