Fixes#152754
- Fixes the ArgOperand index in `DXILOpLowering.cpp` used to obtain the
pointer operand of a lifetime intrinsic.
- Updates the tests
`llvm/test/CodeGen/DirectX/legalize-lifetimes-valver-1.5.ll`,
`llvm/test/CodeGen/DirectX/legalize-lifetimes-valver-1.6.ll`,
`llvm/test/CodeGen/DirectX/ShaderFlags/lifetimes-noint64op.ll`, and
`llvm/test/tools/dxil-dis/lifetimes.ll` to use the new size-less
lifetime intrinsic
- Removes lifetime intrinsics from the test
`llvm/test/CodeGen/DirectX/legalize-memset.ll` to be consistent with the
corresponding memcpy test which does not have lifetime intrinsics.
(Removal of lifetime intrinsics from tests like this was suggested here
in the past:
https://github.com/llvm/llvm-project/pull/139173#discussion_r2091778868)
- Rewrites the lifetime legalization functions in the EmbedDXILPass to
re-add the explicit size argument for DXIL
e13cb3e299