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-rw-r--r--llvm/utils/gn/secondary/llvm/utils/TableGen/tablegen.gni2
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/utils/gn/secondary/llvm/utils/TableGen/tablegen.gni b/llvm/utils/gn/secondary/llvm/utils/TableGen/tablegen.gni
index cb588abbaa6..91863c02c22 100644
--- a/llvm/utils/gn/secondary/llvm/utils/TableGen/tablegen.gni
+++ b/llvm/utils/gn/secondary/llvm/utils/TableGen/tablegen.gni
@@ -66,6 +66,8 @@ template("tablegen") {
args = [
rebase_path(tblgen_executable, root_build_dir),
+ "--write-if-changed",
+
"-I",
rebase_path("//llvm/include", root_build_dir),
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