[llvm] [LoopVectorize] Add metadata to distinguish vectorized loop body from scalar remainder (PR #190258)
via llvm-commits
llvm-commits at lists.llvm.org
Fri Apr 3 09:23:20 PDT 2026
github-actions[bot] wrote:
<!--PREMERGE ADVISOR COMMENT: Linux-->
# :penguin: Linux x64 Test Results
* 172127 tests passed
* 3105 tests skipped
* 4 tests failed
## Failed Tests
(click on a test name to see its output)
### LLVM
<details>
<summary>LLVM.Transforms/LoopTransformWarning/amdgpu-vectorized-remainder-unroll-warning.ll</summary>
```
Exit Code: 1
Command Output (stdout):
--
# RUN: at line 1
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt < /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/amdgpu-vectorized-remainder-unroll-warning.ll -passes='loop-vectorize,loop-unroll,transform-warning' -force-vector-width=4 -force-vector-interleave=1 -disable-output -pass-remarks-missed=transform-warning 2>&1 | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/amdgpu-vectorized-remainder-unroll-warning.ll
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt -passes=loop-vectorize,loop-unroll,transform-warning -force-vector-width=4 -force-vector-interleave=1 -disable-output -pass-remarks-missed=transform-warning
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/amdgpu-vectorized-remainder-unroll-warning.ll
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/amdgpu-vectorized-remainder-unroll-warning.ll:13:10: error: CHECK: expected string not found in input
# | ; CHECK: warning: {{.*}} scalar remainder loop after vectorization not unrolled: the optimizer was unable to perform the requested transformation
# | ^
# | <stdin>:1:1: note: scanning from here
# | warning: test.hip:7:3: remainder loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
# | ^
# |
# | Input file: <stdin>
# | Check file: /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/amdgpu-vectorized-remainder-unroll-warning.ll
# |
# | -dump-input=help explains the following input dump.
# |
# | Input was:
# | <<<<<<
# | 1: warning: test.hip:7:3: remainder loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
# | check:13 X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1
--
```
</details>
<details>
<summary>LLVM.Transforms/LoopTransformWarning/vectorized-remainder-unroll-warning.ll</summary>
```
Exit Code: 1
Command Output (stdout):
--
# RUN: at line 1
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt < /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/vectorized-remainder-unroll-warning.ll -passes='loop-vectorize,transform-warning' -force-vector-width=4 -force-vector-interleave=1 -disable-output -pass-remarks-missed=transform-warning 2>&1 | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/vectorized-remainder-unroll-warning.ll
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt -passes=loop-vectorize,transform-warning -force-vector-width=4 -force-vector-interleave=1 -disable-output -pass-remarks-missed=transform-warning
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/vectorized-remainder-unroll-warning.ll
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/vectorized-remainder-unroll-warning.ll:15:10: error: CHECK: expected string not found in input
# | ; CHECK: warning: {{.*}} scalar remainder loop after vectorization not unrolled: the optimizer was unable to perform the requested transformation
# | ^
# | <stdin>:1:118: note: scanning from here
# | warning: test.cpp:7:3: vectorized loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
# | ^
# | <stdin>:2:1: note: possible intended match here
# | warning: test.cpp:7:3: remainder loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
# | ^
# |
# | Input file: <stdin>
# | Check file: /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopTransformWarning/vectorized-remainder-unroll-warning.ll
# |
# | -dump-input=help explains the following input dump.
# |
# | Input was:
# | <<<<<<
# | 1: warning: test.cpp:7:3: vectorized loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
# | check:15'0 X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
# | 2: warning: test.cpp:7:3: remainder loop not unrolled: the optimizer was unable to perform the requested transformation; the transformation might be disabled or specified as part of an unsupported transformation ordering
# | check:15'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | check:15'1 ? possible intended match
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1
--
```
</details>
<details>
<summary>LLVM.Transforms/LoopUnroll/remainder-loop-remarks.ll</summary>
```
Exit Code: 1
Command Output (stdout):
--
# RUN: at line 1
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt < /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/remainder-loop-remarks.ll -S -passes=loop-unroll -pass-remarks=loop-unroll -pass-remarks-missed=loop-unroll -unroll-count=4 2>&1 | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/remainder-loop-remarks.ll
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt -S -passes=loop-unroll -pass-remarks=loop-unroll -pass-remarks-missed=loop-unroll -unroll-count=4
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/remainder-loop-remarks.ll
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/remainder-loop-remarks.ll:6:10: error: CHECK: expected string not found in input
# | ; CHECK: remark: {{.*}}: unrolled scalar remainder loop after vectorization by a factor of 4
# | ^
# | <stdin>:1:1: note: scanning from here
# | remark: <unknown>:0:0: unrolled remainder loop by a factor of 4
# | ^
# | <stdin>:1:12: note: possible intended match here
# | remark: <unknown>:0:0: unrolled remainder loop by a factor of 4
# | ^
# |
# | Input file: <stdin>
# | Check file: /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/remainder-loop-remarks.ll
# |
# | -dump-input=help explains the following input dump.
# |
# | Input was:
# | <<<<<<
# | 1: remark: <unknown>:0:0: unrolled remainder loop by a factor of 4
# | check:6'0 X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
# | check:6'1 ? possible intended match
# | 2: remark: <unknown>:0:0: unrolled vectorized loop by a factor of 4
# | check:6'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | 3: remark: <unknown>:0:0: unrolled loop by a factor of 4
# | check:6'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | 4: ; ModuleID = '<stdin>'
# | check:6'0 ~~~~~~~~~~~~~~~~~~~~~~~
# | 5: source_filename = "<stdin>"
# | check:6'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | 6:
# | check:6'0 ~
# | .
# | .
# | .
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1
--
```
</details>
<details>
<summary>LLVM.Transforms/LoopUnroll/vectorize-then-unroll-remarks.ll</summary>
```
Exit Code: 1
Command Output (stdout):
--
# RUN: at line 1
/home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt < /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/vectorize-then-unroll-remarks.ll -S -passes='loop-vectorize,loop-unroll' -pass-remarks=loop-unroll -pass-remarks-missed=loop-unroll -force-vector-width=4 -unroll-count=2 2>&1 | /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/vectorize-then-unroll-remarks.ll
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/opt -S -passes=loop-vectorize,loop-unroll -pass-remarks=loop-unroll -pass-remarks-missed=loop-unroll -force-vector-width=4 -unroll-count=2
# note: command had no output on stdout or stderr
# executed command: /home/gha/actions-runner/_work/llvm-project/llvm-project/build/bin/FileCheck /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/vectorize-then-unroll-remarks.ll
# .---command stderr------------
# | /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/vectorize-then-unroll-remarks.ll:12:14: error: CHECK-DAG: expected string not found in input
# | ; CHECK-DAG: remark: <stdin>:1:1: {{(unrolled scalar remainder loop after vectorization|scalar remainder loop after vectorization is not unrolled)}}
# | ^
# | <stdin>:1:1: note: scanning from here
# | remark: <stdin>:1:1: unrolled vectorized loop by a factor of 2
# | ^
# |
# | Input file: <stdin>
# | Check file: /home/gha/actions-runner/_work/llvm-project/llvm-project/llvm/test/Transforms/LoopUnroll/vectorize-then-unroll-remarks.ll
# |
# | -dump-input=help explains the following input dump.
# |
# | Input was:
# | <<<<<<
# | 1: remark: <stdin>:1:1: unrolled vectorized loop by a factor of 2
# | dag:12 X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
# | 2: remark: <stdin>:1:1: unrolled remainder loop by a factor of 2
# | dag:12 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | 3: ; ModuleID = '<stdin>'
# | dag:12 ~~~~~~~~~~~~~~~~~~~~~~~
# | 4: source_filename = "<stdin>"
# | dag:12 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | 5:
# | dag:12 ~
# | 6: define void @vec_then_unroll(ptr noalias %a, ptr noalias %b, i64 %n) !dbg !4 {
# | dag:12 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# | .
# | .
# | .
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1
--
```
</details>
If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.
https://github.com/llvm/llvm-project/pull/190258
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