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| author | Chad Rosier <mcrosier@apple.com> | 2011-11-03 21:23:39 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2011-11-03 21:23:39 +0000 |
| commit | 52d00e4815bc4c89016c9e57fbfffb6513b68c6d (patch) | |
| tree | f2e4e21bbaa8e94ebc94fa61f775361788935039 /llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp | |
| parent | 982c9762a2fd81599f0826f4082b4c4fc5c6932f (diff) | |
| download | bcm5719-llvm-52d00e4815bc4c89016c9e57fbfffb6513b68c6d.tar.gz bcm5719-llvm-52d00e4815bc4c89016c9e57fbfffb6513b68c6d.zip | |
Parse the warning options twice. The first pass sets diagnostic state, while
the second pass reports warnings/errors. This has the effect that we follow
the more canonical "last option wins" paradigm when there are conflicting
options.
rdar://10383776
Previously, we parsed the warning options in order. This caused non-intuitive
behavior:
1) clang test.c -Wnosuchwarning -Wno-unknown-warning-option
Before:
warning: unknown warning option '-Wnosuchwarning' [-Wunknown-warning-option]
1 warning generated.
After:
[0 warning generated.]
2) clang test.c -Wnosuchwarning -Werror=unknown-warning-option
Before:
warning: unknown warning option '-Wnosuchwarning' [-Wunknown-warning-option]
1 warning generated.
After:
error: unknown warning option '-Wnosuchwarning' [-Werror,-Wunknown-warning-option]
3) clang test.c -Werror=unknown-warning-option -Wnosuchwarning -Wno-error=unknown-warning-option -Wnosuchwarning
Before:
error: unknown warning option '-Wnosuchwarning' [-Werror,-Wunknown-warning-option]
warning: unknown warning option '-Wnosuchwarning' [-Wunknown-warning-option]
After:
warning: unknown warning option '-Wnosuchwarning' [-Wunknown-warning-option]
warning: unknown warning option '-Wnosuchwarning' [-Wunknown-warning-option]
2 warnings generated.
4) clang test.c -Werror=unknown-warning-option -Wnosuchwarning -Wno-error=unknown-warning-option -Wno-unknown-warning-option -Wnosuchwarning
Before:
error: unknown warning option '-Wnosuchwarning' [-Werror,-Wunknown-warning-option]
After:
[0 warning generated.]
llvm-svn: 143657
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp')
0 files changed, 0 insertions, 0 deletions
