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| author | Justin Lebar <jlebar@google.com> | 2016-11-21 22:49:15 +0000 |
|---|---|---|
| committer | Justin Lebar <jlebar@google.com> | 2016-11-21 22:49:15 +0000 |
| commit | 3e50a5be8f5259bc256f39830e72525dd9f90626 (patch) | |
| tree | b99385ff21dbca7fb6474649ed54e31953b3cb28 /llvm/test/CodeGen | |
| parent | 838c7f5a85a96f642fea0e2167c92e32682222b6 (diff) | |
| download | bcm5719-llvm-3e50a5be8f5259bc256f39830e72525dd9f90626.tar.gz bcm5719-llvm-3e50a5be8f5259bc256f39830e72525dd9f90626.zip | |
[CodeGenPrepare] Don't sink non-cheap addrspacecasts.
Summary:
Previously, CGP would unconditionally sink addrspacecast instructions,
even going so far as to sink them into a loop.
Now we check that the cast is "cheap", as defined by TLI.
We introduce a new "is-cheap" function to TLI rather than using
isNopAddrSpaceCast because some GPU platforms want the ability to ask
for non-nop casts to be sunk.
Reviewers: arsenm, tra
Subscribers: jholewinski, wdng, llvm-commits
Differential Revision: https://reviews.llvm.org/D26923
llvm-svn: 287591
Diffstat (limited to 'llvm/test/CodeGen')
0 files changed, 0 insertions, 0 deletions
