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| author | David Majnemer <david.majnemer@gmail.com> | 2016-04-14 07:13:24 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2016-04-14 07:13:24 +0000 |
| commit | 0f26b0aeb4a91418d4c273bb25ab22f3b416a960 (patch) | |
| tree | f4a1cfadf86bfb6a4a6aa20c9df02cea75ebfbef /lldb/packages/Python/lldbsuite/test/functionalities/plugins/commands/TestPluginCommands.py | |
| parent | d871531687b062862234a3346b50f1824e27ed3b (diff) | |
| download | bcm5719-llvm-0f26b0aeb4a91418d4c273bb25ab22f3b416a960.tar.gz bcm5719-llvm-0f26b0aeb4a91418d4c273bb25ab22f3b416a960.zip | |
[CodeGen] Teach LLVM how to lower @llvm.{min,max}num to {MIN,MAX}NAN
The behavior of {MIN,MAX}NAN differs from that of {MIN,MAX}NUM when only
one of the inputs is NaN: -NUM will return the non-NaN argument while
-NAN would return NaN.
It is desirable to lower to @llvm.{min,max}num to -NAN if they don't
have a native instruction for -NUM. Notably, ARMv7 NEON's vmin has the
-NAN semantics.
N.B. Of course, it is only safe to do this if the intrinsic call is
marked nnan.
llvm-svn: 266279
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/functionalities/plugins/commands/TestPluginCommands.py')
0 files changed, 0 insertions, 0 deletions
