Warn when a variable is unused
Wcoverage-mismatch
-Common RejectNegative Var(warn_coverage_mismatch) Warning
-Warn instead of error in case profiles in -fprofile-use do not match
+Common Var(warn_coverage_mismatch) Init(1) Warning
+Warn in case profiles in -fprofile-use do not match
aux-info
Common Separate
Common Report Var(flag_ipa_reference) Init(0) Optimization
Discover readonly and non addressable static variables
-fipa-type-escape
-Common Report Var(flag_ipa_type_escape) Init(0) Optimization
-Type based escape and alias analysis
-
fipa-matrix-reorg
Common Report Var(flag_ipa_matrix_reorg) Optimization
Perform matrix layout flattening and transposing based
Common
Does nothing. Preserved for backward compatibility.
+fzee
+Common Report Var(flag_zee) Init(0)
+Eliminate redundant zero extensions on targets that support implicit extensions.
+
fshow-column
Common C ObjC C++ ObjC++ Report Var(flag_show_column) Init(1)
Show column numbers in diagnostics, when available. Default on
Construct webs and split unrelated uses of single variable
fwhopr
-Common Var(flag_whopr)
-Enable partitioned link-time optimization.
+Common
+Enable partitioned link-time optimization
+
+fwhopr=
+Common RejectNegative UInteger Joined Var(flag_whopr)
+Enable partitioned link-time optimization with specified number of parallel jobs
ftree-builtin-call-dce
Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization