From 256e910dee90bda81286f31081b56a707f267e0d Mon Sep 17 00:00:00 2001
From: Marcel Hollerbach <mail@marcel-hollerbach.de>
Date: Thu, 7 May 2020 13:37:11 +0200
Subject: [PATCH] cache up regex mathings

the names passed in here are often the same. We should ensure that we
cache the regex match, as this will speed up our runtime a lot.
---
 mesonbuild/compilers/compilers.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/mesonbuild/compilers/compilers.py b/mesonbuild/compilers/compilers.py
index b0fa5f5b8..ce1016d15 100644
--- a/mesonbuild/compilers/compilers.py
+++ b/mesonbuild/compilers/compilers.py
@@ -138,11 +138,15 @@ def is_llvm_ir(fname):
         fname = fname.fname
     return fname.split('.')[-1] == 'll'
 
+@lru_cache(maxsize=None)
+def cached_by_name(fname):
+    suffix = fname.split('.')[-1]
+    return suffix in obj_suffixes
+
 def is_object(fname):
     if hasattr(fname, 'fname'):
         fname = fname.fname
-    suffix = fname.split('.')[-1]
-    return suffix in obj_suffixes
+    return cached_by_name(fname)
 
 def is_library(fname):
     if hasattr(fname, 'fname'):