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| author | liuhongt <hongtao.liu@intel.com> | 2022-04-27 16:24:44 +0800 |
|---|---|---|
| committer | liuhongt <hongtao.liu@intel.com> | 2022-05-09 21:21:32 +0800 |
| commit | fcda0efccad41eba9134c1bd9d024a93d93fb82f (patch) | |
| tree | c194330658a2754b92a252b80699c174472a80a1 /gcc/cp/lambda.cc | |
| parent | addedd48e805edcf555c4fef80e531cd7dbf0c45 (diff) | |
| download | gcc-fcda0efccad41eba9134c1bd9d024a93d93fb82f.zip gcc-fcda0efccad41eba9134c1bd9d024a93d93fb82f.tar.gz gcc-fcda0efccad41eba9134c1bd9d024a93d93fb82f.tar.bz2 | |
Implement permutation with pslldq + psrldq + por when pshufb is not available.
pand/pandn may be used to clear upper/lower bits of the operands, in
that case there will be 4-5 instructions for permutation, and it's
still better than scalar codes.
gcc/ChangeLog:
PR target/105354
* config/i386/i386-expand.cc
(expand_vec_perm_pslldq_psrldq_por): New function.
(ix86_expand_vec_perm_const_1): Try
expand_vec_perm_pslldq_psrldq_por for both 3-instruction and
4/5-instruction sequence.
gcc/testsuite/ChangeLog:
* gcc.target/i386/pr105354-1.c: New test.
* gcc.target/i386/pr105354-2.c: New test.
Diffstat (limited to 'gcc/cp/lambda.cc')
0 files changed, 0 insertions, 0 deletions