1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/except.c b/gcc/except.c
index 867b4a5bdf6..d07d6bf0d40 100644
--- a/gcc/except.c
+++ b/gcc/except.c
@@ -2094,6 +2094,14 @@ emit_eh_context ()
 	    end_sequence ();
 
 	    emit_insns_before (insns, insn);
+
+            /* At -O0, we must make the context register stay alive so
+               that the stupid.c register allocator doesn't get confused. */
+            if (obey_regdecls != 0)
+              {
+                insns = gen_rtx_USE (GET_MODE (XEXP (reg,0)), XEXP (reg,0));
+                emit_insn_before (insns, get_last_insn ());
+              }
 	  }
       }
 }