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| author | Takayuki 'January June' Suwa <jjsuwa_sys3175@yahoo.co.jp> | 2023-06-18 16:09:10 +0900 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2023-06-18 21:19:48 -0700 |
| commit | 7360cba833cd921631818428a851e03ea88f1e8a (patch) | |
| tree | 9f9feb29e834de09249049629a454a032ffc3c07 /gcc/tree-vectorizer.h | |
| parent | 1ce54ad8cd694a1defb9374f18607194ef702ea7 (diff) | |
| download | gcc-7360cba833cd921631818428a851e03ea88f1e8a.zip gcc-7360cba833cd921631818428a851e03ea88f1e8a.tar.gz gcc-7360cba833cd921631818428a851e03ea88f1e8a.tar.bz2 | |
xtensa: constantsynth: Add new 2-insns synthesis pattern
This patch adds a new 2-instructions constant synthesis pattern:
- A non-negative square value that root can fit into a signed 12-bit:
=> "MOVI(.N) Ax, simm12" + "MULL Ax, Ax, Ax"
Due to the execution cost of the integer multiply instruction (MULL), this
synthesis works only when the 32-bit Integer Multiply Option is configured
and optimize for size is specified.
gcc/ChangeLog:
* config/xtensa/xtensa.cc (xtensa_constantsynth_2insn):
Add new pattern for the abovementioned case.
Diffstat (limited to 'gcc/tree-vectorizer.h')
0 files changed, 0 insertions, 0 deletions