| Number | 380
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| Category | errata
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| Synopsis | 12.1.3: should allow tasks/functions in generate loops
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| State | lrmdraft
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| Class | errata-discuss
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| Arrival-Date | Jul 09 2003
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| Originator | sharp@cadence.com
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| Release | 2001b: 12.1.3
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| Environment |
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| Description |
Section 12.1.3 says that task and function declarations are not allowed in a generate loop. There is no reason to restrict this. I can only assume that people saw no need for having a task or function be repetitively declared because they assumed all callers could share a single function. This reasoning is faulty, since it assumes that all of the tasks or functions would be equivalent. This is not necessarily the case. The declarations of the task or function in different instances of a loop could be different because of different genvar values. For example, different instances of a generate loop might create vectors of increasing width in each instance, requiring a function of corresponding width for each instance. Or you might have nothing but function declarations in the generate loop, generating families of functions that operate on different widths. There may be other situations where this is useful as well. I don't see any benefit to this restriction, and it prevents some potentially useful constructs. The restriction should be removed. |
| Fix |
In 12.1.3, paragraph 8, delete the phrase ", however not in a generate loop" from the sentence: "Task and function declarations shall also be permitted within the generate scope, however not in a generate loop." |
| Audit-Trail |
From: Shalom Bresticker <Shalom.Bresticker@motorola.com> To: etf-bugs@boyd.com Cc: Subject: Re: errata/380: should allow tasks/functions in generate loops Date: Thu, 10 Jul 2003 11:20:31 +0300 Steven brought this up in July 1999 in http://boydtechinc.com/btf/archive/btf_1999/0663.html , but there does not seem to have been any discussion of it. I also found that this restriction was introduced into the draft wording of this section during July 1998, originally it was not there, but I did not find any discussion why this was done. Shalom Fix replaced by Shalom.Bresticker@motorola.com on Thu Nov 13 08:37:31 2003 In 12.1.3, paragraph 8, delete the phrase ", however not in a generate loop" from the sentence: "Task and function declarations shall also be permitted within the generate scope, however not in a generate loop." |
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