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-rw-r--r--compiler-rt/lib/builtins/arm/sync-ops.h7
1 files changed, 3 insertions, 4 deletions
diff --git a/compiler-rt/lib/builtins/arm/sync-ops.h b/compiler-rt/lib/builtins/arm/sync-ops.h
index 0c13394f2c5..777b121d3bc 100644
--- a/compiler-rt/lib/builtins/arm/sync-ops.h
+++ b/compiler-rt/lib/builtins/arm/sync-ops.h
@@ -7,10 +7,9 @@
*
*===----------------------------------------------------------------------===//
*
- * FIXME: description
- * This file implements the __udivsi3 (32-bit unsigned integer divide)
- * function for the ARM architecture. A naive digit-by-digit computation is
- * employed for simplicity.
+ * This file implements outline macros for the __sync_fetch_and_*
+ * operations. Different instantiations will generate appropriate assembly for
+ * ARM and Thumb-2 versions of the functions.
*
*===----------------------------------------------------------------------===*/
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