[hackers] [scc] [cc2-qbe] Convert register variables into automatic variables || Roberto E. Vargas Caballero

[git]

commit 88ae3bed3e7c06774ab9a9a98db4a71534fea594
Author:     Roberto E. Vargas Caballero <k...@shike2.com>
AuthorDate: Fri Jun 3 12:53:51 2016 +0200
Commit:     Roberto E. Vargas Caballero <k...@shike2.com>
CommitDate: Fri Jun 3 12:53:51 2016 +0200

    [cc2-qbe] Convert register variables into automatic variables
    
    Qbe ignores register variables, and this change makes easier
    for qbe backend to handle automatic and register variables.

diff --git a/cc2/arch/qbe/code.c b/cc2/arch/qbe/code.c
index 4d3660d..c637ced 100644
--- a/cc2/arch/qbe/code.c
+++ b/cc2/arch/qbe/code.c
@@ -282,6 +282,8 @@ defpar(Symbol *sym)
 void
 defvar(Symbol *sym)
 {
+       if (sym->kind == SREG)
+               sym->kind = SAUTO;
 }
 
 void