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| author | Li Wei <liwei@loongson.cn> | 2023-11-28 15:38:37 +0800 |
|---|---|---|
| committer | Lulu Cheng <chenglulu@loongson.cn> | 2023-12-02 16:49:44 +0800 |
| commit | a68ae55883113c10320b164738eebadaf08df5b0 (patch) | |
| tree | 52dd9e8eac212b64d630182653e6368d4f076968 /gcc/ada/gcc-interface/utils.cc | |
| parent | ccc77027576ca7591766557a350b7917a62c8c5f (diff) | |
| download | gcc-a68ae55883113c10320b164738eebadaf08df5b0.zip gcc-a68ae55883113c10320b164738eebadaf08df5b0.tar.gz gcc-a68ae55883113c10320b164738eebadaf08df5b0.tar.bz2 | |
LoongArch: Accelerate optimization of scalar signed/unsigned popcount.
In LoongArch, the vector popcount has corresponding instructions, while
the scalar does not. Currently, the scalar popcount is calculated
through a loop, and the value of a non-power of two needs to be iterated
several times, so the vector popcount instruction is considered for
optimization.
gcc/ChangeLog:
* config/loongarch/loongarch.md (v2di): Used to simplify the
following templates.
(popcount<mode>2): New.
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/popcnt.c: New test.
* gcc.target/loongarch/popcount.c: New test.
Diffstat (limited to 'gcc/ada/gcc-interface/utils.cc')
0 files changed, 0 insertions, 0 deletions