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| author | Andrew Trick <atrick@apple.com> | 2014-05-23 19:47:13 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2014-05-23 19:47:13 +0000 |
| commit | ab0d042a74f2e454a516be7a956b091f0ae7e1af (patch) | |
| tree | 14685ef0e158d3e5bc938ac72e66830f92f60cdf /lib/Analysis/CFGPrinter.cpp | |
| parent | 8b8e384b3cfe35093829530e1772cd1daac62b74 (diff) | |
| download | llvm-ab0d042a74f2e454a516be7a956b091f0ae7e1af.tar.gz llvm-ab0d042a74f2e454a516be7a956b091f0ae7e1af.tar.bz2 llvm-ab0d042a74f2e454a516be7a956b091f0ae7e1af.tar.xz | |
Fix and improve SCEV ComputeBackedgeTankCount.
This is a follow-up to r209358: PR19799: Indvars miscompile due to an
incorrect max backedge taken count from SCEV.
That fix was incomplete as pointed out by Arnold and Michael Z. The
code was also too confusing. It needed a careful rewrite with more
unit tests. This version will also happen to optimize more cases.
<rdar://17005101> PR19799: Indvars miscompile...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209545 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/CFGPrinter.cpp')
0 files changed, 0 insertions, 0 deletions