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Improve loop unrolling documentation #52099

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merged 1 commit into from Apr 30, 2021
Merged

Improve loop unrolling documentation #52099

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11 changes: 7 additions & 4 deletions src/coreclr/jit/compiler.h
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Expand Up @@ -6246,11 +6246,11 @@ class Compiler
PhaseStatus optOptimizeLayout(); // Optimize the BasicBlock layout of the method
PhaseStatus optFindLoops(); // Finds loops and records them in the loop table

void optCloneLoops();
PhaseStatus optCloneLoops();
void optCloneLoop(unsigned loopInd, LoopCloneContext* context);
void optEnsureUniqueHead(unsigned loopInd, BasicBlock::weight_t ambientWeight);
void optUnrollLoops(); // Unrolls loops (needs to have cost info)
void optRemoveRedundantZeroInits();
PhaseStatus optUnrollLoops(); // Unrolls loops (needs to have cost info)
void optRemoveRedundantZeroInits();

protected:
// This enumeration describes what is killed by a call.
Expand Down Expand Up @@ -6580,6 +6580,10 @@ class Compiler

void optInvertWhileLoop(BasicBlock* block);

private:
static bool optIterSmallOverflow(int iterAtExit, var_types incrType);
static bool optIterSmallUnderflow(int iterAtExit, var_types decrType);

bool optComputeLoopRep(int constInit,
int constLimit,
int iterInc,
Expand All @@ -6590,7 +6594,6 @@ class Compiler
bool dupCond,
unsigned* iterCount);

private:
static fgWalkPreFn optIsVarAssgCB;

protected:
Expand Down