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Added a command to kill a register

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This commit is contained in:
ceriel 1989-10-26 15:41:38 +00:00
parent adc8fc6e9e
commit 74546bd985
3 changed files with 5 additions and 1 deletions
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1
h/cgg_cg.h
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@ -37,6 +37,7 @@
#define DO_DLINE 21
#define DO_SETCC 22
#define DO_TOSTACK 23
#define DO_KILLREG 24
#ifndef MAXATT
#define MAXATT TOKENSIZE

3
mach/proto/ncg/codegen.c
View file

@ -482,12 +482,14 @@ normalfailed: if (stackpad!=tokpatlen) {
rp->r_contents.t_token=0;
break;
}
case DO_KILLREG:
case DO_RREMOVE: { /* register remove */
register i;
int nodeno;
token_p tp;
tkdef_p tdp;
result_t result;
int dokill = (codep[-1] & 037) == DO_KILLREG;
DEBUG("RREMOVE");
getint(nodeno,codep);
@ -495,6 +497,7 @@ normalfailed: if (stackpad!=tokpatlen) {
if (result.e_typ!=EV_REG)
break;
if ( in_stack(result.e_v.e_reg) ) BROKE() ; /* Check aside-stack */
if (dokill) machregs[result.e_v.e_reg].r_contents.t_token = 0;
for (tp= &fakestack[stackheight-tokpatlen-1];tp>=&fakestack[0];tp--)
if (tp->t_token==-1) {
if(tp->t_att[0].ar==result.e_v.e_reg)

2
util/ncgg/output.c
View file

@ -716,7 +716,7 @@ varinfo *kills,*allocates,*generates,*yields,*leaving;
code53(DO_REMOVE,0);
codeint(vp->vi_int[0]);
} else {
code8(DO_RREMOVE);
code8(DO_KILLREG);
codeint(-vp->vi_int[0] - 1);
}
codenl();