9775a620b0
Summary:
Control height reduction merges conditional blocks of code and reduces the
number of conditional branches in the hot path based on profiles.
if (hot_cond1) { // Likely true.
do_stg_hot1();
}
if (hot_cond2) { // Likely true.
do_stg_hot2();
}
->
if (hot_cond1 && hot_cond2) { // Hot path.
do_stg_hot1();
do_stg_hot2();
} else { // Cold path.
if (hot_cond1) {
do_stg_hot1();
}
if (hot_cond2) {
do_stg_hot2();
}
}
This speeds up some internal benchmarks up to ~30%.
Reviewers: davidxl
Reviewed By: davidxl
Subscribers: xbolva00, dmgreen, mehdi_amini, llvm-commits, mgorny
Differential Revision: https://reviews.llvm.org/D50591
llvm-svn: 341386
25 lines
508 B
CMake
25 lines
508 B
CMake
add_llvm_library(LLVMInstrumentation
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AddressSanitizer.cpp
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BoundsChecking.cpp
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CGProfile.cpp
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ControlHeightReduction.cpp
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DataFlowSanitizer.cpp
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GCOVProfiling.cpp
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MemorySanitizer.cpp
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IndirectCallPromotion.cpp
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Instrumentation.cpp
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InstrProfiling.cpp
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PGOInstrumentation.cpp
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PGOMemOPSizeOpt.cpp
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SanitizerCoverage.cpp
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ThreadSanitizer.cpp
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EfficiencySanitizer.cpp
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HWAddressSanitizer.cpp
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ADDITIONAL_HEADER_DIRS
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${LLVM_MAIN_INCLUDE_DIR}/llvm/Transforms
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DEPENDS
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intrinsics_gen
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)
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