LLVM with the emscripten fastcomp javascript backend https://git.amat.us/emscripten-fastcomp/atom/test/Transforms/LoopUnroll/runtime-loop2.ll?h=1.14.0 2011-12-09T06:19:40Z 2011-12-09T06:19:40Z Andrew Trick atrick@apple.com 2011-12-09T06:19:40Z urn:sha1:5d73448bb7f3d326f310e6f35030821b103b1cdb Patch by Brendon Cahoon! This extends the existing LoopUnroll and LoopUnrollPass. Brendon measured no regressions in the llvm test suite with -unroll-runtime enabled. This implementation works by using the existing loop unrolling code to unroll the loop by a power-of-two (default 8). It generates an if-then-else sequence of code prior to the loop to execute the extra iterations before entering the unrolled loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146245 91177308-0d34-0410-b5e6-96231b3b80d8