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| author | bors <bors@rust-lang.org> | 2016-09-03 17:41:08 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2016-09-03 17:41:08 -0700 |
| commit | 1ca1de6b26ec4740e3f0e8bead7002589024bd14 (patch) | |
| tree | 0354a4cf3e8befbd39dda472a6e57b0efc3c856b /src/rustllvm/RustWrapper.cpp | |
| parent | 70598e04f922a0f451f63cec4134bd28b31c6411 (diff) | |
| parent | f5c775274275fa34b068ddf802bd528f790f7af8 (diff) | |
| download | rust-1ca1de6b26ec4740e3f0e8bead7002589024bd14.tar.gz rust-1ca1de6b26ec4740e3f0e8bead7002589024bd14.zip | |
Auto merge of #36124 - eddyb:fast-array-init, r=alexcrichton
Fix optimization regressions for operations on [x; n]-initialized arrays. Fixes #35662 by using `!=` instead of `<` as the stop condition for `[x; n]` initialization loops. Also included is https://github.com/eddyb/llvm/commit/cc2009f02d3b9a3c05be939978212e832310b3d6, a hack to run the GVN pass twice, another time after InstCombine. This hack results in removal of redundant `memset` and `memcpy` calls (from loops over arrays). cc @nrc Can we get performance numbers on this? Not sure if it regresses anything else.
Diffstat (limited to 'src/rustllvm/RustWrapper.cpp')
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