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e0c4a3397f
Summary: The scan operation implemented here only works if there are contiguous ones in the executation mask that can be used to propagate the result. There are two solutions to this, one is to enter 'whole-wave-mode' and forcibly turn them back on, or to do this serially. This implementation does the latter because it's more portable, but checks to see if the parallel fast-path is applicable. Needs to be backported for correct behavior and because it fixes a failing libc test. (cherry picked from commit 6cc7ca084a5bbb7ccf606cab12065604453dde59)
LLVM libc ========= This directory and its subdirectories contain source code for llvm-libc, a retargetable implementation of the C standard library. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.