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Don't use GT_ARR_ELEM as a location/value #54780

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Merged
BruceForstall merged 2 commits into from
Jul 8, 2021
Merged

Don't use GT_ARR_ELEM as a location/value #54780

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767c36d
Don't use GT_ARR_ELEM as a location
SingleAccretion Jun 26, 2021
fd8421a
Clarify the purpose of GenTreeArrElem
SingleAccretion Jul 8, 2021
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Don't use GT_ARR_ELEM as a location 
It represents an address.

No diffs.
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@SingleAccretion
SingleAccretion committed Jul 8, 2021
commit 767c36de3ec6db2d88d4d974bb25534dd12f4c86
7 changes: 0 additions & 7 deletions src/coreclr/jit/assertionprop.cpp
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Expand Up @@ -1197,13 +1197,6 @@ AssertionIndex Compiler::optCreateAssertion(GenTree* op1,
toType = op2->gtType;
goto SUBRANGE_COMMON;

case GT_ARR_ELEM:

/* Assigning the result of an indirection into a LCL_VAR, see if we can add a subrange assertion */

toType = op2->gtType;
goto SUBRANGE_COMMON;

case GT_LCL_FLD:

/* Assigning the result of an indirection into a LCL_VAR, see if we can add a subrange assertion */
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1 change: 0 additions & 1 deletion src/coreclr/jit/gcinfo.cpp
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Expand Up @@ -272,7 +272,6 @@ GCInfo::WriteBarrierForm GCInfo::gcIsWriteBarrierCandidate(GenTree* tgt, GenTree
case GT_LEA:
return gcWriteBarrierFormFromTargetAddress(tgt->AsAddrMode()->Base());

case GT_ARR_ELEM: /* Definitely in the managed heap */
case GT_CLS_VAR:
return WBF_BarrierUnchecked;

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1 change: 0 additions & 1 deletion src/coreclr/jit/morph.cpp
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Expand Up @@ -639,7 +639,6 @@ GenTree* Compiler::fgMorphCast(GenTree* tree)
case GT_IND:
case GT_CLS_VAR:
case GT_LCL_FLD:
case GT_ARR_ELEM:
oper->gtType = dstType;
// We're changing the type here so we need to update the VN;
// in other cases we discard the cast without modifying oper
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