[SVE][IR] Scalable Vector IR Type with pr42210 fix

Recommit of D32530 with a few small changes:
  - Stopped recursively walking through aggregates in
    the verifier, so that we don't impose too much
    overhead on large modules under LTO (see PR42210).
  - Changed tests to match; the errors are slightly
    different since they only report the array or
    struct that actually contains a scalable vector,
    rather than all aggregates which contain one in
    a nested member.
  - Corrected an older comment

Reviewers: thakis, rengolin, sdesmalen

Reviewed By: sdesmalen

Differential Revision: https://reviews.llvm.org/D63321

llvm-svn: 363658

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/lib/AsmParser/LLToken.h b/llvm/lib/AsmParser/LLToken.h
index a1e70932178..6256c14b9d6 100644
--- a/llvm/lib/AsmParser/LLToken.h
+++ b/llvm/lib/AsmParser/LLToken.h
@@ -37,6 +37,7 @@ enum Kind {
   bar,     // |
   colon,   // :
 
+  kw_vscale,
   kw_x,
   kw_true,
   kw_false,