| commit | af5cb06ec17780736749ed51cfc6dfad9397156c | |
| author | Christoph Müllner <christoph.muellner@vrull.eu> | |
| Tue, 5 Sep 2023 15:30:06 +0000 (5 17:30 +0200) | ||
| committer | Philipp Tomsich <philipp.tomsich@vrull.eu> | |
| Tue, 5 Sep 2023 16:12:23 +0000 (5 18:12 +0200) | ||
| tree | 689a0912edd4cc919e003f7545e2bd78ad014979 | treesnapshot (tar.gz zip) |
| parent | efafa66c294d261a4d964383674ab9ee51feaf88 | commitdiff |
riscv: xtheadbb: Enable constant synthesis with th.srri
Some constants can be built up using rotate-right instructions.
The code that enables this can be found in riscv_build_integer_1().
However, this functionality is only available for Zbb, which
includes the rori instruction. This patch enables this also for
XTheadBb, which includes the th.srri instruction.
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
gcc/ChangeLog:
* config/riscv/riscv.cc (riscv_build_integer_1): Enable constant
synthesis with rotate-right for XTheadBb.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/xtheadbb-li-rotr.c: New test.
Some constants can be built up using rotate-right instructions.
The code that enables this can be found in riscv_build_integer_1().
However, this functionality is only available for Zbb, which
includes the rori instruction. This patch enables this also for
XTheadBb, which includes the th.srri instruction.
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>
gcc/ChangeLog:
* config/riscv/riscv.cc (riscv_build_integer_1): Enable constant
synthesis with rotate-right for XTheadBb.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/xtheadbb-li-rotr.c: New test.
| gcc/config/riscv/riscv.cc | diffblobblamehistory | |
| gcc/testsuite/gcc.target/riscv/xtheadbb-li-rotr.c | [new file with mode: 0644] | blob |