[mlir] Swap use of to_vector() with lookupValues() in LLVMIRIntrinsicGen

Summary:
llvm::to_vector() accepts a Range value and not the pair of arguments
we are currently passing. Also we probably wan

[mlir] Swap use of to_vector() with lookupValues() in LLVMIRIntrinsicGen

Summary:
llvm::to_vector() accepts a Range value and not the pair of arguments
we are currently passing. Also we probably want the lowered LLVM
values in the vector, while operand_begin()/operand_end() on MLIR ops
returns MLIR types. lookupValues() seems the correct way to collect
such values.

Reviewers: rriddle, andydavis1, antiagainst, nicolasvasilache, ftynse

Subscribers: jdoerfert, mehdi_amini, jpienaar, burmako, shauheen, arpith-jacob, mgester, lucyrfox, liufengdb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73137

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[mlir] Fix LLVM intrinsic convesion generator for overloadable types.

Summary:
If an intrinsic has overloadable types like llvm_anyint_ty or
llvm_anyfloat_ty then to getDeclaration() we need to pass

[mlir] Fix LLVM intrinsic convesion generator for overloadable types.

Summary:
If an intrinsic has overloadable types like llvm_anyint_ty or
llvm_anyfloat_ty then to getDeclaration() we need to pass a list
of the types that are "undefined" essentially concretizing them.

This patch add support for deriving such types from the MLIR op
that has been matched.

Reviewers: andydavis1, ftynse, nicolasvasilache, antiagainst

Subscribers: mehdi_amini, rriddle, jpienaar, burmako, shauheen, arpith-jacob, mgester, lucyrfox, liufengdb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D72974

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[mlir] NFC: Fix trivial typos in comments

Differential Revision: https://reviews.llvm.org/D73012

[mlir] Generator converting LLVM intrinsics defs to MLIR ODS

Introduce a new generator for MLIR tablegen driver that consumes LLVM IR
intrinsic definitions and produces MLIR ODS definitions. This is

[mlir] Generator converting LLVM intrinsics defs to MLIR ODS

Introduce a new generator for MLIR tablegen driver that consumes LLVM IR
intrinsic definitions and produces MLIR ODS definitions. This is useful to
bulk-generate MLIR operations equivalent to existing LLVM IR intrinsics, such
as additional arithmetic instructions or NVVM.

A test exercising the generation is also added. It reads the main LLVM
intrinsics file and produces ODS to make sure the TableGen model remains in
sync with what is used in LLVM.

Differential Revision: https://reviews.llvm.org/D72926

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