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m1/perf/sched.c: don't try to unblock references of next setter twice (more)

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Also changed:
- added commented-out #define DEBUG
- work-around for abort() being a no-op in libbase
This commit is contained in:
Werner Almesberger 2011-09-23 22:15:11 -03:00
parent 69cfc407d5
commit 0f80dcf118
1 changed files with 12 additions and 6 deletions
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18
m1/perf/sched.c
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@ -22,7 +22,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
//#include <assert.h>
#include <fpvm/is.h>
#include <fpvm/fpvm.h>
@ -31,10 +31,15 @@
#include <hw/pfpu.h>
#undef assert
#define assert(x) \
do { if (!(x)) { printf("ASSERT: " #x "\n"); abort(); } } \
while (0)
//#define REG_STATS
//#define LCPF /* longest critical path first */
//#define DEBUG
#ifdef DEBUG
#define Dprintf printf
#else
@ -447,13 +452,14 @@ static void unblock(struct insn *insn)
}
static void put_reg_by_setter(struct insn *setter, int vm_reg)
static void put_reg_by_ref(struct data_ref *ref, int vm_reg)
{
struct insn *setter = ref->dep;
struct vm_reg *reg;
if (setter) {
put_reg(setter->vm_insn->dest);
if (setter->next_setter)
if (setter->next_setter && setter->next_setter != ref->insn)
unblock(setter->next_setter);
} else {
reg = sc->regs+vm_reg2idx(vm_reg);
@ -483,15 +489,15 @@ static void issue(struct insn *insn, unsigned *code)
switch (insn->arity) {
case 3:
put_reg_by_setter(insn->cond.dep, FPVM_REG_IFB);
put_reg_by_ref(&insn->cond, FPVM_REG_IFB);
/* fall through */
case 2:
CODE(sc->cycle).opb = lookup_pfpu_reg(insn->vm_insn->opb);
put_reg_by_setter(insn->opb.dep, insn->vm_insn->opb);
put_reg_by_ref(&insn->opb, insn->vm_insn->opb);
/* fall through */
case 1:
CODE(sc->cycle).opa = lookup_pfpu_reg(insn->vm_insn->opa);
put_reg_by_setter(insn->opa.dep, insn->vm_insn->opa);
put_reg_by_ref(&insn->opa, insn->vm_insn->opa);
break;
case 0:
break;