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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[Mark-Simulacrum]

@bors r+ rollup=iffy

[bors]

📌 Commit 62fedef has been approved by Mark-Simulacrum

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[bors]

⌛ Testing commit 62fedef with merge 655cf53...

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💔 Test failed - checks-actions

[Mark-Simulacrum]

@bors r+

[bors]

📌 Commit 0ec717b has been approved by Mark-Simulacrum

It is now in the queue for this repository.

[bors]

⌛ Testing commit 0ec717b with merge 159ccc2...

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💔 Test failed - checks-actions

[veera-sivarajan]

@rustbot review

[Mark-Simulacrum]

@bors r+

[bors]

📌 Commit dfca140 has been approved by Mark-Simulacrum

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[workingjubilee]

@bors p=5

[bors]

⌛ Testing commit dfca140 with merge 0d4241f...

[rust-log-analyzer]

The job arm-android failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot)

test [codegen] tests/codegen/cfguard-non-msvc.rs ... ok
test [codegen] tests/codegen/char-ascii-branchless.rs ... ok
test [codegen] tests/codegen/checked_ilog.rs ... ok
test [codegen] tests/codegen/checked_math.rs ... ok
test [codegen] tests/codegen/classify-fp-category-of-usize-without-branch.rs ... FAILED
test [codegen] tests/codegen/codemodels.rs#MODEL-LARGE ... ignored, only executed when the architecture is x86_64
test [codegen] tests/codegen/codemodels.rs#MODEL-MEDIUM ... ignored, only executed when the architecture is x86_64
test [codegen] tests/codegen/codemodels.rs#MODEL-SMALL ... ignored, only executed when the architecture is x86_64
test [codegen] tests/codegen/codemodels.rs#NOMODEL ... ignored, only executed when the architecture is x86_64
---
test [codegen] tests/codegen/zip.rs ... ok

failures:

---- [codegen] tests/codegen/classify-fp-category-of-usize-without-branch.rs stdout ----

error: verification with 'FileCheck' failed
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/ci-llvm/bin/FileCheck" "--input-file" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/codegen/classify-fp-category-of-usize-without-branch/classify-fp-category-of-usize-without-branch.ll" "/checkout/tests/codegen/classify-fp-category-of-usize-without-branch.rs" "--check-prefix=CHECK" "--allow-unused-prefixes" "--dump-input-context" "100"
--- stderr -------------------------------
--- stderr -------------------------------
/checkout/tests/codegen/classify-fp-category-of-usize-without-branch.rs:29:12: error: CHECK: expected string not found in input
 // CHECK: [[TMP0:%.*]] = tail call
           ^
/checkout/obj/build/x86_64-unknown-linux-gnu/test/codegen/classify-fp-category-of-usize-without-branch/classify-fp-category-of-usize-without-branch.ll:7:41: note: scanning from here
define noundef zeroext i1 @complex_test(i32 noundef %input) unnamed_addr #0 {
                                        ^
/checkout/obj/build/x86_64-unknown-linux-gnu/test/codegen/classify-fp-category-of-usize-without-branch/classify-fp-category-of-usize-without-branch.ll:33:82: note: possible intended match here
; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable


Input file: /checkout/obj/build/x86_64-unknown-linux-gnu/test/codegen/classify-fp-category-of-usize-without-branch/classify-fp-category-of-usize-without-branch.ll
Check file: /checkout/tests/codegen/classify-fp-category-of-usize-without-branch.rs

-dump-input=help explains the following input dump.
Input was:
<<<<<<
<<<<<<
            1: ; ModuleID = 'classify_fp_category_of_usize_without_branch.126dbdb42f0b9381-cgu.0' 
            2: source_filename = "classify_fp_category_of_usize_without_branch.126dbdb42f0b9381-cgu.0" 
            3: target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64" 
            4: target triple = "arm-unknown-linux-android" 
            5:  
            6: ; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable 
            7: define noundef zeroext i1 @complex_test(i32 noundef %input) unnamed_addr #0 { 
check:29'0                                             X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
check:29'0     ~~~~~~~
check:29'0     ~~~~~~~
            9:  switch i32 %input, label %bb2 [ 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           10:  i32 128, label %bb1 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~
           11:  i32 1, label %bb1 
check:29'0     ~~~~~~~~~~~~~~~~~~~
           12:  i32 64, label %bb1 
check:29'0     ~~~~~~~~~~~~~~~~~~~~
           13:  i32 2, label %bb1 
check:29'0     ~~~~~~~~~~~~~~~~~~~
           14:  i32 32, label %bb1 
check:29'0     ~~~~~~~~~~~~~~~~~~~~
           15:  i32 4, label %bb1 
check:29'0     ~~~~~~~~~~~~~~~~~~~
           16:  i32 16, label %bb4 
check:29'0     ~~~~~~~~~~~~~~~~~~~~
           17:  i32 8, label %bb4 
check:29'0     ~~~~~~~~~~~~~~~~~~~
           18:  i32 256, label %bb1 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~
           19:  i32 512, label %bb1 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~
           20:  ] 
check:29'0     ~~~
check:29'0     ~
check:29'0     ~
           22: bb2: ; preds = %start 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~
           23:  unreachable 
check:29'0     ~~~~~~~~~~~~~
check:29'0     ~
check:29'0     ~
           25: bb4: ; preds = %start, %start 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           26:  br label %bb1 
check:29'0     ~~~~~~~~~~~~~~~
check:29'0     ~
check:29'0     ~
           28: bb1: ; preds = %start, %start, %start, %start, %start, %start, %start, %start, %bb4 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           29:  %_0 = phi i1 [ true, %bb4 ], [ false, %start ], [ false, %start ], [ false, %start ], [ false, %start ], [ false, %start ], [ false, %start ], [ false, %start ], [ false, %start ] 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           30:  ret i1 %_0 
check:29'0     ~~~~~~~~~~~~
           31: } 
check:29'0     ~~
check:29'0     ~
check:29'0     ~
           33: ; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
check:29'1                                                                                      ?               possible intended match
           34: define noundef zeroext i1 @simpler_test(i32 noundef %input) unnamed_addr #0 { 
check:29'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           35: start: 
           36:  %0 = add i32 %input, -8 
           37:  %switch.and = and i32 %0, -9 
           38:  %switch.selectcmp = icmp eq i32 %switch.and, 0 
           39:  ret i1 %switch.selectcmp 
           40: } 
           41:  
           42: attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable "target-cpu"="generic" "target-features"="+strict-align,+v5te" } 
           43:  
           44: !llvm.module.flags = !{!0} 
           45: !llvm.ident = !{!1} 
           46:  
           47: !0 = !{i32 8, !"PIC Level", i32 2} 
           48: !1 = !{!"rustc version 1.86.0-nightly (0d4241f04 2025-02-11)"} 
------------------------------------------




failures:
    [codegen] tests/codegen/classify-fp-category-of-usize-without-branch.rs
test result: FAILED. 620 passed; 1 failed; 201 ignored; 0 measured; 0 filtered out; finished in 11.86s

Some tests failed in compiletest suite=codegen mode=codegen host=x86_64-unknown-linux-gnu target=arm-linux-androideabi
Build completed unsuccessfully in 0:51:08

[bors]

💔 Test failed - checks-actions

[veera-sivarajan]

@rustbot author

[DianQK]

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.

Should we use them? Or should we add so many CHECK?

Unlike LLVM, we test multiple platforms in Rust, and this IR also comes from codegen. These IRs can vary.

[DianQK]

Just a question: should this be an assembly test?
The IR change was introduced by llvm/llvm-project#84628, and this is not a backend change.