Hi!
As mentioned in the PR, all traces of this warning option except these
were removed earlier, so the warning option does nothing.
The following patch removes its documentation and makes it clear it does
nothing. Bootstrapped/regtested on x86_64-linux and i686-linux, ok for
trunk/8.2?
2018-06-15 Jakub Jelinek <ja...@redhat.com>
PR middle-end/86095
* common.opt (Wunsafe-loop-optimizations): Add Ignore, remove Var,
documented as preserved for backward compatibility only.
* doc/invoke.texi: Remove -Wunsafe-loop-optimizations documentation.
--- gcc/common.opt.jj 2018-06-14 13:14:52.124948298 +0200
+++ gcc/common.opt 2018-06-15 14:29:53.824162546 +0200
@@ -646,8 +646,8 @@ Common Var(warn_null_dereference) Warnin
Warn if dereferencing a NULL pointer may lead to erroneous or undefined
behavior.
Wunsafe-loop-optimizations
-Common Var(warn_unsafe_loop_optimizations) Warning
-Warn if the loop cannot be optimized due to nontrivial assumptions.
+Common Ignore Warning
+Does nothing. Preserved for backward compatibility.
Wmissing-noreturn
Common Warning Alias(Wsuggest-attribute=noreturn)
--- gcc/doc/invoke.texi.jj 2018-06-14 13:14:49.122945691 +0200
+++ gcc/doc/invoke.texi 2018-06-15 14:30:22.102188482 +0200
@@ -323,7 +323,7 @@ Objective-C and Objective-C++ Dialects}.
-Wswitch-unreachable -Wsync-nand @gol
-Wsystem-headers -Wtautological-compare -Wtrampolines -Wtrigraphs @gol
-Wtype-limits -Wundef @gol
--Wuninitialized -Wunknown-pragmas -Wunsafe-loop-optimizations @gol
+-Wuninitialized -Wunknown-pragmas @gol
-Wunsuffixed-float-constants -Wunused -Wunused-function @gol
-Wunused-label -Wunused-local-typedefs -Wunused-macros @gol
-Wunused-parameter -Wno-unused-result @gol
@@ -6000,14 +6000,6 @@ If the stack usage is (partly) dynamic a
@end smallexample
@end itemize
-@item -Wunsafe-loop-optimizations
-@opindex Wunsafe-loop-optimizations
-@opindex Wno-unsafe-loop-optimizations
-Warn if the loop cannot be optimized because the compiler cannot
-assume anything on the bounds of the loop indices. With
-@option{-funsafe-loop-optimizations} warn if the compiler makes
-such assumptions.
-
@item -Wno-pedantic-ms-format @r{(MinGW targets only)}
@opindex Wno-pedantic-ms-format
@opindex Wpedantic-ms-format
Jakub
