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Revert "[MemCpyOpt] support offset slices for performStackMoveOptzn and processMemCpy (#176436 )" (#177482 )

This reverts commit 019eb855dd6a18a8f7ae5dd86abf6bc3ad0d9fa4.

Causes miscompiles, see original PR and #177185

Fixes https://github.com/llvm/llvm-project/issues/177185

2026-01-22 22:34:35 +00:00

2008-02-24-MultipleUseofSRet.ll

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2008-03-13-ReturnSlotBitcast.ll

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2011-06-02-CallSlotOverwritten.ll

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aa-recursion-assertion-failure.ll

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aggregate-type-crash.ll

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align.ll

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atomic.ll

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byval-readnone.ll

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callslot_aa.ll

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callslot_badaa.ll

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callslot_deref.ll

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callslot_noalias.ll

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callslot_throw.ll

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callslot.ll

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capturing-func.ll

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crash.ll

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fca2memcpy.ll

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form-memset.ll

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invariant.start.ll

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lifetime-missing.ll

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lifetime.ll

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load-store-to-memcpy.ll

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loadstore-sret.ll

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memcpy-byval-forwarding-clobbers.ll

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memcpy-gep-modification.ll

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memcpy-in-loop.ll

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memcpy-invoke-memcpy.ll

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memcpy-memcpy-offset.ll

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memcpy-tbaa.ll

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memcpy-to-memset-with-lifetimes.ll

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memcpy-to-memset.ll

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memcpy-undef.ll

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memcpy-zero-size.ll

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memcpy.ll

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memmove.ll

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memset-memcpy-dbgloc.ll

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memset-memcpy-oversized.ll

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memset-memcpy-redundant-memset.ll

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memset-memcpy-to-2x-memset.ll

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memset-memmove-redundant-memmove.ll

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merge-into-memset.ll

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mixed-sizes.ll

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no-libcalls.ll

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non-integral.ll

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nonlocal-memcpy-memcpy.ll

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nontemporal.ll

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opaque-ptr.ll

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pr29105.ll

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pr37967.ll

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pr54682.ll

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pr75010.ll

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pr102994.ll

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preserve-memssa.ll

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process_store.ll

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profitable-memset.ll

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smaller.ll

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sret.ll

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stack-move.ll

[MemCpyOpt] allow memcpy-to-memcpy optimization with smaller dest than src (#176010 )

2026-01-14 15:16:11 -05:00

stackrestore.ll

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store-to-memset-is-nonzero-type.ll

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store-to-memset.ll

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variable-sized-memcpy-memcpy.ll

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variable-sized-memcpy-uninit.ll

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variable-sized-memset-memcpy.ll

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vscale-crashes.ll

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vscale-memset.ll

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