| commit | b26b888c0e703aa2bc6ee7fa4f81d42cde0108de | |
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Thu, 12 Apr 2018 19:30:00 +0000 (12 19:30 +0000) | ||
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Thu, 12 Apr 2018 19:30:00 +0000 (12 19:30 +0000) | ||
| tree | 7b8b11409bbb5056a857ad264f7aa8c215986189 | treesnapshot (tar.gz zip) |
| parent | 91cef64e14b8155723acd6e0f6617b7cb7156eb2 | commitdiff |
PR debug/83157
* var-tracking.c (add_stores): Handle STRICT_LOW_PART SET_DEST.
* cselib.c (cselib_record_sets): For STRICT_LOW_PART dest,
lookup if dest in some wider mode is known to be const0_rtx and
if so, record permanent equivalence for it to be ZERO_EXTEND of
the narrower mode destination.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@259353 138bc75d-0d04-0410-961f-82ee72b054a4
* var-tracking.c (add_stores): Handle STRICT_LOW_PART SET_DEST.
* cselib.c (cselib_record_sets): For STRICT_LOW_PART dest,
lookup if dest in some wider mode is known to be const0_rtx and
if so, record permanent equivalence for it to be ZERO_EXTEND of
the narrower mode destination.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@259353 138bc75d-0d04-0410-961f-82ee72b054a4
| gcc/ChangeLog | diffblobblamehistory | |
| gcc/cselib.c | diffblobblamehistory | |
| gcc/var-tracking.c | diffblobblamehistory |