Index: head/lang/gcc10-devel/files/patch-pr240387
===================================================================
--- head/lang/gcc10-devel/files/patch-pr240387	(nonexistent)
+++ head/lang/gcc10-devel/files/patch-pr240387	(revision 512547)
@@ -0,0 +1,26 @@
+This fixes FreeBSD PR240387, a bootstrap failure with clang.
+
+2019-09-20  Richard Biener  <rguenther@suse.de>
+
+	PR target/91767
+	* config/i386/i386-features.c (general_scalar_chain::convert_registers):
+	Ensure there's a sequence point between allocating the new register
+	and passing a reference to a reg via regno_reg_rtx.
+
+--- UTC
+Index: gcc/config/i386/i386-features.c
+===================================================================
+--- gcc/config/i386/i386-features.c	(revision 275988)
++++ gcc/config/i386/i386-features.c	(revision 275989)
+@@ -1210,7 +1210,10 @@
+   bitmap_iterator bi;
+   unsigned id;
+   EXECUTE_IF_SET_IN_BITMAP (defs_conv, 0, id, bi)
+-    defs_map.put (regno_reg_rtx[id], gen_reg_rtx (smode));
++    {
++      rtx chain_reg = gen_reg_rtx (smode);
++      defs_map.put (regno_reg_rtx[id], chain_reg);
++    }
+   EXECUTE_IF_SET_IN_BITMAP (insns_conv, 0, id, bi)
+     for (df_ref ref = DF_INSN_UID_DEFS (id); ref; ref = DF_REF_NEXT_LOC (ref))
+       if (bitmap_bit_p (defs_conv, DF_REF_REGNO (ref)))

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