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[PATCH 049/236] asan.c: strengthen some rtx locals


This is an example of strengthening rtx.  For example, we
now have strong enough types provided by the existing scaffolding to
turn "insn" and "insns" in this:

  for (insn = insns; insn; insn = NEXT_INSN (insn))

from plain rtx into rtx_insn *.

gcc/
	* asan.c (asan_clear_shadow): Strengthen locals "insn", "insns"
	and "jump" from rtx to rtx_insn *.  Strengthen local "top_label"
	from rtx to rtx_code_label *.
---
 gcc/asan.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gcc/asan.c b/gcc/asan.c
index 11627c7..82e601d 100644
--- a/gcc/asan.c
+++ b/gcc/asan.c
@@ -905,7 +905,9 @@ asan_shadow_cst (unsigned char shadow_bytes[4])
 static void
 asan_clear_shadow (rtx shadow_mem, HOST_WIDE_INT len)
 {
-  rtx insn, insns, top_label, end, addr, tmp, jump;
+  rtx_insn *insn, *insns, *jump;
+  rtx_code_label *top_label;
+  rtx end, addr, tmp;
 
   start_sequence ();
   clear_storage (shadow_mem, GEN_INT (len), BLOCK_OP_NORMAL);
-- 
1.8.5.3


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