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Go patch committed: Handle nil checks with set-and-use temporaries

From: Ian Lance Taylor <iant at golang dot org>
To: gcc-patches <gcc-patches at gcc dot gnu dot org>, "gofrontend-dev at googlegroups dot com" <gofrontend-dev at googlegroups dot com>
Date: Wed, 6 Dec 2017 05:32:12 -0800
Subject: Go patch committed: Handle nil checks with set-and-use temporaries
Authentication-results: sourceware.org; auth=none

This patch by Than McIntosh changes the Go frontend code in
Unary_expression::do_get_backend that introduces explicit nil checks
for dereference operations to special case set-and-use-temporary
expressions. For this case it is better to generate an explicit
reference of the temp in the final conditional (avoids introducing
tree sharing).  Bootstrapped and ran Go testsuite on
x86_64-pc-linux-gnu.  Committed to mainline.

Ian

Attachment: patch.txt
Description: Text document

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