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Using -qdpcl with non-zero optimization levels
 Technote (FAQ)
 
Question
Why can't I use -qdpcl with non-zero optimization levels?
 
Answer
The -qdpcl option generates symbols, including symbols that define the beginning and end of blocks of code in the program, that tools based on the Dynamic Probe Class Library (DPCL) can use to see the structure of an executable file. Users can then use DPCL-compliant tools to examine performance information such as memory usage for object files that they have compiled with this option.
DPCL-compliant tools rely on beginning block and ending block placement in the optimized code being meaningful, but program optimization can interfere with these placements. If a non-zero optimization level is specified or implied by other options, -qdpcl will be disabled. -qdpcl is not supported for any optimization level except zero.

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Cross Reference information
Segment Product Component Platform Version Edition
Software DevelopmentXL FortranCompilerAIX9.1, 10.1.1
Software DevelopmentXL C Enterprise Edition for AIXCompilerAIX7.0, 8.0
 
 

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Document information
 Product categories:
 Software
 Software Development
 Traditional Progamming Language & Compilers
 XL C Enterprise Edition for AIX
 Compiler
 Operating system(s):
  AIX
 Software version:
  7.0, 8.0, 9.0, 10.1
 Software edition:
  All
 Reference #:
  1211719
 IBM Group:
 Software Group
 Modified date:
 2009-06-26

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