| commit | b9ec52188f1eafb2901d37a57727bbf1d8bbe3ca | |
| author | Max Filippov <jcmvbkbc@gmail.com> | |
| Fri, 22 Mar 2019 03:22:03 +0000 (21 20:22 -0700) | ||
| committer | Max Filippov <jcmvbkbc@gmail.com> | |
| Fri, 22 Mar 2019 04:47:50 +0000 (21 21:47 -0700) | ||
| tree | 9fc0259f9fa49c37ef235806cc953ccb8a534e3b | treesnapshot (tar.gz zip) |
| parent | 62a172e6a77d9072bb1a18f295ce0fcf4b90a4f2 | commitdiff |
target/xtensa: fix break_dependency for repeated resources
break_dependency incorrectly handles the case of dependency on an opcode
that references the same register multiple times. E.g. the following
instruction is translated incorrectly:
{ or a2, a3, a3 ; or a3, a2, a2 }
This happens because resource indices of both dependency graph nodes are
incremented, and a copy for the second instance of the same register in
the ending node is not done.
Only increment resource index of the ending node of the dependency.
Add test.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
break_dependency incorrectly handles the case of dependency on an opcode
that references the same register multiple times. E.g. the following
instruction is translated incorrectly:
{ or a2, a3, a3 ; or a3, a2, a2 }
This happens because resource indices of both dependency graph nodes are
incremented, and a copy for the second instance of the same register in
the ending node is not done.
Only increment resource index of the ending node of the dependency.
Add test.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| target/xtensa/translate.c | diffblobblamehistory | |
| tests/tcg/xtensa/test_flix.S | diffblobblamehistory |