Add support for LLVM 20

Support for recursive types was removed in LLVM 20, so let's also remove
the test for those.

Author: aykevl

.github/workflows/test.yml

@@ -10,31 +10,32 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        llvm: [14, 15, 16, 17, 18, 19]
+        llvm: [14, 15, 16, 17, 18, 19, 20]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
           go-version: '1.22'
-      #- name: Update Homebrew
-      #  if: matrix.llvm == 17 # needed as long as LLVM 17 is still fresh
-      #  run: brew update
+      # Optional step when a LLVM version is very new.
+      - name: Update Homebrew
+        if: matrix.llvm == 20
+        run: brew update
       - name: Install LLVM
         run: HOMEBREW_NO_AUTO_UPDATE=1 brew install llvm@${{ matrix.llvm }}
       - name: Test LLVM ${{ matrix.llvm }}
         run:
           go test -v -tags=llvm${{ matrix.llvm }}
       - name: Test default LLVM
-        if: matrix.llvm == 19
+        if: matrix.llvm == 20
         run:
           go test -v
   test-linux:
     runs-on: ubuntu-22.04
     strategy:
       matrix:
-        llvm: [14, 15, 16, 17, 18, 19]
+        llvm: [14, 15, 16, 17, 18, 19, 20]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -52,6 +53,6 @@ jobs:
         run:
           go test -v -tags=llvm${{ matrix.llvm }}
       - name: Test default LLVM
-        if: matrix.llvm == 19
+        if: matrix.llvm == 20
         run:
           go test -v

README.markdown

@@ -4,10 +4,9 @@ This library provides bindings to a system-installed LLVM.
 
 Currently supported:
 
-  * LLVM 19, 18, 17, 16, 15 and 14 from [apt.llvm.org](http://apt.llvm.org/) on Debian/Ubuntu.
-  * LLVM 19, 18, 17, 16, 15 and 14 from Homebrew on macOS.
-  * LLVM 19 with a manually built LLVM through the `byollvm` build tag. You
-    need to set up `CFLAGS`/`LDFLAGS` etc yourself in this case.
+  * LLVM 20, 19, 18, 17, 16, 15 and 14 from [apt.llvm.org](http://apt.llvm.org/) on Debian/Ubuntu.
+  * LLVM 20, 19, 18, 17, 16, 15 and 14 from Homebrew on macOS.
+  * Any of the above versions with a manually built LLVM through the `byollvm` build tag. You need to set up `CFLAGS`/`LDFLAGS` etc yourself in this case.
 
 You can select the LLVM version using a build tag, for example `-tags=llvm17`
 to use LLVM 17.

llvm_config_darwin_llvm19.go

@@ -1,4 +1,4 @@
-//go:build !byollvm && darwin && !llvm14 && !llvm15 && !llvm16 && !llvm17 && !llvm18
+//go:build !byollvm && darwin && llvm19
 
 package llvm
 

llvm_config_darwin_llvm20.go

@@ -0,0 +1,15 @@
+//go:build !byollvm && darwin && !llvm14 && !llvm15 && !llvm16 && !llvm17 && !llvm18 && !llvm19
+
+package llvm
+
+// Automatically generated by `make config BUILDDIR=`, do not edit.
+
+// #cgo amd64 CPPFLAGS: -I/usr/local/opt/llvm@20/include   -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
+// #cgo amd64 CXXFLAGS: -std=c++17
+// #cgo amd64 LDFLAGS: -L/usr/local/opt/llvm@20/lib -Wl,-search_paths_first -Wl,-headerpad_max_install_names -lLLVM -lz -lm
+// #cgo arm64 CPPFLAGS: -I/opt/homebrew/opt/llvm@20/include   -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
+// #cgo arm64 CXXFLAGS: -std=c++17
+// #cgo arm64 LDFLAGS: -L/opt/homebrew/opt/llvm@20/lib -Wl,-search_paths_first -Wl,-headerpad_max_install_names -lLLVM -lz -lm
+import "C"
+
+type run_build_sh int

llvm_config_linux_llvm19.go

@@ -1,4 +1,4 @@
-//go:build !byollvm && linux && !llvm14 && !llvm15 && !llvm16 && !llvm17 && !llvm18
+//go:build !byollvm && linux && llvm19
 
 package llvm
 

llvm_config_linux_llvm20.go

@@ -0,0 +1,10 @@
+//go:build !byollvm && linux && !llvm14 && !llvm15 && !llvm16 && !llvm17 && !llvm18 && !llvm19
+
+package llvm
+
+// #cgo CPPFLAGS: -I/usr/include/llvm-20 -I/usr/include/llvm-c-20 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
+// #cgo CXXFLAGS: -std=c++17
+// #cgo LDFLAGS: -L/usr/lib/llvm-20/lib -lLLVM-20
+import "C"
+
+type run_build_sh int