[roll] Roll llvm-project/libc 4c3dd0e..60ef3ea (4 commits)

60ef3ea Revert "[libc][NFC] adjust time related implementations" (#91657)
f8dd8c7 [libc][NFC] adjust time related implementations (#91485)
9d0202c [libc] Use __builtin_fma(f) by default if LIBC_TARGET_CPU_HAS_FMA is defined. (#91535)
f707a1c [libc] Add template deduction guide for cpp::lock_guard. (#91589)

GitOrigin-RevId: 34f92873e14feb98a7fd7dbc06ee4b6733dc8891
Change-Id: Ib978c8dd293fe8b656ade4135387056876692817
diff --git a/third_party/flower b/third_party/flower
index 787f165..0b20836 100644
--- a/third_party/flower
+++ b/third_party/flower
@@ -360,7 +360,7 @@
              gitsubmoduleof="fuchsia"
              path="third_party/llvm-libc/src"
              remote="https://llvm.googlesource.com/llvm-project/libc"
-             revision="4c3dd0ec47639cf4f73fb471573603880b9aaffc"/>
+             revision="60ef3ea520cf5fb92099123df8289db4cb25f5fa"/>
     <project name="third_party/lz4"
              gitsubmoduleof="fuchsia"
              path="third_party/lz4"