| commit | 9a492fdd83d7cb09292c0a0950deed9f39eb1a0a | |
| author | Luc Van Oostenryck <luc.vanoostenryck@gmail.com> | |
| Mon, 12 Dec 2016 15:29:00 +0000 (12 16:29 +0100) | ||
| committer | Christopher Li <sparse@chrisli.org> | |
| Mon, 13 Feb 2017 01:34:45 +0000 (13 09:34 +0800) | ||
| tree | 4981926852c85c390960e94d16d15cc8319efee2 | treesnapshot (tar.gz zip) |
| parent | 2e6232a27803596dbd1517164b3f3dc2e2aa8ca7 | commitdiff |
unssa: eliminate trivial phisrc copies
A OP_PHISOURCE which is the only user of its operand
can be trivially eliminated. For example, in:
add %r6, ...
...
phisrc %rt, %r6
the phisrc can safely be eliminated if no other instruction use %r6.
With this patch it's rewritten as:
add %rt, ...
...
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Christopher Li <sparse@chrisli.org>
A OP_PHISOURCE which is the only user of its operand
can be trivially eliminated. For example, in:
add %r6, ...
...
phisrc %rt, %r6
the phisrc can safely be eliminated if no other instruction use %r6.
With this patch it's rewritten as:
add %rt, ...
...
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Christopher Li <sparse@chrisli.org>
| unssa.c | diffblobblamehistory |