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release/21.x: [DSE] Remove uninitialized from allockind when creating dummy zeroed variant function (#149336) #149468

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release/21.x: [DSE] Remove uninitialized from allockind when creating dummy zeroed variant function (#149336) #149468

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1 change: 1 addition & 0 deletions llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2079,6 +2079,7 @@ struct DSEState {
AllocFnKind AllocKind =
Attrs.getFnAttr(Attribute::AllocKind).getAllocKind() |
AllocFnKind::Zeroed;
AllocKind &= ~AllocFnKind::Uninitialized;
Attrs =
Attrs.addFnAttribute(Ctx, Attribute::getWithAllocKind(Ctx, AllocKind))
.removeFnAttribute(Ctx, "alloc-variant-zeroed");
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/DeadStoreElimination/zeroed-missing.ll
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Expand Up @@ -12,6 +12,6 @@ define ptr @undeclared_customalloc(i64 %size, i64 %align) {
ret ptr %call
}

declare ptr @customalloc2(i64, i64) allockind("alloc") "alloc-family"="customalloc2" "alloc-variant-zeroed"="customalloc2_zeroed"
declare ptr @customalloc2(i64, i64) allockind("alloc,uninitialized") "alloc-family"="customalloc2" "alloc-variant-zeroed"="customalloc2_zeroed"
; CHECK-DAG: declare ptr @customalloc2_zeroed(i64, i64) #[[CA2ATTR:[0-9]+]]
; CHECK-DAG: attributes #[[CA2ATTR]] = { allockind("alloc,zeroed") "alloc-family"="customalloc2" }
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