intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 33 insertions, 0 deletions

diff --git a/build/plugins/llvm_bc.py b/build/plugins/llvm_bc.py
new file mode 100644
index 00000000000..2cfe43884cf
--- /dev/null
+++ b/build/plugins/llvm_bc.py
@@ -0,0 +1,33 @@
+import sys
+
+from _common import rootrel_arc_src, sort_by_keywords, skip_build_root, stripext
+
+
+def onllvm_bc(unit, *args):
+    free_args, kwds = sort_by_keywords({'SYMBOLS': -1, 'NAME': 1, 'NO_COMPILE': 0}, args)
+    name = kwds['NAME'][0]
+    symbols = kwds.get('SYMBOLS')
+    obj_suf = unit.get('OBJ_SUF')
+    skip_compile_step = 'NO_COMPILE' in kwds 
+    merged_bc = name + '_merged' + obj_suf + '.bc'
+    out_bc = name + '_optimized' + obj_suf + '.bc'
+    bcs = []
+    for x in free_args:
+        rel_path = rootrel_arc_src(x, unit)
+        bc_path = '${ARCADIA_BUILD_ROOT}/' + skip_build_root(rel_path) + obj_suf + '.bc'
+        if not skip_compile_step:
+            if x.endswith('.c'):
+                llvm_compile = unit.onllvm_compile_c
+            elif x.endswith('.ll'):
+                llvm_compile = unit.onllvm_compile_ll
+            else:
+                llvm_compile = unit.onllvm_compile_cxx
+            llvm_compile([rel_path, bc_path])
+        bcs.append(bc_path)
+    unit.onllvm_link([merged_bc] + bcs)
+    opt_opts = ['-O2', '-globalopt', '-globaldce']
+    if symbols:
+        # XXX: '#' used instead of ',' to overcome ymake tendency to split everything by comma
+        opt_opts += ['-internalize', '-internalize-public-api-list=' + '#'.join(symbols)]
+    unit.onllvm_opt([merged_bc, out_bc] + opt_opts)
+    unit.onresource([out_bc, '/llvm_bc/' + name])