shithub: scc

Info  •  Files  •  Log  •  Branches

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;

 }