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r253760 - in /trunk/gcc: ChangeLog testsuite/Ch...
- From: jakub at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Sat, 14 Oct 2017 18:47:14 -0000
- Subject: r253760 - in /trunk/gcc: ChangeLog testsuite/Ch...
Author: jakub
Date: Sat Oct 14 18:47:14 2017
New Revision: 253760
URL: https://gcc.gnu.org/viewcvs?rev=253760&root=gcc&view=rev
Log:
PR middle-end/62263
PR middle-end/82498
* tree-ssa-forwprop.c (simplify_rotate): Allow def_arg1[N]
to be any operand_equal_p operands. For & (B - 1) require
B to be power of 2. Recognize
(X << (Y & (B - 1))) | (X >> ((-Y) & (B - 1))) and similar patterns.
* c-c++-common/rotate-5.c (f2): New function. Move old
function to ...
(f4): ... this. Use 127 instead of 128.
(f3, f5, f6): New functions.
(main): Test all f[1-6] functions, with both 0 and 1 as
second arguments.
* c-c++-common/rotate-6.c: New test.
* c-c++-common/rotate-6a.c: New test.
* c-c++-common/rotate-7.c: New test.
* c-c++-common/rotate-7a.c: New test.
* c-c++-common/rotate-8.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/rotate-6.c
trunk/gcc/testsuite/c-c++-common/rotate-6a.c
trunk/gcc/testsuite/c-c++-common/rotate-7.c
trunk/gcc/testsuite/c-c++-common/rotate-7a.c
trunk/gcc/testsuite/c-c++-common/rotate-8.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/c-c++-common/rotate-5.c
trunk/gcc/tree-ssa-forwprop.c