[llvm] Add AArch64 support to the premerge tests (PR #155274)

Tom Stellard via llvm-commits llvm-commits at lists.llvm.org
Wed Aug 27 13:29:35 PDT 2025 

https://github.com/tstellar updated https://github.com/llvm/llvm-project/pull/155274

>From 57697a66cfdddf2028c7260f1ce61ecacc550d00 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 17:15:36 +0000
Subject: [PATCH 01/42] Add AArch64 support to the premerge tests

---
 .github/workflows/premerge.yaml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 9d925517a7211..6d83573702a79 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -28,7 +28,13 @@ jobs:
     if: >-
         github.repository_owner == 'llvm' &&
         (github.event_name != 'pull_request' || github.event.action != 'closed')
-    runs-on: llvm-premerge-linux-runners
+    matrix:
+      runs-on:
+        - llvm-premerge-linux-runners
+        - depot-ubuntu-24.04-arm-64
+    runs-on: ${{ matrix.runs-on }}
+    container:
+      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && "ghcr.io/$GITHUB_REPOSITORY_OWNER/arm64v8/ci-ubuntu-24.04-agent" ) || null }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From 8ba375b2d80614f4a769af1b417bf21f1712786c Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 17:20:38 +0000
Subject: [PATCH 02/42] Fix typo

---
 .github/workflows/premerge.yaml | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 6d83573702a79..f88dbc6143ab4 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -28,10 +28,11 @@ jobs:
     if: >-
         github.repository_owner == 'llvm' &&
         (github.event_name != 'pull_request' || github.event.action != 'closed')
-    matrix:
-      runs-on:
-        - llvm-premerge-linux-runners
-        - depot-ubuntu-24.04-arm-64
+    strategy:
+      matrix:
+        runs-on:
+          - llvm-premerge-linux-runners
+          - depot-ubuntu-24.04-arm-64
     runs-on: ${{ matrix.runs-on }}
     container:
       image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && "ghcr.io/$GITHUB_REPOSITORY_OWNER/arm64v8/ci-ubuntu-24.04-agent" ) || null }}

>From af39d1af7635196606ceaeff6a2cf1db72e142e4 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 17:21:51 +0000
Subject: [PATCH 03/42] Fix quotes

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index f88dbc6143ab4..914713bb4a352 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -35,7 +35,7 @@ jobs:
           - depot-ubuntu-24.04-arm-64
     runs-on: ${{ matrix.runs-on }}
     container:
-      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && "ghcr.io/$GITHUB_REPOSITORY_OWNER/arm64v8/ci-ubuntu-24.04-agent" ) || null }}
+      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && 'ghcr.io/$GITHUB_REPOSITORY_OWNER/arm64v8/ci-ubuntu-24.04-agent' ) || null }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From 0330faf41115cab59d8667dbe77bf9414ea3455c Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 17:24:18 +0000
Subject: [PATCH 04/42] Fix container name

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 914713bb4a352..edb7248d792fe 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -35,7 +35,7 @@ jobs:
           - depot-ubuntu-24.04-arm-64
     runs-on: ${{ matrix.runs-on }}
     container:
-      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && 'ghcr.io/$GITHUB_REPOSITORY_OWNER/arm64v8/ci-ubuntu-24.04-agent' ) || null }}
+      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{}/arm64v8/ci-ubuntu-24.04-agent',github.repository_owner) ) || null }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From 0492ee60484cd594f80b6cadcb7ebc5755b6710c Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 17:29:25 +0000
Subject: [PATCH 05/42] Fix format string

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index edb7248d792fe..28d79518bc1df 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -35,7 +35,7 @@ jobs:
           - depot-ubuntu-24.04-arm-64
     runs-on: ${{ matrix.runs-on }}
     container:
-      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{}/arm64v8/ci-ubuntu-24.04-agent',github.repository_owner) ) || null }}
+      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04-agent',github.repository_owner) ) || null }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From 493970e0713105bf8fa11ac120e04031366dc9fd Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 18:54:40 +0000
Subject: [PATCH 06/42] Drop cpus

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 28d79518bc1df..061e00294ee5f 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -32,7 +32,7 @@ jobs:
       matrix:
         runs-on:
           - llvm-premerge-linux-runners
-          - depot-ubuntu-24.04-arm-64
+          - depot-ubuntu-24.04-arm-4
     runs-on: ${{ matrix.runs-on }}
     container:
       image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04-agent',github.repository_owner) ) || null }}

>From 7a419796b746f1facba1731f07abd947e7641f2a Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 19:02:41 +0000
Subject: [PATCH 07/42] Debug

---
 .github/workflows/premerge.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 061e00294ee5f..404640fd960a8 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -43,6 +43,7 @@ jobs:
           fetch-depth: 2
       - name: Build and Test
         run: |
+          cat $0
           git config --global --add safe.directory '*'
 
           source <(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)

>From 25c28a128fee05d2ff1db7fcd854e54275199b99 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 19:12:17 +0000
Subject: [PATCH 08/42] change containre

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 404640fd960a8..de13c596d6ebc 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -35,7 +35,7 @@ jobs:
           - depot-ubuntu-24.04-arm-4
     runs-on: ${{ matrix.runs-on }}
     container:
-      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04-agent',github.repository_owner) ) || null }}
+      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) ) || null }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From 766987cf1664dbb5df2beaec23cce37231c9b2b4 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 19:16:45 +0000
Subject: [PATCH 09/42] Use standard runners

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index de13c596d6ebc..b90a0c436c44f 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -32,7 +32,7 @@ jobs:
       matrix:
         runs-on:
           - llvm-premerge-linux-runners
-          - depot-ubuntu-24.04-arm-4
+          - ubuntu-24.04-arm
     runs-on: ${{ matrix.runs-on }}
     container:
       image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) ) || null }}

>From 5f12fa20044740c157b0440127fae38390ea211d Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 19:33:21 +0000
Subject: [PATCH 10/42] Drop containe

---
 .github/workflows/premerge.yaml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index b90a0c436c44f..41c1307feb143 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -33,9 +33,8 @@ jobs:
         runs-on:
           - llvm-premerge-linux-runners
           - ubuntu-24.04-arm
+          - depot-ubuntu-24.04-arm-4
     runs-on: ${{ matrix.runs-on }}
-    container:
-      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) ) || null }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From 31393e3f957aea5850d82a7c3b675f4c6952bac1 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 19:41:11 +0000
Subject: [PATCH 11/42] Debug image

---
 .github/workflows/premerge.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 41c1307feb143..02dce133a8010 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -35,6 +35,8 @@ jobs:
           - ubuntu-24.04-arm
           - depot-ubuntu-24.04-arm-4
     runs-on: ${{ matrix.runs-on }}
+    container:
+      image: format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner)
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From c7e1a036161919b2226cde9480a9ec241de70911 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 19:48:50 +0000
Subject: [PATCH 12/42] Debug image

---
 .github/workflows/premerge.yaml | 1 -
 1 file changed, 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 02dce133a8010..4794dc6881c4e 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -31,7 +31,6 @@ jobs:
     strategy:
       matrix:
         runs-on:
-          - llvm-premerge-linux-runners
           - ubuntu-24.04-arm
           - depot-ubuntu-24.04-arm-4
     runs-on: ${{ matrix.runs-on }}

>From f7ae102d6e0ffcd483edf8abf588f17a90811da6 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 19:50:24 +0000
Subject: [PATCH 13/42] Debug image

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 4794dc6881c4e..817604175a8ac 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -35,7 +35,7 @@ jobs:
           - depot-ubuntu-24.04-arm-4
     runs-on: ${{ matrix.runs-on }}
     container:
-      image: format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner)
+      image: ${{ format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From f6a5df8b5cb37c21de3f54ff0a95d27a09018f42 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 20:03:08 +0000
Subject: [PATCH 14/42] Debug containre

---
 .github/workflows/premerge.yaml | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 817604175a8ac..9bc0d4883d407 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -31,11 +31,10 @@ jobs:
     strategy:
       matrix:
         runs-on:
-          - ubuntu-24.04-arm
-          - depot-ubuntu-24.04-arm-4
+          - ubuntu-24.04
     runs-on: ${{ matrix.runs-on }}
     container:
-      image: ${{ format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) }}
+      image: ${{ format('ghcr.io/{0}/ci-ubuntu-24.04',github.repository_owner) }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From 452a347aae9ffcb789e64f534883f2d5fc32d703 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 20:14:20 +0000
Subject: [PATCH 15/42] Debug

---
 .github/workflows/premerge.yaml | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 9bc0d4883d407..4c7a3b6ce3356 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -32,14 +32,19 @@ jobs:
       matrix:
         runs-on:
           - ubuntu-24.04
+          - llvm-premerge-linux-runners
     runs-on: ${{ matrix.runs-on }}
-    container:
-      image: ${{ format('ghcr.io/{0}/ci-ubuntu-24.04',github.repository_owner) }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           fetch-depth: 2
+      - name: Debug
+        run: |
+          ls -ltr /bin/sh/
+      - name: Debug2
+        run: |
+          source <(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)
       - name: Build and Test
         run: |
           cat $0

>From 79e6def3c18e376e2ef85ed488c73c49cf7c86ab Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 20:16:13 +0000
Subject: [PATCH 16/42] Debug

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 4c7a3b6ce3356..7bdfc94264632 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -41,7 +41,7 @@ jobs:
           fetch-depth: 2
       - name: Debug
         run: |
-          ls -ltr /bin/sh/
+          ls -ltr /usr/bin/sh
       - name: Debug2
         run: |
           source <(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)

>From a827aa786cc6b6dc6bebeffe01a2e93c63484cc0 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 20:40:30 +0000
Subject: [PATCH 17/42] Debug containr

---
 .github/workflows/premerge.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 7bdfc94264632..c3903f5483a23 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -34,6 +34,8 @@ jobs:
           - ubuntu-24.04
           - llvm-premerge-linux-runners
     runs-on: ${{ matrix.runs-on }}
+    container:
+      image: ${{ (startsWith(matrix.runs-on, 'ubuntu-24.04') && format('ghcr.io/{0}/ci-ubuntu-24.04',github.repository_owner) ) || null }}
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From ef27441eb066ab1b92d6139b189b70bc51f4c373 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 20:46:19 +0000
Subject: [PATCH 18/42] Debug containr

---
 .github/workflows/premerge.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index c3903f5483a23..fc18b4766a684 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -44,6 +44,13 @@ jobs:
       - name: Debug
         run: |
           ls -ltr /usr/bin/sh
+      -name: Debug
+        run: |
+          git diff --name-only HEAD~1...HEAD
+          python3 .ci/compute_projects.py
+      - name: Debug2
+        run: |
+          source <$(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)
       - name: Debug2
         run: |
           source <(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)

>From 0b85fe15139f86c93f61aefdfcd96738eba1812e Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 20:47:40 +0000
Subject: [PATCH 19/42] Fix typo

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index fc18b4766a684..c9ca432cc5bcf 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -44,7 +44,7 @@ jobs:
       - name: Debug
         run: |
           ls -ltr /usr/bin/sh
-      -name: Debug
+      - name: Debug
         run: |
           git diff --name-only HEAD~1...HEAD
           python3 .ci/compute_projects.py

>From 6fe200853a29723fbfe738536590775054b1737d Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 21:02:33 +0000
Subject: [PATCH 20/42] Fix typo

---
 .github/workflows/premerge.yaml | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index c9ca432cc5bcf..6facef37d6cdc 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -48,9 +48,6 @@ jobs:
         run: |
           git diff --name-only HEAD~1...HEAD
           python3 .ci/compute_projects.py
-      - name: Debug2
-        run: |
-          source <$(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)
       - name: Debug2
         run: |
           source <(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)

>From 0a082cb7b9b93f88e3e6250ee0b19f4c303e5519 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 21:09:52 +0000
Subject: [PATCH 21/42] More debug

---
 .github/workflows/premerge.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 6facef37d6cdc..75002a590f5a3 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -48,6 +48,9 @@ jobs:
         run: |
           git diff --name-only HEAD~1...HEAD
           python3 .ci/compute_projects.py
+      - name: Interpreter
+        run: |
+          ps -p $$ | awk '$1 != "PID" {print $(NF)}'
       - name: Debug2
         run: |
           source <(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)

>From 2e1badd7528519f63da28aa1094f5a2f25c17c62 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 22:31:28 +0000
Subject: [PATCH 22/42] Fix

---
 .github/workflows/premerge.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 75002a590f5a3..2fcff6f7057be 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -36,6 +36,12 @@ jobs:
     runs-on: ${{ matrix.runs-on }}
     container:
       image: ${{ (startsWith(matrix.runs-on, 'ubuntu-24.04') && format('ghcr.io/{0}/ci-ubuntu-24.04',github.repository_owner) ) || null }}
+    defaults:
+      run:
+        # The run step defaults to using sh as the shell when running in a
+        # container, so make bash the default to ensure consistency between
+        # container and non-container jobs.
+        shell: bash
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0

>From 92a0d64b56d7dba07e6b8125f8ff83a52e1678bd Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 22:34:40 +0000
Subject: [PATCH 23/42] Switch to depot runners

---
 .github/workflows/premerge.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 2fcff6f7057be..4e42dbdf35597 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -31,11 +31,11 @@ jobs:
     strategy:
       matrix:
         runs-on:
-          - ubuntu-24.04
+          - depot-ubuntu-24.04-arm-4
           - llvm-premerge-linux-runners
     runs-on: ${{ matrix.runs-on }}
     container:
-      image: ${{ (startsWith(matrix.runs-on, 'ubuntu-24.04') && format('ghcr.io/{0}/ci-ubuntu-24.04',github.repository_owner) ) || null }}
+      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm-16') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) ) || null }}
     defaults:
       run:
         # The run step defaults to using sh as the shell when running in a

>From 05823e9b01c541a1fe93bdf910788f3e0929cfc9 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 22:35:20 +0000
Subject: [PATCH 24/42] Remove debugging

---
 .github/workflows/premerge.yaml | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 4e42dbdf35597..2f9b8a922760c 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -47,22 +47,8 @@ jobs:
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           fetch-depth: 2
-      - name: Debug
-        run: |
-          ls -ltr /usr/bin/sh
-      - name: Debug
-        run: |
-          git diff --name-only HEAD~1...HEAD
-          python3 .ci/compute_projects.py
-      - name: Interpreter
-        run: |
-          ps -p $$ | awk '$1 != "PID" {print $(NF)}'
-      - name: Debug2
-        run: |
-          source <(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)
       - name: Build and Test
         run: |
-          cat $0
           git config --global --add safe.directory '*'
 
           source <(git diff --name-only HEAD~1...HEAD | python3 .ci/compute_projects.py)

>From 0f11e408b4ce79834c1f010f713711ced3e3c5cb Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 22:36:55 +0000
Subject: [PATCH 25/42] Test for CI

---
 llvm/README.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/README.txt b/llvm/README.txt
index b9b71a3b6daff..2e35844e9e3a6 100644
--- a/llvm/README.txt
+++ b/llvm/README.txt
@@ -15,3 +15,5 @@ documentation setup.
 
 If you are writing a package for LLVM, see docs/Packaging.rst for our
 suggestions.
+
+Test for CI.

>From 9fca728b0779b792408f9953cef08928ead8f0e2 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 22:46:41 +0000
Subject: [PATCH 26/42] Add in sccache

---
 .github/workflows/premerge.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 2f9b8a922760c..d77e983b4c7a9 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -47,6 +47,15 @@ jobs:
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           fetch-depth: 2
+
+      - name: Setup sccache
+        uses: hendrikmuhs/ccache-action at a1209f81afb8c005c13b4296c32e363431bffea5 # v1.2.17
+        if: startsWith(matrix.runs-on, 'depot')
+        with:
+          max-size: 8G
+          key: ${{ matrix.runs-on }}
+          variant: sccache
+
       - name: Build and Test
         run: |
           git config --global --add safe.directory '*'

>From 8ff572d966319942798a48b20996ae7e9a3b812e Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 22:54:36 +0000
Subject: [PATCH 27/42] Disable sccache setup

---
 .github/workflows/premerge.yaml | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index d77e983b4c7a9..1171dcba1d45f 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -76,18 +76,21 @@ jobs:
           export CC=/opt/llvm/bin/clang
           export CXX=/opt/llvm/bin/clang++
 
-          # This environment variable is passes into the container through the
-          # runner pod definition. This differs between our two clusters which
-          # why we do not hardcode it.
-          export SCCACHE_GCS_BUCKET=$CACHE_GCS_BUCKET
-          export SCCACHE_GCS_RW_MODE=READ_WRITE
-
-          # Set the idle timeout to zero to ensure sccache runs for the
-          # entire duration of the job. Otherwise it might stop if we run
-          # several test suites in a row and discard statistics that we want
-          # to save in the end.
-          export SCCACHE_IDLE_TIMEOUT=0
-          sccache --start-server
+          if ! [[ "${{ matrix.runs_on }}" =~ "^depot" ]; then
+
+            # This environment variable is passes into the container through the
+            # runner pod definition. This differs between our two clusters which
+            # why we do not hardcode it.
+            export SCCACHE_GCS_BUCKET=$CACHE_GCS_BUCKET
+            export SCCACHE_GCS_RW_MODE=READ_WRITE
+
+            # Set the idle timeout to zero to ensure sccache runs for the
+            # entire duration of the job. Otherwise it might stop if we run
+            # several test suites in a row and discard statistics that we want
+            # to save in the end.
+            export SCCACHE_IDLE_TIMEOUT=0
+            sccache --start-server
+          fi
 
           ./.ci/monolithic-linux.sh "${projects_to_build}" "${project_check_targets}" "${runtimes_to_build}" "${runtimes_check_targets}" "${runtimes_check_targets_needs_reconfig}" "${enable_cir}"
       - name: Upload Artifacts

>From 7eab71cb29aaecaaa23747427de440d03baf8d9b Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:00:05 +0000
Subject: [PATCH 28/42] Fix typo

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 1171dcba1d45f..a561da0163fc3 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -76,7 +76,7 @@ jobs:
           export CC=/opt/llvm/bin/clang
           export CXX=/opt/llvm/bin/clang++
 
-          if ! [[ "${{ matrix.runs_on }}" =~ "^depot" ]; then
+          if ! [[ "${{ matrix.runs_on }}" =~ "^depot" ]]; then
 
             # This environment variable is passes into the container through the
             # runner pod definition. This differs between our two clusters which

>From fce2dc7f438d80a815f65f7b0e575e48a85ca9fd Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:06:50 +0000
Subject: [PATCH 29/42] fix typo

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index a561da0163fc3..51d4d7c4920f3 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -76,7 +76,7 @@ jobs:
           export CC=/opt/llvm/bin/clang
           export CXX=/opt/llvm/bin/clang++
 
-          if ! [[ "${{ matrix.runs_on }}" =~ "^depot" ]]; then
+          if ! [[ "${{ matrix.runs-on }}" =~ "^depot" ]]; then
 
             # This environment variable is passes into the container through the
             # runner pod definition. This differs between our two clusters which

>From 47242649a86b6c39259d0fe2b5770a3b9ff1f62a Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:09:44 +0000
Subject: [PATCH 30/42] Debug

---
 .github/workflows/premerge.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 51d4d7c4920f3..3859f9a10b1d2 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -78,6 +78,7 @@ jobs:
 
           if ! [[ "${{ matrix.runs-on }}" =~ "^depot" ]]; then
 
+            echo "STARTING SCCACHE"
             # This environment variable is passes into the container through the
             # runner pod definition. This differs between our two clusters which
             # why we do not hardcode it.

>From 5a68096a777d84abc047ac010ca2ad58f0997231 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:15:01 +0000
Subject: [PATCH 31/42] Fix regex

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 3859f9a10b1d2..ce690db24420a 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -76,7 +76,7 @@ jobs:
           export CC=/opt/llvm/bin/clang
           export CXX=/opt/llvm/bin/clang++
 
-          if ! [[ "${{ matrix.runs-on }}" =~ "^depot" ]]; then
+          if ! [[ "${{ matrix.runs-on }}" =~ ^depot.* ]]; then
 
             echo "STARTING SCCACHE"
             # This environment variable is passes into the container through the

>From 12913f6b7330923f889f6e4c5b19d74329280375 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:18:48 +0000
Subject: [PATCH 32/42] fix with containers

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index ce690db24420a..5486aa33c9124 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -35,7 +35,7 @@ jobs:
           - llvm-premerge-linux-runners
     runs-on: ${{ matrix.runs-on }}
     container:
-      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm-16') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) ) || null }}
+      image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) ) || null }}
     defaults:
       run:
         # The run step defaults to using sh as the shell when running in a

>From 62c28bf298ad72b19fa96745ed713ea8be1cb4c6 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:36:13 +0000
Subject: [PATCH 33/42] Try to fix bash

---
 .github/workflows/premerge.yaml | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 5486aa33c9124..4e1e7e08bd8a9 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -36,12 +36,6 @@ jobs:
     runs-on: ${{ matrix.runs-on }}
     container:
       image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) ) || null }}
-    defaults:
-      run:
-        # The run step defaults to using sh as the shell when running in a
-        # container, so make bash the default to ensure consistency between
-        # container and non-container jobs.
-        shell: bash
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
@@ -57,6 +51,10 @@ jobs:
           variant: sccache
 
       - name: Build and Test
+        # The run step defaults to using sh as the shell when running in a
+        # container, so make bash the default to ensure consistency between
+        # container and non-container jobs.
+        shell: bash
         run: |
           git config --global --add safe.directory '*'
 

>From 66b9eea3e56138164c8ef77af097d225644c2623 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:45:43 +0000
Subject: [PATCH 34/42] Fix sccache

---
 .github/workflows/premerge.yaml | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 4e1e7e08bd8a9..b17401f54bbf1 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -36,12 +36,22 @@ jobs:
     runs-on: ${{ matrix.runs-on }}
     container:
       image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) ) || null }}
+    defaults:
+      run:
+        # The run step defaults to using sh as the shell when running in a
+        # container, so make bash the default to ensure consistency between
+        # container and non-container jobs.
+        shell: bash
     steps:
       - name: Checkout LLVM
         uses: actions/checkout at 08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         with:
           fetch-depth: 2
 
+      - name: HACK - Remove SCCACHE
+        run: |
+          rm -Rf /usr/local/bin/sccache
+
       - name: Setup sccache
         uses: hendrikmuhs/ccache-action at a1209f81afb8c005c13b4296c32e363431bffea5 # v1.2.17
         if: startsWith(matrix.runs-on, 'depot')
@@ -51,10 +61,6 @@ jobs:
           variant: sccache
 
       - name: Build and Test
-        # The run step defaults to using sh as the shell when running in a
-        # container, so make bash the default to ensure consistency between
-        # container and non-container jobs.
-        shell: bash
         run: |
           git config --global --add safe.directory '*'
 

>From bf0a79f5a864c22516e9378803909796a2f71bfd Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:48:23 +0000
Subject: [PATCH 35/42] Fix sccache

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index b17401f54bbf1..569cd96d4c031 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -50,7 +50,7 @@ jobs:
 
       - name: HACK - Remove SCCACHE
         run: |
-          rm -Rf /usr/local/bin/sccache
+          sudo rm -Rf /usr/local/bin/sccache
 
       - name: Setup sccache
         uses: hendrikmuhs/ccache-action at a1209f81afb8c005c13b4296c32e363431bffea5 # v1.2.17

>From 33606309517ab4bcd87babc92688f7e7210bb3a3 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:50:53 +0000
Subject: [PATCH 36/42] Disable sccache

---
 .ci/monolithic-linux.sh         |  2 --
 .github/workflows/premerge.yaml | 12 ------------
 2 files changed, 14 deletions(-)

diff --git a/.ci/monolithic-linux.sh b/.ci/monolithic-linux.sh
index 3ca4d05f4c891..dcf84d2f79bef 100755
--- a/.ci/monolithic-linux.sh
+++ b/.ci/monolithic-linux.sh
@@ -54,8 +54,6 @@ cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
       -D LLVM_LIT_ARGS="${lit_args}" \
       -D LLVM_ENABLE_LLD=ON \
       -D CMAKE_CXX_FLAGS=-gmlt \
-      -D CMAKE_C_COMPILER_LAUNCHER=sccache \
-      -D CMAKE_CXX_COMPILER_LAUNCHER=sccache \
       -D LIBCXX_CXX_ABI=libcxxabi \
       -D MLIR_ENABLE_BINDINGS_PYTHON=ON \
       -D LLDB_ENABLE_PYTHON=ON \
diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 569cd96d4c031..5ae5522383042 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -48,18 +48,6 @@ jobs:
         with:
           fetch-depth: 2
 
-      - name: HACK - Remove SCCACHE
-        run: |
-          sudo rm -Rf /usr/local/bin/sccache
-
-      - name: Setup sccache
-        uses: hendrikmuhs/ccache-action at a1209f81afb8c005c13b4296c32e363431bffea5 # v1.2.17
-        if: startsWith(matrix.runs-on, 'depot')
-        with:
-          max-size: 8G
-          key: ${{ matrix.runs-on }}
-          variant: sccache
-
       - name: Build and Test
         run: |
           git config --global --add safe.directory '*'

>From 51216e7bb86e46e15b34f797f7e20ba186465873 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Mon, 25 Aug 2025 23:53:50 +0000
Subject: [PATCH 37/42] Disable sccache

---
 .ci/utils.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.ci/utils.sh b/.ci/utils.sh
index 2a3d2426b630a..93c281b43851c 100644
--- a/.ci/utils.sh
+++ b/.ci/utils.sh
@@ -18,14 +18,14 @@ BUILD_DIR="${BUILD_DIR:=${MONOREPO_ROOT}/build}"
 
 rm -rf "${BUILD_DIR}"
 
-sccache --zero-stats
+#sccache --zero-stats
 
 function at-exit {
   retcode=$?
 
   mkdir -p artifacts
-  sccache --show-stats
-  sccache --show-stats >> artifacts/sccache_stats.txt
+  #sccache --show-stats
+  #sccache --show-stats >> artifacts/sccache_stats.txt
   cp "${BUILD_DIR}"/.ninja_log artifacts/.ninja_log
   cp "${MONOREPO_ROOT}"/*.log artifacts/ || :
   cp "${BUILD_DIR}"/test-results.*.xml artifacts/ || :

>From 8b5162a75844eb3f461cbd2eaceaadf0e3fb3b06 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Wed, 27 Aug 2025 16:59:44 +0000
Subject: [PATCH 38/42] Fix lldb tests and use a bigger machine

---
 .github/workflows/premerge.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 5ae5522383042..16b2171bb44f3 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -31,11 +31,12 @@ jobs:
     strategy:
       matrix:
         runs-on:
-          - depot-ubuntu-24.04-arm-4
+          - depot-ubuntu-24.04-arm-64
           - llvm-premerge-linux-runners
     runs-on: ${{ matrix.runs-on }}
     container:
       image: ${{ (startsWith(matrix.runs-on, 'depot-ubuntu-24.04-arm') && format('ghcr.io/{0}/arm64v8/ci-ubuntu-24.04',github.repository_owner) ) || null }}
+      options: --privileged
     defaults:
       run:
         # The run step defaults to using sh as the shell when running in a

>From 428257950069d1f05e769308fd46b20d1538aced Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Wed, 27 Aug 2025 18:53:57 +0000
Subject: [PATCH 39/42] Add fast-fail

---
 .github/workflows/premerge.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 220803d74286f..51772b04f68e1 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -29,6 +29,7 @@ jobs:
         github.repository_owner == 'llvm' &&
         (github.event_name != 'pull_request' || github.event.action != 'closed')
     strategy:
+      fast-fail: false
       matrix:
         runs-on:
           - depot-ubuntu-24.04-arm-64

>From 079c4b133dcd693e00d531420b22d4bee1a0a11d Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Wed, 27 Aug 2025 18:57:18 +0000
Subject: [PATCH 40/42] Fix typo

---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 51772b04f68e1..f9426fc8ac42d 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -29,7 +29,7 @@ jobs:
         github.repository_owner == 'llvm' &&
         (github.event_name != 'pull_request' || github.event.action != 'closed')
     strategy:
-      fast-fail: false
+      fail-fast: false
       matrix:
         runs-on:
           - depot-ubuntu-24.04-arm-64

>From c972560d17cb79a8e92eef2896e00232121e0d05 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Wed, 27 Aug 2025 20:25:25 +0000
Subject: [PATCH 41/42] Revert "Disable sccache"

This reverts commit 33606309517ab4bcd87babc92688f7e7210bb3a3.
---
 .ci/monolithic-linux.sh         |  2 ++
 .github/workflows/premerge.yaml | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/.ci/monolithic-linux.sh b/.ci/monolithic-linux.sh
index dcf84d2f79bef..3ca4d05f4c891 100755
--- a/.ci/monolithic-linux.sh
+++ b/.ci/monolithic-linux.sh
@@ -54,6 +54,8 @@ cmake -S "${MONOREPO_ROOT}"/llvm -B "${BUILD_DIR}" \
       -D LLVM_LIT_ARGS="${lit_args}" \
       -D LLVM_ENABLE_LLD=ON \
       -D CMAKE_CXX_FLAGS=-gmlt \
+      -D CMAKE_C_COMPILER_LAUNCHER=sccache \
+      -D CMAKE_CXX_COMPILER_LAUNCHER=sccache \
       -D LIBCXX_CXX_ABI=libcxxabi \
       -D MLIR_ENABLE_BINDINGS_PYTHON=ON \
       -D LLDB_ENABLE_PYTHON=ON \
diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index f9426fc8ac42d..58463ce914079 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -50,6 +50,18 @@ jobs:
         with:
           fetch-depth: 2
 
+      - name: HACK - Remove SCCACHE
+        run: |
+          sudo rm -Rf /usr/local/bin/sccache
+
+      - name: Setup sccache
+        uses: hendrikmuhs/ccache-action at a1209f81afb8c005c13b4296c32e363431bffea5 # v1.2.17
+        if: startsWith(matrix.runs-on, 'depot')
+        with:
+          max-size: 8G
+          key: ${{ matrix.runs-on }}
+          variant: sccache
+
       - name: Build and Test
         run: |
           git config --global --add safe.directory '*'

>From ac5e6fe7b48a4c6ee7cc9b20fea127d516b7c5c0 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Wed, 27 Aug 2025 20:26:25 +0000
Subject: [PATCH 42/42] Remove ccache hack

---
 .github/workflows/premerge.yaml | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index 58463ce914079..a588c256d6e16 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -50,10 +50,6 @@ jobs:
         with:
           fetch-depth: 2
 
-      - name: HACK - Remove SCCACHE
-        run: |
-          sudo rm -Rf /usr/local/bin/sccache
-
       - name: Setup sccache
         uses: hendrikmuhs/ccache-action at a1209f81afb8c005c13b4296c32e363431bffea5 # v1.2.17
         if: startsWith(matrix.runs-on, 'depot')

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