Improve file patterns for some backends.

[pcc]

I noticed that one of my PRs, #147624, did not get automatically
labelled with backend:RISC-V when it touched a test under
llvm/test/CodeGen/RISCV. This seems to be because the pattern only
looks for files named *RISCV* or `riscv and not necessarily files
in a directory named like that. To fix that, let's make RISC-V use
a more accepting pattern, similar to AMDGPU, and do the same for two
other backends.

[llvmbot]

@llvm/pr-subscribers-github-workflow

Author: Peter Collingbourne (pcc)

Changes

I noticed that one of my PRs, #147624, did not get automatically
labelled with backend:RISC-V when it touched a test under
llvm/test/CodeGen/RISCV. This seems to be because the pattern only
looks for files named *RISCV* or `riscv and not necessarily files
in a directory named like that. To fix that, let's make RISC-V use
a more accepting pattern, similar to AMDGPU, and do the same for two
other backends.

---

Full diff: https://github.com/llvm/llvm-project/pull/147633.diff

1 Files Affected:

• (modified) .github/new-prs-labeler.yml (+10-8)

diff --git a/.github/new-prs-labeler.yml b/.github/new-prs-labeler.yml
index 863090af9af7e..b05e9c6c56ed0 100644
--- a/.github/new-prs-labeler.yml
+++ b/.github/new-prs-labeler.yml
@@ -784,18 +784,20 @@ backend:NVPTX:
 backend:MIPS:
   - '**/*mips*'
   - '**/*Mips*'
+  - '**/*mips*/**'
+  - '**/*Mips*/**'
 
 backend:RISC-V:
-  - clang/**/*riscv*
-  - clang/**/*RISCV*
-  - llvm/**/*riscv*
-  - llvm/**/*RISCV*
+  - '**/*riscv*'
+  - '**/*RISCV*'
+  - '**/*riscv*/**'
+  - '**/*RISCV*/**'
 
 backend:Xtensa:
-  - clang/**/*xtensa*
-  - clang/**/*Xtensa*
-  - llvm/**/*xtensa*
-  - llvm/**/*Xtensa*
+  - '**/*xtensa*'
+  - '**/*Xtensa*'
+  - '**/*xtensa*/**'
+  - '**/*Xtensa*/**'
 
 lld:coff:
   - lld/**/COFF/**

[arsenm]

Does ** only work after a /?

[pcc]

Not sure, I was just cargo culting AMDGPU. https://github.com/actions/labeler doesn't say that anything besides ** works.

[boomanaiden154]

I believe the underlying implementation is https://github.com/isaacs/minimatch#minimatch, so whatever works there.

[pcc]

There don't seem to be any tests in that repository that test whether ** not on its own also matches /, so I assume it doesn't work.