Auto merge of #52724 - alexcrichton:update-compiler-builtins, r=alexcrichton

bors · bors · commit 3d0e93309d61 · 2018-07-27T03:24:16.000Z
Update the compiler-builtins submodule Pull in a fix for rust-lang/libm#129
diff --git a/src/libcompiler_builtins b/src/libcompiler_builtins
@@ -1 +1 @@
-Subproject commit b4a3645cfe102a100b6ebecbe76df37bc957eda8
+Subproject commit 52a6a4d7087d14a35d44a11c39c77fa79d71378d
