Download dir - Oracle Documentation

When running tcov, you must pass it the -x option to make it use the new style of
data. If not, tcov uses the old .d files, if any, by default for data, and produces
unexpected output.
Unlike the -xa option, the TCOVDIR environment variable has no effect at
compile-time. However, its value is used at program runtime. See tcov(1) and
Analyzing Program Performance With Sun WorkShop for more details.
Note – tcov’s code coverage report can be unreliable if there is inlining of routines
due to -xO4 or -xinline.
-xreduction
(SPARC) Turns on reduction recognition during automatic parallelization.
-xreduction must be specified with -xautopar, or -xparallel.
Parallelization options require a WorkShop license.
When reduction recognition is enabled, the compiler parallelizes reductions such as
dot products, maximum and minimum finding. These reductions yield different
roundoffs than obtained by unparallelized code.
-xregs=r
(SPARC) Specifies the usage of registers for the generated code.
r is a comma-separated list that consists of one or more of the following: [no%]appl,
[no%]float.
64
C User’s Guide • May 2000