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| author | Lin Sinan <sinan.lin@linux.alibaba.com> | 2023-03-05 16:09:50 +0800 |
|---|---|---|
| committer | Kito Cheng <kito.cheng@sifive.com> | 2023-03-05 16:59:16 +0800 |
| commit | 602cfc746e9e0447221896a3d93608c6db3a89e5 (patch) | |
| tree | 4dabfecbd076403b5e8c639b06f750a2f1cbb766 /gcc/fortran/class.cc | |
| parent | 9debb240a4b1a711c0648fd9e4385dbde5ad45fd (diff) | |
| download | gcc-602cfc746e9e0447221896a3d93608c6db3a89e5.zip gcc-602cfc746e9e0447221896a3d93608c6db3a89e5.tar.gz gcc-602cfc746e9e0447221896a3d93608c6db3a89e5.tar.bz2 | |
RISC-V: Allow const0_rtx operand in max/min
Optimize cases that use max[u]/min[u] against a zero constant.
E.g., the case int f(int x) { return x >= 0 ? x : 0; }
the current asm output in rv64gc_zba_zbb
li rtmp,0
max a0,a0,rtmp
could be optimized into
max a0,a0,zero
gcc/ChangeLog:
* config/riscv/bitmanip.md: allow 0 constant in max/min
pattern.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/zbb-min-max-03.c: New test.
Diffstat (limited to 'gcc/fortran/class.cc')
0 files changed, 0 insertions, 0 deletions