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| author | Georg-Johann Lay <avr@gjlay.de> | 2025-04-30 08:43:51 +0200 |
|---|---|---|
| committer | Georg-Johann Lay <avr@gjlay.de> | 2025-04-30 11:31:58 +0200 |
| commit | 4dc40eddbe69566869f7aafb78c31c4850b8aeb7 (patch) | |
| tree | adc5cd8f2eb25a2b69f51d9ac1ba5c9aa0f171e3 /libjava | |
| parent | e5d1f538bb7d2c7a7a4acf4a4516fa8933dc2888 (diff) | |
| download | gcc-4dc40eddbe69566869f7aafb78c31c4850b8aeb7.zip gcc-4dc40eddbe69566869f7aafb78c31c4850b8aeb7.tar.gz gcc-4dc40eddbe69566869f7aafb78c31c4850b8aeb7.tar.bz2 | |
AVR: target/119989 - Add missing clobbers to xload_<mode>_libgcc.
libgcc's __xload_1...4 is clobbering Z (and also R21 is some cases),
but avr.md had clobbers of respective GPRs only up to reload.
Outcome was that code reading from the same __memx address twice
could be wrong. This patch adds respective clobbers.
Forward-port from 2025-04-30 r14-11703
PR target/119989
gcc/
* config/avr/avr.md (xload_<mode>_libgcc): Clobber R21, Z.
gcc/testsuite/
* gcc.target/avr/torture/pr119989.h: New file.
* gcc.target/avr/torture/pr119989-memx-1.c: New test.
* gcc.target/avr/torture/pr119989-memx-2.c: New test.
* gcc.target/avr/torture/pr119989-memx-3.c: New test.
* gcc.target/avr/torture/pr119989-memx-4.c: New test.
* gcc.target/avr/torture/pr119989-flashx-1.c: New test.
* gcc.target/avr/torture/pr119989-flashx-2.c: New test.
* gcc.target/avr/torture/pr119989-flashx-3.c: New test.
* gcc.target/avr/torture/pr119989-flashx-4.c: New test.
(cherry picked from commit 1ca1c1fc3b58ae5e1d3db4f5a2014132fe69f82a)
Diffstat (limited to 'libjava')
0 files changed, 0 insertions, 0 deletions