From 7e093daf29b2ea6a96aada97d632239d7d905363 Mon Sep 17 00:00:00 2001
From: Andrey Kolkov <a.kolkov@gmail.com>
Date: Fri, 21 Aug 2026 13:42:05 +0300
Subject: [PATCH 1/3] =?UTF-8?q?chore:=20upgrade=20Go=20toolchain=201.25.4?=
 =?UTF-8?q?=20=E2=86=92=201.27.0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Go 1.27 compiler improvements: known-bits dataflow, LICM (10% on
regexp/syntax loops), switch-to-lookup-table. All tests pass,
assembly fully compatible, zero breaking changes.
---
 go.mod | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/go.mod b/go.mod
index d91922e..89bc10b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/coregx/coregex
 
-go 1.25.4
+go 1.27.0
 
 require (
 	github.com/coregx/ahocorasick v0.3.1

From 1ab562da0962bc4a25b1564ac7fca70ff2b4162f Mon Sep 17 00:00:00 2001
From: Andrey Kolkov <a.kolkov@gmail.com>
Date: Fri, 21 Aug 2026 13:53:00 +0300
Subject: [PATCH 2/3] =?UTF-8?q?chore:=20upgrade=20Go=20toolchain=201.25.4?=
 =?UTF-8?q?=20=E2=86=92=201.27.1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Go 1.27.1 (Sep 1, 2026) includes fixes for simd/archsimd packages.
Compiler improvements: known-bits dataflow, LICM, switch-to-lookup-table.
All tests pass, assembly fully compatible, zero breaking changes.
---
 .github/workflows/benchmarks.yml |  2 +-
 .github/workflows/test.yml       | 16 ++++++++--------
 go.mod                           |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index c7804e7..d01506f 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -48,7 +48,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: '1.25'
+        go-version: '1.27'
         cache: false  # Different directories, cache won't help
 
     - name: Install benchstat
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bdccf21..685862b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -3,7 +3,7 @@ name: Tests
 # Testing Strategy:
 # - Tests run on Linux, macOS, and Windows (cross-platform library)
 # - Regex engine with SIMD assembly - must work everywhere
-# - Go 1.25+ required (matches go.mod requirement)
+# - Go 1.27+ required (matches go.mod requirement)
 # - Zero external dependencies (except golang.org/x/sys for CPU detection)
 #
 # Branch Strategy (Git Flow):
@@ -32,7 +32,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        go-version: ['1.25']  # Match go.mod requirement
+        go-version: ['1.27']  # Match go.mod requirement
 
     steps:
     - name: Checkout code
@@ -59,7 +59,7 @@ jobs:
       run: go test -short -v -race -coverprofile=coverage.txt -covermode=atomic ./...
 
     - name: Upload coverage to Codecov
-      if: matrix.os == 'ubuntu-latest' && matrix.go-version == '1.25'
+      if: matrix.os == 'ubuntu-latest' && matrix.go-version == '1.27'
       uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
@@ -81,7 +81,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: '1.25'
+        go-version: '1.27'
         cache: true
 
     - name: Build for 386
@@ -102,13 +102,13 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: '1.25'
+        go-version: '1.27'
         cache: true
 
     - name: Run golangci-lint
       uses: golangci/golangci-lint-action@v9
       with:
-        version: v2.10
+        version: v2.13
         args: --timeout=5m
 
   # Formatting check
@@ -123,7 +123,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: '1.25'
+        go-version: '1.27'
         cache: true
 
     - name: Check formatting
@@ -153,7 +153,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v5
       with:
-        go-version: '1.25'
+        go-version: '1.27'
         cache: true
 
     - name: Run benchmark smoke test
diff --git a/go.mod b/go.mod
index 89bc10b..92c701c 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/coregx/coregex
 
-go 1.27.0
+go 1.27.1
 
 require (
 	github.com/coregx/ahocorasick v0.3.1

From b850bdd71a0ae7531d6ce6eaf1af1d5bae2dbcb2 Mon Sep 17 00:00:00 2001
From: Andrey Kolkov <a.kolkov@gmail.com>
Date: Sun, 6 Sep 2026 13:32:17 +0300
Subject: [PATCH 3/3] ci: remove Go version from job names (stable branch
 protection)

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

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 685862b..aaea6f4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,7 +27,7 @@ on:
 jobs:
   # Unit tests - Cross-platform
   unit-tests:
-    name: Unit Tests - ${{ matrix.os }} - Go ${{ matrix.go-version }}
+    name: Unit Tests - ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -59,7 +59,7 @@ jobs:
       run: go test -short -v -race -coverprofile=coverage.txt -covermode=atomic ./...
 
     - name: Upload coverage to Codecov
-      if: matrix.os == 'ubuntu-latest' && matrix.go-version == '1.27'
+      if: matrix.os == 'ubuntu-latest'
       uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}