[PATCH] D30477: [SCEV] Compute affine range in another way to avoid bitwidth extending.

[Michael Zolotukhin via Phabricator via llvm-commits]

mzolotukhin added a comment.

As expected, runtime performance didn't change for SPECINT2006 (I tried -O3), but compile time improved across all the tests:

- 464.h264ref     -11.13%
- 456.hmmer       -7.72%
- 401.bzip2       -7.47%
- 445.gobmk       -5.89%
- 473.astar       -4.50%
- 462.libquantum  -4.29%
- 429.mcf -4.24%
- 458.sjeng       -3.38%
- 400.perlbench   -3.28%
- 403.gcc -3.26%


https://reviews.llvm.org/D30477