diff options
| author | Craig Topper <craig.topper@intel.com> | 2018-10-12 19:37:49 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2018-10-12 19:37:49 +0000 |
| commit | 1bb0c6041afaa2570a4dd943146d31e7d66e4590 (patch) | |
| tree | 92c6020aea939bb36f6a3d79649de1569813f17c /lldb/packages/Python/lldbsuite/test/configuration.py | |
| parent | 05f014a684a013a7f3504c62c4fde2f286cc6e80 (diff) | |
| download | bcm5719-llvm-1bb0c6041afaa2570a4dd943146d31e7d66e4590.tar.gz bcm5719-llvm-1bb0c6041afaa2570a4dd943146d31e7d66e4590.zip | |
[LegalizeVectorTypes] When widening the operands to a concat_vectors, see if we can use the widened operand 0 if the width matches and the other operands are undef.
This saves a conversion to extracts and build_vector. We already do this when both the result and the input need to be widened to the same type.
This changed the sse-intrinsics-fast-isel test because we don't lower (insert_vector_elt (scalar_to_vector X), Y, 1) well. We turn it into (vector_shuffle (scalar_to_vector X), (scalar_to_vector Y), <0, 4, 2, 3>) losing track of the fact that the upper elts could be undef.
We should probably find a way to prevent the scalarization of the <2 x f32> load on these tests.
llvm-svn: 344404
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/configuration.py')
0 files changed, 0 insertions, 0 deletions
