nvptx: Clarify 'nvptx_output_skip' case of no or incomplete initializer

I was getting confused about 'nvptx_output_skip' in certain cases not doing
anything at all; write down and 'assert' what I found.

	gcc/
	* config/nvptx/nvptx.cc (nvptx_output_skip): Clarify case of
	no or incomplete initializer.

diff --git a/gcc/config/nvptx/nvptx.cc b/gcc/config/nvptx/nvptx.cc
index 060f45318f452ca40d46a0fba1ed8c7918ce0a1d..6f3646192056a8f766f7ef51e7a860927e1b1f27 100644 (file)
--- a/gcc/config/nvptx/nvptx.cc
+++ b/gcc/config/nvptx/nvptx.cc
@@ -2391,6 +2391,12 @@ nvptx_output_skip (FILE *, unsigned HOST_WIDE_INT size)
       if (size)
        nvptx_assemble_value (0, size);
     }
+  else
+    /* Otherwise, we don't have to do anything: this skip terminates the
+       initializer; we skip either the full ('!init_frag.started' case) or the
+       remainder ('init_frag.started' case) of the initializer (that is, either
+       no or incomplete initializer).  */
+    gcc_checking_assert (size == init_frag.remaining * init_frag.size);
 }
 
 /* Output a string STR with length SIZE.  As in nvptx_output_skip we