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| author | Sanjay Patel <spatel@rotateright.com> | 2014-09-03 17:40:30 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2014-09-03 17:40:30 +0000 |
| commit | 9433a28845dd2fa6953dfd44172c3986f6d9c664 (patch) | |
| tree | d94b186e1c5991a343285eaa9148fff045a9d987 /llvm/lib/Support/Debug.cpp | |
| parent | efde5a77406a96197249bdaa2d088f687dd26b69 (diff) | |
| download | bcm5719-llvm-9433a28845dd2fa6953dfd44172c3986f6d9c664.tar.gz bcm5719-llvm-9433a28845dd2fa6953dfd44172c3986f6d9c664.zip | |
Preserve IR flags (nsw, nuw, exact, fast-math) in SLP vectorizer (PR20802).
The SLP vectorizer should propagate IR-level optimization hints/flags (nsw, nuw, exact, fast-math)
when converting scalar instructions into vectors. But this isn't a simple copy - we need to take
the intersection (the logical 'and') of the sets of flags on the scalars.
The solution is further complicated because we can have non-uniform (non-SIMD) vector ops after:
http://reviews.llvm.org/D4015
http://llvm.org/viewvc/llvm-project?view=revision&revision=211339
The vast majority of changed files are existing tests that were not propagating IR flags, but I've
also added a new test file for focused testing of IR flag possibilities.
Differential Revision: http://reviews.llvm.org/D5172
llvm-svn: 217051
Diffstat (limited to 'llvm/lib/Support/Debug.cpp')
0 files changed, 0 insertions, 0 deletions
