feat: update to LLVM 19 (#310)

Author: hedgar2017

.cargo/config.toml

@@ -20,14 +20,14 @@ rustflags = [
 linker = "rust-lld"
 
 [target.aarch64-unknown-linux-musl.compiler-rt-zksolc]
-rustc-link-search = ["./target-llvm/target-host/lib/clang/17/lib/aarch64-unknown-linux-musl"]
+rustc-link-search = ["./target-llvm/target-host/lib/clang/19/lib/aarch64-unknown-linux-musl"]
 rustc-link-lib = ["clang_rt.builtins"]
 
 [profile.release]
 strip = true
 
 [env]
-LLVM_SYS_170_PREFIX = { value = "./target-llvm/target-final/", relative = true, force = false }
+LLVM_SYS_191_PREFIX = { value = "./target-llvm/target-final/", relative = true, force = false }
 
 [tools.clippy]
 warn = [

.github/workflows/ccache-regen.yaml

@@ -77,7 +77,7 @@ jobs:
         with:
           repository: 'llvm/llvm-project'
           path: 'llvm-host'
-          ref: 'llvmorg-17.0.6'
+          ref: 'llvmorg-19.1.7'
           fetch-depth: '1'
 
       - name: Prepare Windows env

.github/workflows/release.yaml

@@ -127,7 +127,7 @@ jobs:
         with:
           repository: 'llvm/llvm-project'
           path: 'llvm-host'
-          ref: 'llvmorg-17.0.6'
+          ref: 'llvmorg-19.1.7'
           fetch-depth: '1'
 
       - name: Prepare Windows env

.github/workflows/test.yaml

@@ -100,7 +100,7 @@ jobs:
         with:
           repository: 'llvm/llvm-project'
           path: 'llvm-host'
-          ref: 'llvmorg-17.0.6'
+          ref: 'llvmorg-19.1.7'
           fetch-depth: '1'
 
       - name: Prepare Windows env

.gitmodules

@@ -1,5 +1,5 @@
 [submodule "llvm"]
     path = llvm
     url = https://github.com/matter-labs/era-compiler-llvm
-    branch = main
+    branch = dborisenkov-llvm19
     update = none

CHANGELOG.md

@@ -1,5 +1,12 @@
 # The `zksolc` changelog
 
+## [Unreleased]
+
+### Changed
+
+- Updated to LLVM v19.1
+- Updated to Rust v1.86.0
+
 ## [1.5.13] - 2025-04-07
 
 ### Added
@@ -270,7 +277,7 @@
 
 ### Changed
 
-- Updated to LLVM 17
+- Updated to LLVM v17.0
 
 ### Fixed