ref: 8a564b2ea4084f554f6ac18034c8fe7fce65966e
parent: 3b779b98d1cbcf4e2803970c72927306f5e02603
author: Roberto E. Vargas Caballero <k0ga@shike2.com>
date: Wed Nov 3 04:40:36 EDT 2021
cc2/qbe: Add support for register parameters
--- a/src/cmd/cc/cc1/decl.c
+++ b/src/cmd/cc/cc1/decl.c
@@ -486,6 +486,7 @@
switch (yytoken) { case '{':case TYPE:
+ case SCLASS:
case TYPEIDEN:
if (curctx != PARAMCTX)
errorp("nested function declaration");--- a/src/cmd/cc/cc2/target/qbe/cgen.c
+++ b/src/cmd/cc/cc2/target/qbe/cgen.c
@@ -318,6 +318,7 @@
lhs(Node *np, Node *new)
{ switch (np->op) {+ case OREG:
case OMEM:
case OAUTO:
*new = *np;
@@ -477,6 +478,7 @@
*ret = *np;
return np;
case OMEM:
+ case OREG:
case OAUTO:
return load(tp, np, ret);
case ONEG:
--- a/src/cmd/cc/cc2/target/qbe/code.c
+++ b/src/cmd/cc/cc2/target/qbe/code.c
@@ -294,6 +294,8 @@
void
defpar(Symbol *sym)
{+ if (sym->kind == SREG)
+ sym->kind = SAUTO;
sym->type.flags |= PARF;
}