stage2: update LLVM backend to for LLVM 13

There was some new code in master branch enumerating all the targets and
a new target was added so we needed to add the glue code.

This commit also introduces some build options to support experimental
LLVM targets.

1 files changed, 28 insertions, 0 deletions

diff --git a/build.zig b/build.zig
index e2665557b8..8bbf06e83a 100644
--- a/build.zig
+++ b/build.zig
@@ -64,6 +64,26 @@ pub fn build(b: *Builder) !void {
     const omit_stage2 = b.option(bool, "omit-stage2", "Do not include stage2 behind a feature flag inside stage1") orelse false;
     const static_llvm = b.option(bool, "static-llvm", "Disable integration with system-installed LLVM, Clang, LLD, and libc++") orelse false;
     const enable_llvm = b.option(bool, "enable-llvm", "Build self-hosted compiler with LLVM backend enabled") orelse (is_stage1 or static_llvm);
+    const llvm_has_m68k = b.option(
+        bool,
+        "llvm-has-m68k",
+        "Whether LLVM has the experimental target m68k enabled",
+    ) orelse false;
+    const llvm_has_csky = b.option(
+        bool,
+        "llvm-has-csky",
+        "Whether LLVM has the experimental target csky enabled",
+    ) orelse false;
+    const llvm_has_ve = b.option(
+        bool,
+        "llvm-has-ve",
+        "Whether LLVM has the experimental target ve enabled",
+    ) orelse false;
+    const llvm_has_arc = b.option(
+        bool,
+        "llvm-has-arc",
+        "Whether LLVM has the experimental target arc enabled",
+    ) orelse false;
     const enable_macos_sdk = b.option(bool, "enable-macos-sdk", "Run tests requiring presence of macOS SDK and frameworks") orelse false;
     const config_h_path_option = b.option([]const u8, "config_h", "Path to the generated config.h");
 
@@ -115,6 +135,10 @@ pub fn build(b: *Builder) !void {
     exe_options.addOption(u32, "mem_leak_frames", mem_leak_frames);
     exe_options.addOption(bool, "skip_non_native", skip_non_native);
     exe_options.addOption(bool, "have_llvm", enable_llvm);
+    exe_options.addOption(bool, "llvm_has_m68k", llvm_has_m68k);
+    exe_options.addOption(bool, "llvm_has_csky", llvm_has_csky);
+    exe_options.addOption(bool, "llvm_has_ve", llvm_has_ve);
+    exe_options.addOption(bool, "llvm_has_arc", llvm_has_arc);
 
     if (enable_llvm) {
         const cmake_cfg = if (static_llvm) null else findAndParseConfigH(b, config_h_path_option);
@@ -261,6 +285,10 @@ pub fn build(b: *Builder) !void {
     test_stage2_options.addOption(bool, "is_stage1", is_stage1);
     test_stage2_options.addOption(bool, "omit_stage2", omit_stage2);
     test_stage2_options.addOption(bool, "have_llvm", enable_llvm);
+    test_stage2_options.addOption(bool, "llvm_has_m68k", llvm_has_m68k);
+    test_stage2_options.addOption(bool, "llvm_has_csky", llvm_has_csky);
+    test_stage2_options.addOption(bool, "llvm_has_ve", llvm_has_ve);
+    test_stage2_options.addOption(bool, "llvm_has_arc", llvm_has_arc);
     test_stage2_options.addOption(bool, "enable_qemu", is_qemu_enabled);
     test_stage2_options.addOption(bool, "enable_wine", is_wine_enabled);
     test_stage2_options.addOption(bool, "enable_wasmtime", is_wasmtime_enabled);