[Mlir-commits] [mlir] [mlir][reducer] Add eraseRedundantBlocksInRegion and getSuccessorForwardOperands API to BranchOpInterface (PR #187864)

Sat Mar 28 01:31:49 PDT 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux-bootstrap-asan` running on `sanitizer-buildbot8` while building `mlir` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/24/builds/18957

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 95726 of 96331 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..
FAIL: MLIR :: mlir-reduce/reduction-tree.mlir (95325 of 95726)
******************** TEST 'MLIR :: mlir-reduce/reduction-tree.mlir' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/mlir-reduce /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir -split-input-file -reduction-tree='traversal-mode=0 test=/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/failure-test.sh' | /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/mlir-reduce /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir -split-input-file '-reduction-tree=traversal-mode=0 test=/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/failure-test.sh'
# .---command stderr------------
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:1 offset ":11:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:1 offset ":13:8): error: block with no terminator, has %0 = "test.op_crash_long"(%arg0, %arg1, %arg2) : (i32, i32, i32) -> i32
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:22 offset ":18:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:62 offset ":7:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:81 offset ":7:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:81 offset ":7:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:81 offset ":7:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:105 offset ":7:1): error: empty block: expect at least a terminator
# `-----------------------------
# error: command failed with exit status: 1
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir
# note: command had no output on stdout or stderr

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
Slowest Tests:
--------------------------------------------------------------------------
136.18s: Clang :: Preprocessor/riscv-target-features.c
128.14s: Clang :: Driver/arm-cortex-cpus-1.c
126.17s: Clang :: Driver/arm-cortex-cpus-2.c
120.74s: Clang :: OpenMP/target_defaultmap_codegen_01.cpp
116.32s: Clang :: OpenMP/target_update_codegen.cpp
105.92s: Clang :: Preprocessor/aarch64-target-features.c
102.98s: Clang :: Preprocessor/arm-target-features.c
97.35s: LLVM :: CodeGen/AMDGPU/sched-group-barrier-pipeline-solver.mir
93.81s: LLVM :: CodeGen/RISCV/attributes.ll
85.91s: Clang :: Driver/fsanitize.c
Step 11 (stage2/asan check) failure: stage2/asan check (failure)
...
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using lld-link: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/lld-link
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using ld64.lld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/ld64.lld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/llvm/config.py:569: note: using wasm-ld: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/wasm-ld
llvm-lit: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/llvm/utils/lit/lit/main.py:74: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 95726 of 96331 tests, 72 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..
FAIL: MLIR :: mlir-reduce/reduction-tree.mlir (95325 of 95726)
******************** TEST 'MLIR :: mlir-reduce/reduction-tree.mlir' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 2
/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/mlir-reduce /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir -split-input-file -reduction-tree='traversal-mode=0 test=/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/failure-test.sh' | /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/mlir-reduce /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir -split-input-file '-reduction-tree=traversal-mode=0 test=/home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/failure-test.sh'
# .---command stderr------------
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:1 offset ":11:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:1 offset ":13:8): error: block with no terminator, has %0 = "test.op_crash_long"(%arg0, %arg1, %arg2) : (i32, i32, i32) -> i32
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:22 offset ":18:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:62 offset ":7:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:81 offset ":7:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:81 offset ":7:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:81 offset ":7:1): error: empty block: expect at least a terminator
# | loc("within split at /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir:105 offset ":7:1): error: empty block: expect at least a terminator
# `-----------------------------
# error: command failed with exit status: 1
# executed command: /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm_build_asan/bin/FileCheck /home/b/sanitizer-aarch64-linux-bootstrap-asan/build/llvm-project/mlir/test/mlir-reduce/reduction-tree.mlir
# note: command had no output on stdout or stderr

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90.. 
Slowest Tests:
--------------------------------------------------------------------------
136.18s: Clang :: Preprocessor/riscv-target-features.c
128.14s: Clang :: Driver/arm-cortex-cpus-1.c
126.17s: Clang :: Driver/arm-cortex-cpus-2.c
120.74s: Clang :: OpenMP/target_defaultmap_codegen_01.cpp
116.32s: Clang :: OpenMP/target_update_codegen.cpp
105.92s: Clang :: Preprocessor/aarch64-target-features.c
102.98s: Clang :: Preprocessor/arm-target-features.c
97.35s: LLVM :: CodeGen/AMDGPU/sched-group-barrier-pipeline-solver.mir
93.81s: LLVM :: CodeGen/RISCV/attributes.ll
85.91s: Clang :: Driver/fsanitize.c

```

</details>

https://github.com/llvm/llvm-project/pull/187864