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| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-12-08 18:19:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-07 21:05:41 -0700 |
| commit | a01ebd7c81e95f461736cf00f94fecabdcacac38 (patch) | |
| tree | 7745940f4a8a58cc04e1f89bddbd9b0a251da74a /example.c | |
| parent | 962279e898a2701f3f3b8acce30d2649055b55e3 (diff) | |
| download | sparse-dev-a01ebd7c81e95f461736cf00f94fecabdcacac38.tar.gz | |
If we don't have any pre-defined incoming storage, select
something. If we can try to go for a register, all the better.
Diffstat (limited to 'example.c')
| -rw-r--r-- | example.c | 13 |
1 files changed, 12 insertions, 1 deletions
@@ -15,7 +15,8 @@ struct hardreg { const char *name; pseudo_t contains; unsigned busy:1, - dirty:1; + dirty:1, + used:1; }; static void output_bb(struct basic_block *bb, unsigned long generation); @@ -97,6 +98,7 @@ static void flush_reg(struct bb_state *state, struct hardreg *hardreg) return; hardreg->busy = 0; hardreg->dirty = 0; + hardreg->used = 1; pseudo = hardreg->contains; if (!pseudo) return; @@ -159,6 +161,14 @@ static struct hardreg *fill_reg(struct bb_state *state, struct hardreg *hardreg, break; } } + if (src->storage->type == REG_UDEF) { + if (!hardreg->used) { + src->storage->type = REG_REG; + src->storage->regno = hardreg - hardregs; + break; + } + alloc_stack(state, src->storage); + } printf("\tmov.%d %s,%s\n", 32, show_memop(src->storage), hardreg->name); break; default: @@ -516,6 +526,7 @@ static void generate(struct basic_block *bb, struct bb_state *state) hardregs[i].contains = NULL; hardregs[i].busy = 0; hardregs[i].dirty = 0; + hardregs[i].used = 0; } FOR_EACH_PTR(state->inputs, entry) { |