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| author | Max Filippov <jcmvbkbc@gmail.com> | 2020-12-20 02:23:12 -0800 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2020-12-20 14:02:26 -0800 |
| commit | 18e86fae2a14f78e70aae06afce6bb9853068bb1 (patch) | |
| tree | 2d06b0068acea1f9ec4a2164a6b2a3b358eb045b /gcc | |
| parent | 3621a7bb5795ad4e47b30e1a8a06f1abe2b3b036 (diff) | |
| download | gcc-18e86fae2a14f78e70aae06afce6bb9853068bb1.zip gcc-18e86fae2a14f78e70aae06afce6bb9853068bb1.tar.gz gcc-18e86fae2a14f78e70aae06afce6bb9853068bb1.tar.bz2 | |
gcc: xtensa: implement bswapsi2, bswapdi2 and helpers
2020-12-20 Max Filippov <jcmvbkbc@gmail.com>
gcc/
* config/xtensa/xtensa.md (bswapsi2, bswapdi2): New patterns.
gcc/testsuite/
* gcc.target/xtensa/bswap.c: New test.
libgcc/
* config/xtensa/lib1funcs.S (__bswapsi2, __bswapdi2): New
functions.
* config/xtensa/t-xtensa (LIB1ASMFUNCS): Add _bswapsi2 and
_bswapdi2.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/xtensa/xtensa.md | 21 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/xtensa/bswap.c | 14 |
2 files changed, 35 insertions, 0 deletions
diff --git a/gcc/config/xtensa/xtensa.md b/gcc/config/xtensa/xtensa.md index 462a724..cfb6a54 100644 --- a/gcc/config/xtensa/xtensa.md +++ b/gcc/config/xtensa/xtensa.md @@ -469,6 +469,27 @@ }) +;; Byte swap. + +(define_insn "bswapsi2" + [(set (match_operand:SI 0 "register_operand" "=&a") + (bswap:SI (match_operand:SI 1 "register_operand" "r")))] + "!optimize_size" + "ssai\t8\;srli\t%0, %1, 16\;src\t%0, %0, %1\;src\t%0, %0, %0\;src\t%0, %1, %0" + [(set_attr "type" "arith") + (set_attr "mode" "SI") + (set_attr "length" "15")]) + +(define_insn "bswapdi2" + [(set (match_operand:DI 0 "register_operand" "=&a") + (bswap:DI (match_operand:DI 1 "register_operand" "r")))] + "!optimize_size" + "ssai\t8\;srli\t%0, %D1, 16\;src\t%0, %0, %D1\;src\t%0, %0, %0\;src\t%0, %D1, %0\;srli\t%D0, %1, 16\;src\t%D0, %D0, %1\;src\t%D0, %D0, %D0\;src\t%D0, %1, %D0" + [(set_attr "type" "arith") + (set_attr "mode" "DI") + (set_attr "length" "27")]) + + ;; Negation and one's complement. (define_insn "negsi2" diff --git a/gcc/testsuite/gcc.target/xtensa/bswap.c b/gcc/testsuite/gcc.target/xtensa/bswap.c new file mode 100644 index 0000000..057a356 --- /dev/null +++ b/gcc/testsuite/gcc.target/xtensa/bswap.c @@ -0,0 +1,14 @@ +/* { dg-do compile } */ +/* { dg-options "-O1" } */ + +unsigned long f32(unsigned long v) +{ + return __builtin_bswap32(v); +} + +unsigned long long f64(unsigned long long v) +{ + return __builtin_bswap64(v); +} + +/* { dg-final { scan-assembler-times "ssai" 2 } } */ |