diff options
| author | Linus Torvalds <torvalds@evo.osdl.org> | 2004-12-11 21:26:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-07 21:06:02 -0700 |
| commit | 7ec6f5462f09df41d61a986b80cf7a6cfb174464 (patch) | |
| tree | 133f5a2d2edc41641497c5c911f949afe2791fcb /example.c | |
| parent | 10a301a2d01b93423e1699e2131707464d2e5448 (diff) | |
| download | sparse-dev-7ec6f5462f09df41d61a986b80cf7a6cfb174464.tar.gz | |
Do some kind of signed cast too.
Diffstat (limited to 'example.c')
| -rw-r--r-- | example.c | 13 |
1 files changed, 8 insertions, 5 deletions
@@ -741,7 +741,6 @@ static void generate_cast(struct bb_state *state, struct instruction *insn) struct hardreg *dst; unsigned int old = insn->orig_type ? insn->orig_type->bit_size : 0; unsigned int new = insn->size; - unsigned long long mask; /* * Cast to smaller type? Ignore the high bits, we @@ -754,10 +753,14 @@ static void generate_cast(struct bb_state *state, struct instruction *insn) dst = target_copy_reg(state, src, insn->target); - mask = ~(~0ULL << old); - mask &= ~(~0ULL << new); - - output_insn(state, "andl.%d $%#llx,%s", insn->size, mask, dst->name); + if (insn->orig_type && (insn->orig_type->ctype.modifiers & MOD_SIGNED)) { + output_insn(state, "sext.%d.%d %s", old, new, dst->name); + } else { + unsigned long long mask; + mask = ~(~0ULL << old); + mask &= ~(~0ULL << new); + output_insn(state, "andl.%d $%#llx,%s", insn->size, mask, dst->name); + } add_pseudo_reg(state, insn->target, dst); } |