[llvm] [llvm-cov] Preserve line coverage for trailing zero-length regions (PR #227849)
via llvm-commits
llvm-commits at lists.llvm.org
Wed Sep 30 17:04:21 PDT 2026
github-actions[bot] wrote:
<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results
* 143114 tests passed
* 3404 tests skipped
* 2 tests failed
## Failed Tests
(click on a test name to see its output)
### LLVM
<details>
<summary>LLVM.CodeGen/AMDGPU/loop-header-align-gfx950.mir</summary>
```
Exit Code: 1
Command Output (stdout):
--
# RUN: at line 2
c:\_work\llvm-project\llvm-project\build\bin\llc.exe -mtriple=amdgpu9.50 -run-pass=block-placement -o - C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\loop-header-align-gfx950.mir | c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\loop-header-align-gfx950.mir
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llc.exe' -mtriple=amdgpu9.50 -run-pass=block-placement -o - 'C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\loop-header-align-gfx950.mir'
# note: command had no output on stdout or stderr
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe' 'C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\loop-header-align-gfx950.mir'
# .---command stderr------------
# | C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\loop-header-align-gfx950.mir:26:16: error: CHECK-NEXT: expected string not found in input
# | ; CHECK-NEXT: bb.1 (align 32):
# | ^
# | <stdin>:139:2: note: scanning from here
# |
# | ^
# | <stdin>:140:2: note: possible intended match here
# | bb.1 (align 32, max-bytes-for-alignment 4):
# | ^
# | C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\loop-header-align-gfx950.mir:239:16: error: CHECK-NEXT: expected string not found in input
# | ; CHECK-NEXT: bb.6 (align 32):
# | ^
# | <stdin>:558:2: note: scanning from here
# |
# | ^
# | <stdin>:559:2: note: possible intended match here
# | bb.6 (align 32, max-bytes-for-alignment 4):
# | ^
# |
# | Input file: <stdin>
# | Check file: C:\_work\llvm-project\llvm-project\llvm\test\CodeGen\AMDGPU\loop-header-align-gfx950.mir
# |
# | -dump-input=help explains the following input dump.
# |
# | Input was:
# | <<<<<<
# | .
# | .
# | .
# | 134: bb.0:
# | 135: successors: %bb.1(0x80000000)
# | 136: liveins: $vgpr0_vgpr1
# | 137:
# | 138: renamable $sgpr0_sgpr1 = S_MOV_B64 0
# | 139:
# | next:26'0 { search range start (exclusive)
# | next:26'1 error: no match found in search range
# | 140: bb.1 (align 32, max-bytes-for-alignment 4):
# | next:26'2 ? possible intended match
# | 141: successors: %bb.2(0x04000000), %bb.1(0x7c000000)
# | 142: liveins: $sgpr0_sgpr1, $vgpr0_vgpr1
# | 143:
# | 144: renamable $vgpr0_vgpr1 = V_LSHRREV_B64_e64 1, killed $vgpr0_vgpr1, implicit $exec
# | 145: V_CMP_EQ_U64_e32 0, $vgpr0_vgpr1, implicit-def $vcc, implicit $exec
# | .
# | .
# | .
# | 152:
# | 153: $exec = S_OR_B64 $exec, killed renamable $sgpr0_sgpr1, implicit-def $scc
# | 154: S_SETPC_B64_return undef $sgpr30_sgpr31
# | 155: ...
# | 156: ---
# | 157: name: loop_with_4byte_first_inst
# | next:26'3 } search range end (exclusive)
# | 158: alignment: 1
# | 159: exposesReturnsTwice: false
# | 160: legalized: false
# | 161: regBankSelected: false
# | 162: selected: false
# | .
# | .
# | .
# | 553: bb.1:
# | 554: successors: %bb.2(0x80000000)
# | 555: liveins: $vgpr0_vgpr1
# | 556:
# | 557: S_BRANCH %bb.2
# | 558:
# | next:239'0 { search range start (exclusive)
# | next:239'1 error: no match found in search range
# | 559: bb.6 (align 32, max-bytes-for-alignment 4):
# | next:239'2 ? possible intended match
# | 560: successors: %bb.7(0x04000000), %bb.2(0x7c000000)
# | 561: liveins: $vgpr0_vgpr1
# | 562:
# | 563: renamable $vgpr0_vgpr1 = V_LSHRREV_B64_e64 1, $vgpr0_vgpr1, implicit $exec
# | 564: V_CMP_EQ_U32_e32 0, $vgpr0, implicit-def $vcc, implicit $exec
# | .
# | .
# | .
# | 593: renamable $vgpr0 = V_ADD_U32_e32 1, $vgpr0, implicit $exec
# | 594: S_BRANCH %bb.6
# | 595:
# | 596: bb.7:
# | 597: S_SETPC_B64_return undef $sgpr30_sgpr31
# | 598: ...
# | next:239'3 } search range end (exclusive)
# | >>>>>>
# `-----------------------------
# error: command failed with exit status: 1
--
```
</details>
<details>
<summary>LLVM.tools/llvm-cov/trailing-zero-length-region.test</summary>
```
Exit Code: 2
Command Output (stdout):
--
# RUN: at line 7
c:\_work\llvm-project\llvm-project\build\bin\llvm-profdata.exe merge C:\_work\llvm-project\llvm-project\llvm\test\tools\llvm-cov/Inputs/trailing-zero-length-region-zero.proftext -o C:\_work\llvm-project\llvm-project\build\test\tools\llvm-cov\Output\trailing-zero-length-region.test.tmp.zero.profdata
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llvm-profdata.exe' merge 'C:\_work\llvm-project\llvm-project\llvm\test\tools\llvm-cov/Inputs/trailing-zero-length-region-zero.proftext' -o 'C:\_work\llvm-project\llvm-project\build\test\tools\llvm-cov\Output\trailing-zero-length-region.test.tmp.zero.profdata'
# note: command had no output on stdout or stderr
# RUN: at line 8
c:\_work\llvm-project\llvm-project\build\bin\llvm-cov.exe export --format=lcov C:\_work\llvm-project\llvm-project\llvm\test\tools\llvm-cov/Inputs/trailing-zero-length-region.covmapping -instr-profile C:\_work\llvm-project\llvm-project\build\test\tools\llvm-cov\Output\trailing-zero-length-region.test.tmp.zero.profdata | c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\tools\llvm-cov\trailing-zero-length-region.test --check-prefix=ZERO
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\llvm-cov.exe' export --format=lcov 'C:\_work\llvm-project\llvm-project\llvm\test\tools\llvm-cov/Inputs/trailing-zero-length-region.covmapping' -instr-profile 'C:\_work\llvm-project\llvm-project\build\test\tools\llvm-cov\Output\trailing-zero-length-region.test.tmp.zero.profdata'
# .---command stderr------------
# | error: failed to load coverage: 'C:\_work\llvm-project\llvm-project\llvm\test\tools\llvm-cov/Inputs/trailing-zero-length-region.covmapping': profile uses zlib compression but the profile reader was built without zlib support
# | error: could not load coverage information
# `-----------------------------
# error: command failed with exit status: 1
# executed command: 'c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe' 'C:\_work\llvm-project\llvm-project\llvm\test\tools\llvm-cov\trailing-zero-length-region.test' --check-prefix=ZERO
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line: c:\_work\llvm-project\llvm-project\build\bin\filecheck.exe C:\_work\llvm-project\llvm-project\llvm\test\tools\llvm-cov\trailing-zero-length-region.test --check-prefix=ZERO
# `-----------------------------
# error: command failed with exit status: 2
--
```
</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/227849
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