Difference between revisions of "LDC LLVM profiling instrumentation"
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== LLVM intrinsics == | == LLVM intrinsics == | ||
| − | + | These intrinsics were introduced with [http://reviews.llvm.org/rL223672 LLVM commit r223672], and Clang was modified to use them in [http://reviews.llvm.org/rL223683 Clang commit r223683]. | |
LLVM features two intrinsics for instrumentation: | LLVM features two intrinsics for instrumentation: | ||
* [http://llvm.org/docs/LangRef.html#llvm-instrprof-increment-intrinsic |llvm.instrprof_increment] | * [http://llvm.org/docs/LangRef.html#llvm-instrprof-increment-intrinsic |llvm.instrprof_increment] | ||
* [http://llvm.org/docs/LangRef.html#llvm-instrprof-value-profile-intrinsic |llvm.instrprof_value_profile] | * [http://llvm.org/docs/LangRef.html#llvm-instrprof-value-profile-intrinsic |llvm.instrprof_value_profile] | ||
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== Example of Clang's LLVM IR output == | == Example of Clang's LLVM IR output == | ||
[show minimal C code example and Clang's -emit-llvm output for it] | [show minimal C code example and Clang's -emit-llvm output for it] | ||
Revision as of 14:22, 21 November 2015
This page functions as a place to collect information and to document how the implementation in LDC is done.
LLVM InstrProf
[describe what and how LLVM supports profile instrumentation]
LLVM intrinsics
These intrinsics were introduced with LLVM commit r223672, and Clang was modified to use them in Clang commit r223683.
LLVM features two intrinsics for instrumentation:
Example of Clang's LLVM IR output
[show minimal C code example and Clang's -emit-llvm output for it]
