[llvm] ac889a5 - [gn build] Port f4abdb0c074b

[LLVM GN Syncbot via llvm-commits]

Author: LLVM GN Syncbot
Date: 2021-09-23T13:34:40Z
New Revision: ac889a5262f230eaccfbe60ad2c1d1ae60280623

URL: https://github.com/llvm/llvm-project/commit/ac889a5262f230eaccfbe60ad2c1d1ae60280623
DIFF: https://github.com/llvm/llvm-project/commit/ac889a5262f230eaccfbe60ad2c1d1ae60280623.diff

LOG: [gn build] Port f4abdb0c074b

Added: 
    

Modified: 
    llvm/utils/gn/secondary/libcxx/include/BUILD.gn

Removed: 
    


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diff  --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index e88922778a20a..413dd9cdc64a9 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -162,6 +162,7 @@ if (current_toolchain == default_toolchain) {
       "__compare/common_comparison_category.h",
       "__compare/compare_three_way_result.h",
       "__compare/ordering.h",
+      "__compare/synth_three_way.h",
       "__compare/three_way_comparable.h",
       "__concepts/arithmetic.h",
       "__concepts/assignable.h",