[llvm] c47fb2d - [gn build] Guard the BLAKE3 assembly sources with platform (#70110)

[via llvm-commits]

Author: Gowtham Tammana
Date: 2026-03-06T20:53:05+05:30
New Revision: c47fb2d2b70841d00c5990582355632d6607bf51

URL: https://github.com/llvm/llvm-project/commit/c47fb2d2b70841d00c5990582355632d6607bf51
DIFF: https://github.com/llvm/llvm-project/commit/c47fb2d2b70841d00c5990582355632d6607bf51.diff

LOG: [gn build] Guard the BLAKE3 assembly sources with platform (#70110)

The source_set target defined for `llvm/lib/Support/BLAKE3` has assembly
files that are specific to x64 platform. Adding the relevant conditional
for this target.

Signed-off-by: Gowtham Tammana <g.tammana at samsung.com>

Added: 
    

Modified: 
    llvm/utils/gn/secondary/llvm/lib/Support/BLAKE3/BUILD.gn

Removed: 
    


################################################################################
diff  --git a/llvm/utils/gn/secondary/llvm/lib/Support/BLAKE3/BUILD.gn b/llvm/utils/gn/secondary/llvm/lib/Support/BLAKE3/BUILD.gn
index e980be728ed4e..18f382ea3086c 100644
--- a/llvm/utils/gn/secondary/llvm/lib/Support/BLAKE3/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/lib/Support/BLAKE3/BUILD.gn
@@ -15,16 +15,23 @@ static_library("BLAKE3") {
   ]
 }
 
-source_set("hack") {
-  sources = [
-    "blake3_avx2_x86-64_unix.S",
-    "blake3_avx2_x86-64_windows_gnu.S",
-    "blake3_avx512_x86-64_unix.S",
-    "blake3_avx512_x86-64_windows_gnu.S",
-    "blake3_neon.c",
-    "blake3_sse2_x86-64_unix.S",
-    "blake3_sse2_x86-64_windows_gnu.S",
-    "blake3_sse41_x86-64_unix.S",
-    "blake3_sse41_x86-64_windows_gnu.S",
-  ]
+if (current_cpu == "x64") {
+  source_set("hack") {
+    sources = [ "blake3_neon.c " ]
+    if (current_os == "linux") {
+      sources += [
+        "blake3_avx2_x86-64_unix.S",
+        "blake3_avx512_x86-64_unix.S",
+        "blake3_sse2_x86-64_unix.S",
+        "blake3_sse41_x86-64_unix.S",
+      ]
+    } else if (current_os == "win") {
+      sources += [
+        "blake3_avx2_x86-64_windows_gnu.S",
+        "blake3_avx512_x86-64_windows_gnu.S",
+        "blake3_sse2_x86-64_windows_gnu.S",
+        "blake3_sse41_x86-64_windows_gnu.S",
+      ]
+    }
+  }
 }