[Flang-dev] Usage of vector pgmath symbols in Flang

Varun Jayathirtha vjayathirtha at nvidia.com
Tue Sep 17 13:31:22 EDT 2019


Hi Kiran,

Vector pgmath routines are present in the Flang libraries, however the Flang front end only generates scalar pgmath calls.

The LLVM vectorizer has been modified to recognize scalar pgmath calls and generate appropriate vector calls. Here's the PR that introduced this change if you're interested:
https://github.com/flang-compiler/llvm/pull/43/files

Regards,
Varun Jayathirtha

From: flang-dev <flang-dev-bounces at lists.flang-compiler.org> On Behalf Of Kiran Chandramohan
Sent: Friday, September 13, 2019 7:11 AM
To: flang-dev at lists.flang-compiler.org; flang-dev at lists.llvm.org
Subject: [Flang-dev] Usage of vector pgmath symbols in Flang

Hi,

Are vector pgmath symbols called directly in Flang? Are they directly used in the Flang libraries?

As far as I understand it is scalar pgmath symbols that are always generated by Flang and these are then converted to vector symbols by veclib in LLVM.

Thanks,
Kiran
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