NFC: Refactor MIRPrinter into state struct and functions

[MatzeB]

Moves MIRPRinter and MIPrinter fields into a new MFPrintState
struct. Turns methods into independent functions.

• This slightly simplifies the code.
• In the future this will allow to pass the state around to other printing functions
  without the need to expose classes in the public headers.

[optimisan]

This reminds me we have a pending chnage to remove MMI from this printer-else NPM codegen doesn't work

[llvm-ci]

LLVM Buildbot has detected a new failure on builder llvm-clang-x86_64-gcc-ubuntu-no-asserts running on doug-worker-6 while building llvm at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/202/builds/1288

Here is the relevant piece of the build log for the reference

Step 6 (test-build-unified-tree-check-all) failure: test (failure)
******************** TEST 'LLVM :: tools/dsymutil/X86/op-convert-offset.test' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
warning: /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset.o: timestamp mismatch between object file (2025-03-11 17:27:45.671531848) and debug map (2022-07-12 20:49:30.000000000)
warning: /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset.o: timestamp mismatch between object file (2025-03-11 17:27:45.671531848) and debug map (2022-07-12 20:49:30.000000000)
warning: cann't read address attribute value.
note: while processing op-convert-offset1.c

--
Command Output (stderr):
--
/home/buildbot/buildbot-root/gcc-no-asserts/build/bin/dsymutil -oso-prepend-path /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset -o /home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM 2>&1 # RUN: at line 23
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/dsymutil -oso-prepend-path /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset -o /home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM
/home/buildbot/buildbot-root/gcc-no-asserts/build/bin/llvm-dwarfdump /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset.o 2>&1 | /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/FileCheck /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test --check-prefix OBJ # RUN: at line 24
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/llvm-dwarfdump /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset.o
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/FileCheck /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test --check-prefix OBJ
/home/buildbot/buildbot-root/gcc-no-asserts/build/bin/llvm-dwarfdump /home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM 2>&1 | /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/FileCheck /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test --check-prefix DSYM # RUN: at line 25
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/llvm-dwarfdump /home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/FileCheck /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test --check-prefix DSYM
/home/buildbot/buildbot-root/gcc-no-asserts/build/bin/dsymutil --linker parallel -oso-prepend-path /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs   /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset   -o /home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM 2>&1 # RUN: at line 27
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/dsymutil --linker parallel -oso-prepend-path /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset -o /home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM
/home/buildbot/buildbot-root/gcc-no-asserts/build/bin/llvm-dwarfdump    /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset.o 2>&1    | /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/FileCheck /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test --check-prefix OBJ # RUN: at line 30
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/llvm-dwarfdump /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/../Inputs/private/tmp/op-convert-offset/op-convert-offset.o
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/FileCheck /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test --check-prefix OBJ
/home/buildbot/buildbot-root/gcc-no-asserts/build/bin/llvm-dwarfdump /home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM 2>&1 | /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/FileCheck /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test --check-prefix DSYM # RUN: at line 33
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/llvm-dwarfdump /home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM
+ /home/buildbot/buildbot-root/gcc-no-asserts/build/bin/FileCheck /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test --check-prefix DSYM
�[1m/home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test:45:7: �[0m�[0;1;31merror: �[0m�[1mDSYM: expected string not found in input
�[0mDSYM: 0x00000084: DW_TAG_base_type
�[0;1;32m      ^
�[0m�[1m<stdin>:1:1: �[0m�[0;1;30mnote: �[0m�[1mscanning from here
�[0m/home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM/Contents/Resources/DWARF/op-convert-offset: file format Mach-O 64-bit x86-64
�[0;1;32m^
�[0m�[1m<stdin>:16:1: �[0m�[0;1;30mnote: �[0m�[1mpossible intended match here
�[0m0x0000001e: DW_TAG_base_type
�[0;1;32m^
�[0m
Input file: <stdin>
Check file: /home/buildbot/buildbot-root/gcc-no-asserts/llvm-project/llvm/test/tools/dsymutil/X86/op-convert-offset.test

-dump-input=help explains the following input dump.

Input was:
<<<<<<
�[1m�[0m�[0;1;30m            1: �[0m�[1m�[0;1;46m/home/buildbot/buildbot-root/gcc-no-asserts/build/test/tools/dsymutil/X86/Output/op-convert-offset.test.tmp.dSYM/Contents/Resources/DWARF/op-convert-offset: file format Mach-O 64-bit x86-64 �[0m
�[0;1;31mcheck:45'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
�[0m�[0;1;30m            2: �[0m�[1m�[0;1;46m �[0m
�[0;1;31mcheck:45'0     ~
...