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author | Evan Cheng <evan.cheng@apple.com> | 2009-02-11 08:24:21 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2009-02-11 08:24:21 +0000 |
commit | 752272a5e553313f7b0397a06a23b4fe8ac013c4 (patch) | |
tree | e8f806533ea4d6d3a39fe5fb5fc1f79abead66c8 /tools/lto/Makefile | |
parent | 47ac0f0c7c39289f5970688154e385be22b7f293 (diff) | |
download | llvm-752272a5e553313f7b0397a06a23b4fe8ac013c4.tar.gz llvm-752272a5e553313f7b0397a06a23b4fe8ac013c4.tar.bz2 llvm-752272a5e553313f7b0397a06a23b4fe8ac013c4.tar.xz |
Implement PR3495: local spiller optimization. The local spiller can now keep availability information over BB boundaries. It visits BB's in depth first order. After visiting a BB if it find a successor which has a single predecessor it visits the successor next without clearing the availability information. This allows the successor to omit reloads or change them into copies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64298 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/lto/Makefile')
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