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| author | Matthias Braun <matze@braunis.de> | 2015-02-06 17:49:36 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2015-02-06 17:49:36 +0000 |
| commit | 2e404597f488fd730b2cbac319c42045bd559c3e (patch) | |
| tree | 98d1414fabe40f467ba2a4eaab38c50fa05a6989 /llvm/lib/Support/CommandLine.cpp | |
| parent | 123f44a2f6c3b19cf2d0f6a233fedb6da65edebd (diff) | |
| download | bcm5719-llvm-2e404597f488fd730b2cbac319c42045bd559c3e.tar.gz bcm5719-llvm-2e404597f488fd730b2cbac319c42045bd559c3e.zip | |
InstCombine: Combine select sequences into a single select
Normalize
select(C0, select(C1, a, b), b) -> select((C0 & C1), a, b)
select(C0, a, select(C1, a, b)) -> select((C0 | C1), a, b)
This normal form may enable further combines on the And/Or and shortens
paths for the values. Many targets prefer the other but can go back
easily in CodeGen.
Differential Revision: http://reviews.llvm.org/D7399
llvm-svn: 228409
Diffstat (limited to 'llvm/lib/Support/CommandLine.cpp')
0 files changed, 0 insertions, 0 deletions
