[gcc(refs/users/clyon/heads/mve-autovec)] gcc/genflags.c: Improve error message

[Christophe Lyon]

https://gcc.gnu.org/g:7a76f047ad772b37929683417dba08b262627c85

commit 7a76f047ad772b37929683417dba08b262627c85
Author: Christophe Lyon <christophe.lyon@linaro.org>
Date:   Fri Feb 26 16:34:56 2021 +0100

    gcc/genflags.c: Improve error message
    
    When an iterator cannot be expanded, it is helpful to see the expanded
    name which is causing problems.  It would be better to also print the
    current iterator value (which couldn't match), but I couldn't find
    how.
    
    2021-03-01  Christophe Lyon  <christophe.lyon@linaro.org>
    
            gcc/
            * genflags.c (gen_insn): Print failed expansion string.

Diff:
---
 gcc/genflags.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/genflags.c b/gcc/genflags.c
index f65b16a6555..a154b855441 100644
--- a/gcc/genflags.c
+++ b/gcc/genflags.c
@@ -152,7 +152,7 @@ gen_insn (md_rtx_info *info)
   lt = strchr (name, '<');
   if (lt && strchr (lt + 1, '>'))
     {
-      error_at (info->loc, "unresolved iterator");
+      error_at (info->loc, "unresolved iterator in %s", name);
       return;
     }
 
@@ -160,7 +160,7 @@ gen_insn (md_rtx_info *info)
   if (lt || gt)
     {
       error_at (info->loc, "unmatched angle brackets, likely "
-		"an error in iterator syntax");
+		"an error in iterator syntax in %s", name);
       return;
     }