| commit | 50e8b0c9bca6cdc57804f860ec5311b641753fbb | |
| author | Alexandre Oliva <oliva@adacore.com> | |
| Thu, 9 Dec 2021 02:37:14 +0000 (8 23:37 -0300) | ||
| committer | Alexandre Oliva <oliva@gnu.org> | |
| Thu, 9 Dec 2021 02:37:14 +0000 (8 23:37 -0300) | ||
| tree | 611ff19bef2b5e3ea11233f2c16b58f324e11503 | treesnapshot (tar.gz zip) |
| parent | 2bff91f3b4e6f697823a261222186f4b5b052e86 | commitdiff |
[PR103302] skip multi-word pre-move clobber during lra
If we emit clobbers before multi-word moves during lra, we get
confused if a copy ends up with input or output replaced with each
other: the clobber then kills the previous set, and it gets deleted.
This patch avoids emitting such clobbers when lra_in_progress.
for gcc/ChangeLog
PR target/103302
* expr.c (emit_move_multi_word): Skip clobber during lra.
for gcc/testsuite/ChangeLog
PR target/103302
* gcc.target/riscv/pr103302.c: New.
If we emit clobbers before multi-word moves during lra, we get
confused if a copy ends up with input or output replaced with each
other: the clobber then kills the previous set, and it gets deleted.
This patch avoids emitting such clobbers when lra_in_progress.
for gcc/ChangeLog
PR target/103302
* expr.c (emit_move_multi_word): Skip clobber during lra.
for gcc/testsuite/ChangeLog
PR target/103302
* gcc.target/riscv/pr103302.c: New.
| gcc/expr.c | diffblobblamehistory | |
| gcc/testsuite/gcc.target/riscv/pr103302.c | [new file with mode: 0644] | blob |