Make these regexes stricter by disallowing any additional characters in the output.
Thanks to dblaikie for pointing this out!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215166 91177308-0d34-0410-b5e6-96231b3b80d8
[stack protector] Look through bitcasts to get global variable
__stack_chk_guard.

Handle the case where the pointer operand of the load instruction that loads the
stack guard is not a global variable but instead a bitcast.

%StackGuard = load i8** bitcast (i64** @__stack_chk_guard to i8**)
call void @llvm.stackprotector(i8* %StackGuard, i8** %StackGuardSlot)

Original test case provided by Ana Pazos.

This fixes PR20558.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215167 91177308-0d34-0410-b5e6-96231b3b80d8
[AVX512] Add codegen test for the masking variant of valign

The AddedComplexity is needed just like in avx512_perm_3src.  There may be a
bug in the complexity computation...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215168 91177308-0d34-0410-b5e6-96231b3b80d8
Fix for multi-line comment warning


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215169 91177308-0d34-0410-b5e6-96231b3b80d8