Instruments a program for profiling.
Windows: General > PGO Phase
IA-32 architecture, Intel® 64 architecture, IA-64 architecture
| Linux and Mac OS: | -prof-gen -prof-genx |
| Windows: | /Qprof-gen /Qprof-genx |
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| OFF | Programs are not instrumented for profiling. |
This option instruments a program for profiling to get the execution count of each basic block. It also creates a new static profile information file (.spi).
If -prof-genx or /Qprof-genx is specified, extra information (source position) is gathered for code-coverage tools. If you do not use a code-coverage tool, this option may slow parallel compile times.
If you are doing a parallel make, this option will not affect it.
These options are used in phase 1 of the Profile Guided Optimizer (PGO) to instruct the compiler to produce instrumented code in your object files in preparation for instrumented execution.
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