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| author | Craig Topper <craig.topper@intel.com> | 2019-02-20 20:52:26 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2019-02-20 20:52:26 +0000 |
| commit | 8d9c224a8c5fc3a5a48e6406ccbfc2c2d68128b2 (patch) | |
| tree | b32ad158db8b9af503cf9e8cfdb4da61190b22f7 /lldb/packages/Python/lldbsuite/test/python_api/symbol-context/TestSymbolContext.py | |
| parent | c3b496de7abf7d43c870d092a56969a4fee5fa96 (diff) | |
| download | bcm5719-llvm-8d9c224a8c5fc3a5a48e6406ccbfc2c2d68128b2.tar.gz bcm5719-llvm-8d9c224a8c5fc3a5a48e6406ccbfc2c2d68128b2.zip | |
[SelectionDAG] Teach GetDemandedBits to look at the known zeros of the LHS when handling ISD::AND
If the LHS has known zeros, then the RHS immediate mask might have been simplified to remove those bits.
This patch adds a call to computeKnownBits to get the known zeroes to handle that possibility. I left an early out to skip the call if all of the demanded bits are set in the mask.
Differential Revision: https://reviews.llvm.org/D58464
llvm-svn: 354514
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/python_api/symbol-context/TestSymbolContext.py')
0 files changed, 0 insertions, 0 deletions
