This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/81741] Misoptimisation : replacing a constant field read access by a function call
- From: "aldyh at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 13 Sep 2017 17:20:51 +0000
- Subject: [Bug tree-optimization/81741] Misoptimisation : replacing a constant field read access by a function call
- Auto-submitted: auto-generated
- References: <bug-81741-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81741
--- Comment #7 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Author: aldyh
Date: Wed Sep 13 17:20:19 2017
New Revision: 252532
URL: https://gcc.gnu.org/viewcvs?rev=252532&root=gcc&view=rev
Log:
PR tree-optimization/81741
PR tree-optimization/71947
* tree-ssa-dom.c: Include tree-inline.h.
(record_temporary_equivalences): Only record SSA_NAME = SSA_NAME
equivalences if one is more expensive to compute than the other.
* tree-ssa-scopedtables.h (class const_or_copies): Make
record_const_or_copy_raw method private.
(class avail_exprs_stack): New method simplify_binary_operation.
* tree-ssa-scopedtables.c (avail_exprs_stack::lookup_avail_expr): Call
avail_exprs_stack::simplify_binary_operation as needed.
(avail_exprs_stack::simplify_binary_operation): New function.
PR tree-optimization/81741
PR tree-optimization/71947
* gcc.dg/tree-ssa/pr81741.c: New test.
* gcc.dg/tree-ssa/pr71947-7.c: New test.
* gcc.dg/tree-ssa/pr71947-8.c: New test.
* gcc.dg/tree-ssa/pr71947-9.c: New test.
* gcc.dg/tree-ssa/pr71941-1.c: Tweak expected output.
* gcc.dg/tree-ssa/pr71941-2.c: Tweak expected output.
* gcc.dg/tree-ssa/pr71941-3.c: Tweak expected output.
* gcc.dg/tree-ssa/20030922-2.c: xfail.
Added:
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr71947-7.c
- copied, changed from r252531,
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr71947-2.c
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr71947-8.c
- copied, changed from r252531,
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr71947-2.c
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr71947-9.c
- copied, changed from r252531,
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr71947-2.c
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr81741.c
Modified:
branches/range-gen2/gcc/ChangeLog
branches/range-gen2/gcc/testsuite/ChangeLog
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/20030922-2.c
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr71947-1.c
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr71947-2.c
branches/range-gen2/gcc/testsuite/gcc.dg/tree-ssa/pr71947-3.c
branches/range-gen2/gcc/tree-ssa-dom.c
branches/range-gen2/gcc/tree-ssa-scopedtables.c
branches/range-gen2/gcc/tree-ssa-scopedtables.h