diff options
| author | Bjorn Pettersson <bjorn.a.pettersson@ericsson.com> | 2019-04-15 07:19:11 +0000 |
|---|---|---|
| committer | Bjorn Pettersson <bjorn.a.pettersson@ericsson.com> | 2019-04-15 07:19:11 +0000 |
| commit | 60569363a5895561dd23dfb57b821261f8de35d6 (patch) | |
| tree | 1d869a7d530f3409fa9143bcbd96ccbe2403f694 /llvm/unittests/Support/CommandLineTest.cpp | |
| parent | abd87ff48b9e0f18970cb9b1e7258536cc3004fd (diff) | |
| download | llvm-60569363a5895561dd23dfb57b821261f8de35d6.zip llvm-60569363a5895561dd23dfb57b821261f8de35d6.tar.gz llvm-60569363a5895561dd23dfb57b821261f8de35d6.tar.bz2 | |
[SelectionDAG] Use KnownBits::computeForAddSub/computeForAddCarry
Summary:
Use KnownBits::computeForAddSub/computeForAddCarry
in SelectionDAG::computeKnownBits when doing value
tracking for addition/subtraction.
This should improve the precision of the known bits,
as we only used to make a simple estimate of known
zeroes. The KnownBits support functions are also
able to deduce bits that are known to be one in the
result.
Reviewers: spatel, RKSimon, nikic, lebedev.ri
Reviewed By: nikic
Subscribers: nikic, javed.absar, lebedev.ri, hiraditya, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D60460
llvm-svn: 358372
Diffstat (limited to 'llvm/unittests/Support/CommandLineTest.cpp')
0 files changed, 0 insertions, 0 deletions