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Do not align cloned loops #48090

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Merged
merged 2 commits into from
Feb 11, 2021
Merged

Do not align cloned loops #48090

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6181357
Do not align cloned loops
kunalspathak Feb 10, 2021
fc20073
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kunalspathak Feb 10, 2021
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Do not align cloned loops
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@kunalspathak
kunalspathak committed Feb 10, 2021
commit 61813576c0be8910783baff83c613105666ffbff
6 changes: 6 additions & 0 deletions src/coreclr/jit/emitxarch.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -9232,6 +9232,12 @@ void emitter::emitDispIns(
break;

case IF_NONE:
#if FEATURE_LOOP_ALIGN
if (ins == INS_align)
{
printf("[%d bytes]", id->idCodeSize());
}
#endif
break;

default:
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9 changes: 9 additions & 0 deletions src/coreclr/jit/optimizer.cpp
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Expand Up @@ -5319,6 +5319,15 @@ void Compiler::optCloneLoop(unsigned loopInd, LoopCloneContext* context)
// checked them to guarantee they are clonable.
bool cloneOk = BasicBlock::CloneBlockState(this, newBlk, blk);
noway_assert(cloneOk);

#if FEATURE_LOOP_ALIGN
if (blk->isLoopAlign())
{
newBlk->bbFlags &= ~BBF_LOOP_ALIGN;
JITDUMP("Removing LOOP_ALIGN flag from cloned loop in " FMT_BB "\n", newBlk->bbNum);
}
#endif

// TODO-Cleanup: The above clones the bbNatLoopNum, which is incorrect. Eventually, we should probably insert
// the cloned loop in the loop table. For now, however, we'll just make these blocks be part of the surrounding
// loop, if one exists -- the parent of the loop we're cloning.
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