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Remove Negative(gwarf-) from gdwarf

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Prior to the removal of STABS support the gdwarf, gstabs, ... options
formed a cycle with their Negative(..) option attribute.  But that
didn't actually have any effect since most of the options also
are Joined or JoinedOrMissing for which there's no pruning of options
and so once ran into the set_debug_level diagnostics reporting
conflicting debug formats.

The following removes the remains of that cycle, which is a
Negative option from gdwarf to gdwarf-.  With RejectNegative
added the expected effect of -gdwarf-4 -gdwarf would be to
enable DWARF5 support (but this doesn't happen for some reason).
I think the more sensible behavior is that seen and implemented
in opts.cc, the more specific -gdwarf-4 determines the DWARF level
and a later or earlier -gdwarf becomes a no-op.  So the
Negative(..) annotation on gdwarf is just confusing.

	* common.opt (gdwarf): Remove Negative(gdwarf-).
This commit is contained in:
Richard Biener 2023-03-24 10:19:55 +01:00
parent cc4b7d6bb3
commit 33312336d5
1 changed files with 1 additions and 1 deletions
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gcc/common.opt
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@ -3349,7 +3349,7 @@ Common Driver RejectNegative JoinedOrMissing
Generate BTF debug information at default level.
gdwarf
Common Driver JoinedOrMissing Negative(gdwarf-) RejectNegative
Common Driver JoinedOrMissing RejectNegative
Generate debug information in default version of DWARF format.
gdwarf-