gwj / at91sam9263 · Commits

Commit 537730b956572a9e32adfa2e18164e8234594c08

Authored by bellard
1 parent edf779ff

zero offset optimisation 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@635 c046a42c-6fe2-441c-8c8c-71466251a162
Inline Side-by-side
Showing 1 changed file with 4 additions and 2 deletions
target-arm/translate.c
  View file @537730b
... ... @@ -279,7 +279,8 @@ static inline void gen_add_data_offset(DisasContext *s, unsigned int insn)
279 279 val = insn & 0xfff;
280 280 if (!(insn & (1 << 23)))
281 281 val = -val;
282   - gen_op_addl_T1_im(val);
  282 + if (val != 0)
  283 + gen_op_addl_T1_im(val);
283 284 } else {
284 285 /* shift/register */
285 286 rm = (insn) & 0xf;
... ... @@ -304,7 +305,8 @@ static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn)
304 305 val = (insn & 0xf) | ((insn >> 4) & 0xf0);
305 306 if (!(insn & (1 << 23)))
306 307 val = -val;
307   - gen_op_addl_T1_im(val);
  308 + if (val != 0)
  309 + gen_op_addl_T1_im(val);
308 310 } else {
309 311 /* register */
310 312 rm = (insn) & 0xf;
... ...