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| author | Craig Topper <craig.topper@intel.com> | 2018-10-30 03:27:15 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2018-10-30 03:27:15 +0000 |
| commit | b293322cee173b953845ce1a68975944a4df0a72 (patch) | |
| tree | f44c8c3e1dd8e5383a4e5f9b8787c34a63411995 /lldb/source/Plugins/ScriptInterpreter/Python/PythonExceptionState.h | |
| parent | 2640795c94cad6863c66cffd30e8e217dd3ac506 (diff) | |
| download | llvm-b293322cee173b953845ce1a68975944a4df0a72.zip llvm-b293322cee173b953845ce1a68975944a4df0a72.tar.gz llvm-b293322cee173b953845ce1a68975944a4df0a72.tar.bz2 | |
[LegalizeTypes] Teach PromoteIntRes_BITCAST to better handle a bitcast with vector output type and a vector input type that needs to be widened
Summary: Previously if we had a bitcast vector output type that needs promotion and a vector input type that needs widening we would just do a stack store and load to handle the conversion. We can do a little better if we can widen the bitcast to a legal vector type the same size as the widened input type. Then we can do the bitcast between this widened type and the widened input type. Afterwards we can extract_subvector back to the original output and any_extend that. Type legalization will then circle back and handle promotion of the extract_subvector and the any_extend will just be removed. This will avoid going through the stack and allows us to remove a custom version of this legalization from X86.
Reviewers: efriedma, RKSimon
Reviewed By: efriedma
Subscribers: javed.absar, llvm-commits
Differential Revision: https://reviews.llvm.org/D53229
llvm-svn: 345567
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/PythonExceptionState.h')
0 files changed, 0 insertions, 0 deletions