https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118280
Gopi Kumar Bulusu <gopi at sankhya dot com> changed:
What |Removed |Added
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CC| |gopi at sankhya dot com
--- Comment #25 from Gopi Kumar Bulusu <gopi at sankhya dot com> ---
Created attachment 61903
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61903&action=edit
Revised patch for the issue
Atomic support enhanced to fix existing atomic_compare_and_swapsi pattern
to handle side effects; new patterns atomic_fetch_op and atomic_test_and_set
added. As MicroBlaze has no QImode test/set instruction, use shift magic
to implement atomic_test_and_set. This fixes PR118280.
With this patch g++ compiler can be used to build programs.
In particular - this libstdc++ test case (which failed build/execution without
the patch) builds and runs correctly after the patch
PASS: 29_atomics/atomic_flag/clear/1.cc -std=gnu++17 execution test
