ref: 73db3c729687684d80a30f3edab1eecc55b8ae5f
parent: 915befc8a258da8337f7329437fe819d5ce18a22
author: Roberto E. Vargas Caballero <[email protected]>
date: Fri Apr 22 10:59:35 EDT 2016
[cc2-qbe] Add different versions of load operations Load depend of the type that is going to be loaded from memory, so we need a different opcode for the different sizes.
--- a/cc2/arch/qbe/arch.h
+++ b/cc2/arch/qbe/arch.h
@@ -5,7 +5,6 @@
#define TSIZE unsigned long
enum asmop {- ASLOAD,
ASSTB,
ASSTH,
ASSTW,
@@ -12,6 +11,13 @@
ASSTL,
ASSTS,
ASSTD,
+
+ ASLDB,
+ ASLDH,
+ ASLDW,
+ ASLDL,
+ ASLDS,
+ ASLDD,
ASADDW,
ASSUBW,
--- a/cc2/arch/qbe/cgen.c
+++ b/cc2/arch/qbe/cgen.c
@@ -107,11 +107,30 @@
load(Node *np)
{Node *new;
+ int op;
+ Type *tp = &np->type;
new = tmpnode(newnode());
new->left = np;
- new->type = np->type;
- code(ASLOAD, new, np, NULL);
+ new->type = *tp;
+
+ switch (tp->size) {+ case 1:
+ op = ASLDB;
+ break;
+ case 2:
+ op = ASLDH;
+ break;
+ case 4:
+ op = (tp->flags & INTF) ? ASLDW : ASLDS;
+ break;
+ case 8:
+ op = (tp->flags & INTF) ? ASLDL : ASLDD;
+ break;
+ default:
+ abort();
+ }
+ code(op, new, np, NULL);
return new;
}
--- a/cc2/arch/qbe/code.c
+++ b/cc2/arch/qbe/code.c
@@ -16,7 +16,13 @@
char *txt;
char letter;
} optbl [] = {- [ASLOAD] = {.fun = load, .txt = "load", .letter = 'w'},+ [ASLDB] = {.fun = load, .txt = "load", .letter = 'b'},+ [ASLDH] = {.fun = load, .txt = "load", .letter = 'h'},+ [ASLDW] = {.fun = load, .txt = "load", .letter = 'w'},+ [ASLDL] = {.fun = load, .txt = "load", .letter = 'l'},+ [ASLDS] = {.fun = load, .txt = "load", .letter = 's'},+ [ASLDD] = {.fun = load, .txt = "load", .letter = 'd'},+
[ASSTB] = {.fun = store, .txt = "store", .letter = 'b'}, [ASSTH] = {.fun = store, .txt = "store", .letter = 'h'}, [ASSTW] = {.fun = store, .txt = "store", .letter = 'w'},@@ -346,8 +352,12 @@
static void
load(void)
{- printf("\t%s %c=\t", addr2txt(&pc->to), 'w');- printf("%s\t%s\n", optbl[pc->op].txt, addr2txt(&pc->from1));+ struct opdata *p = &optbl[pc->op];
+ char to[ADDR_LEN], from[ADDR_LEN];
+
+ strcpy(to, addr2txt(&pc->to));
+ strcpy(from, addr2txt(&pc->from1));
+ printf("\t%s %c=\t%s\t%s\n", to, p->letter, p->txt, from);}
void