Add Four Codegen Tests

[veera-sivarajan]

Closes #74615
Closes #123216
Closes #49572
Closes #93514

This PR adds four codegen tests. The FileCheck assertions were generated with the help of update_test_checks.py and update_llc_test_checks.py from the LLVM project.

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[rust-log-analyzer]

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#21 exporting to docker image format
#21 sending tarball 27.1s done
#21 DONE 32.3s
##[endgroup]
Setting extra environment values for docker:  --env ENABLE_GCC_CODEGEN=1 --env GCC_EXEC_PREFIX=/usr/lib/gcc/
[CI_JOB_NAME=x86_64-gnu-llvm-18]
debug: `DISABLE_CI_RUSTC_IF_INCOMPATIBLE` configured.
---
sccache: Starting the server...
##[group]Configure the build
configure: processing command line
configure: 
configure: build.configure-args := ['--build=x86_64-unknown-linux-gnu', '--llvm-root=/usr/lib/llvm-18', '--enable-llvm-link-shared', '--set', 'rust.randomize-layout=true', '--set', 'rust.thin-lto-import-instr-limit=10', '--enable-verbose-configure', '--enable-sccache', '--disable-manage-submodules', '--enable-locked-deps', '--enable-cargo-native-static', '--set', 'rust.codegen-units-std=1', '--set', 'dist.compression-profile=balanced', '--dist-compression-formats=xz', '--set', 'rust.lld=false', '--disable-dist-src', '--release-channel=nightly', '--enable-debug-assertions', '--enable-overflow-checks', '--enable-llvm-assertions', '--set', 'rust.verify-llvm-ir', '--set', 'rust.codegen-backends=llvm,cranelift,gcc', '--set', 'llvm.static-libstdcpp', '--enable-new-symbol-mangling']
configure: target.x86_64-unknown-linux-gnu.llvm-config := /usr/lib/llvm-18/bin/llvm-config
configure: llvm.link-shared     := True
configure: rust.randomize-layout := True
configure: rust.thin-lto-import-instr-limit := 10
---
failures:

---- [assembly] tests/assembly/indexing-with-bools-no-redundant-instructions.rs stdout ----

error: verification with 'FileCheck' failed
status: exit status: 1
command: "/usr/lib/llvm-18/bin/FileCheck" "--input-file" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/assembly/indexing-with-bools-no-redundant-instructions/indexing-with-bools-no-redundant-instructions.s" "/checkout/tests/assembly/indexing-with-bools-no-redundant-instructions.rs" "--check-prefix=CHECK" "--allow-unused-prefixes" "--dump-input-context" "100"
--- stderr -------------------------------
/checkout/tests/assembly/indexing-with-bools-no-redundant-instructions.rs:14:17: error: CHECK-NEXT: expected string not found in input
/checkout/tests/assembly/indexing-with-bools-no-redundant-instructions.rs:14:17: error: CHECK-NEXT: expected string not found in input
 // CHECK-NEXT: je .LBB0_2
/checkout/obj/build/x86_64-unknown-linux-gnu/test/assembly/indexing-with-bools-no-redundant-instructions/indexing-with-bools-no-redundant-instructions.s:9:18: note: scanning from here
/checkout/obj/build/x86_64-unknown-linux-gnu/test/assembly/indexing-with-bools-no-redundant-instructions/indexing-with-bools-no-redundant-instructions.s:9:18: note: scanning from here
 testl %esi, %esi
/checkout/obj/build/x86_64-unknown-linux-gnu/test/assembly/indexing-with-bools-no-redundant-instructions/indexing-with-bools-no-redundant-instructions.s:10:2: note: possible intended match here
 je .LBB0_1
 ^


Input file: /checkout/obj/build/x86_64-unknown-linux-gnu/test/assembly/indexing-with-bools-no-redundant-instructions/indexing-with-bools-no-redundant-instructions.s
Check file: /checkout/tests/assembly/indexing-with-bools-no-redundant-instructions.rs

-dump-input=help explains the following input dump.
Input was:
<<<<<<
           1:  .text 
           1:  .text 
           2:  .file "indexing_with_bools_no_redundant_instructions.43d038d86a482d16-cgu.0" 
           3:  .section .text.f,"ax",@progbits 
           4:  .globl f 
           5:  .p2align 4, 0x90 
           6:  .type f,@function 
           7: f: 
           8:  .cfi_startproc 
           9:  testl %esi, %esi 
next:14'0                      X error: no match found
          10:  je .LBB0_1 
next:14'0     ~~~~~~~~~~~~
next:14'1      ?           possible intended match
          11:  xorb %dl, %dil 
next:14'0     ~~~~~~~~~~~~~~~~
          12:  orb $1, (%rcx) 
next:14'0     ~~~~~~~~~~~~~~~~
          13:  jmp .LBB0_3 
next:14'0     ~~~~~~~~~~~~~
          14: .LBB0_1: 
next:14'0     ~~~~~~~~~
          15:  andb $1, %dil 
next:14'0     ~~~~~~~~~~~~~~~
          16: .LBB0_3: 
next:14'0     ~~~~~~~~~
          17:  movzbl %dil, %eax 
next:14'0     ~~~~~~~~~~~~~~~~~~~
          18:  andl $1, %eax 
next:14'0     ~~~~~~~~~~~~~~~
          19:  shll $4, %eax 
next:14'0     ~~~~~~~~~~~~~~~
          20:  orb $1, (%rcx,%rax) 
next:14'0     ~~~~~~~~~~~~~~~~~~~~~
          21:  retq 
next:14'0     ~~~~~~
          22: .Lfunc_end0: 
next:14'0     ~~~~~~~~~~~~~
          23:  .size f, .Lfunc_end0-f 
next:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~
          24:  .cfi_endproc 
next:14'0     ~~~~~~~~~~~~~~
next:14'0     ~
next:14'0     ~
          26:  .ident "rustc version 1.85.0-nightly (cea263bb2 2024-12-22)" 
next:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          27:  .section ".note.GNU-stack","",@progbits 
next:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
------------------------------------------