[llvm] [CodeGen] Introduce Static Data Splitter pass (PR #122183)

Wed Jan 22 21:40:51 PST 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `fuchsia-x86_64-linux` running on `fuchsia-debian-64-us-central1-a-1` while building `llvm` at step 4 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/11/builds/11471

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

```
Step 4 (annotate) failure: 'python ../llvm-zorg/zorg/buildbot/builders/annotated/fuchsia-linux.py ...' (failure)
...
[1368/1371] Building CXX object unittests/Transforms/Scalar/CMakeFiles/ScalarTests.dir/LoopPassManagerTest.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[1369/1371] Linking CXX executable unittests/Transforms/Scalar/ScalarTests
[1370/1371] Running the LLVM regression tests
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/ld.lld
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/lld-link
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/ld64.lld
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/wasm-ld
-- Testing: 57820 tests, 60 workers --
Testing:  0.. 10.. 20.. 30.. 40
FAIL: LLVM :: CodeGen/X86/jump-table-partition.ll (25999 of 57820)
******************** TEST 'LLVM :: CodeGen/X86/jump-table-partition.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 6: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/llc -stop-after=finalize-isel -min-jump-table-entries=2 /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll -o /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/llc -stop-after=finalize-isel -min-jump-table-entries=2 /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll -o /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir
RUN: at line 7: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/llc --run-pass=static-data-splitter -stats -x mir /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir -o - 2>&1 | /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll --check-prefix=STAT
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/llc --run-pass=static-data-splitter -stats -x mir /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir -o -
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll --check-prefix=STAT
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll:13:13: error: STAT-DAG: expected string not found in input
; STAT-DAG: 2 static-data-splitter - Number of cold jump tables seen
            ^
<stdin>:1:1: note: scanning from here
--- |
^
<stdin>:10:7: note: possible intended match here
 @case2 = private constant [7 x i8] c"case 2\00"
      ^

Input file: <stdin>
Check file: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll

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

Input was:
<<<<<<
          1: --- | 
dag:13'0     X~~~~~ error: no match found
          2:  ; ModuleID = '/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir' 
dag:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          3:  source_filename = "/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll" 
dag:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          4:  target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128" 
dag:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          5:  target triple = "x86_64-unknown-linux-gnu" 
dag:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          6:   
Step 7 (check) failure: check (failure)
...
[1368/1371] Building CXX object unittests/Transforms/Scalar/CMakeFiles/ScalarTests.dir/LoopPassManagerTest.cpp.o
clang++: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument]
[1369/1371] Linking CXX executable unittests/Transforms/Scalar/ScalarTests
[1370/1371] Running the LLVM regression tests
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld.lld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/ld.lld
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using lld-link: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/lld-link
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using ld64.lld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/ld64.lld
llvm-lit: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/utils/lit/lit/llvm/config.py:506: note: using wasm-ld: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/wasm-ld
-- Testing: 57820 tests, 60 workers --
Testing:  0.. 10.. 20.. 30.. 40
FAIL: LLVM :: CodeGen/X86/jump-table-partition.ll (25999 of 57820)
******************** TEST 'LLVM :: CodeGen/X86/jump-table-partition.ll' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
RUN: at line 6: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/llc -stop-after=finalize-isel -min-jump-table-entries=2 /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll -o /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/llc -stop-after=finalize-isel -min-jump-table-entries=2 /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll -o /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir
RUN: at line 7: /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/llc --run-pass=static-data-splitter -stats -x mir /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir -o - 2>&1 | /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll --check-prefix=STAT
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/llc --run-pass=static-data-splitter -stats -x mir /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir -o -
+ /var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/bin/FileCheck /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll --check-prefix=STAT
/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll:13:13: error: STAT-DAG: expected string not found in input
; STAT-DAG: 2 static-data-splitter - Number of cold jump tables seen
            ^
<stdin>:1:1: note: scanning from here
--- |
^
<stdin>:10:7: note: possible intended match here
 @case2 = private constant [7 x i8] c"case 2\00"
      ^

Input file: <stdin>
Check file: /var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll

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

Input was:
<<<<<<
          1: --- | 
dag:13'0     X~~~~~ error: no match found
          2:  ; ModuleID = '/var/lib/buildbot/fuchsia-x86_64-linux/build/llvm-build-w80i5zhc/test/CodeGen/X86/Output/jump-table-partition.ll.tmp.mir' 
dag:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          3:  source_filename = "/var/lib/buildbot/fuchsia-x86_64-linux/llvm-project/llvm/test/CodeGen/X86/jump-table-partition.ll" 
dag:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          4:  target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128" 
dag:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          5:  target triple = "x86_64-unknown-linux-gnu" 
dag:13'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          6:   

```

</details>

https://github.com/llvm/llvm-project/pull/122183