diff options
| author | Hariharan Sandanagobalane <hariharan@picochip.com> | 2011-05-12 11:12:12 +0000 |
|---|---|---|
| committer | Hariharan Sandanagobalane <hariharans@gcc.gnu.org> | 2011-05-12 11:12:12 +0000 |
| commit | b27981e06b8ae5972ea24ca63e9d07f5453aa234 (patch) | |
| tree | 9773afe85f51a652a50d966f4cacc84c1cc2311f /gcc/ira.c | |
| parent | f3b143f080d17738cb9888a6d3880f1fb26bf8d7 (diff) | |
| download | gcc-b27981e06b8ae5972ea24ca63e9d07f5453aa234.zip gcc-b27981e06b8ae5972ea24ca63e9d07f5453aa234.tar.gz gcc-b27981e06b8ae5972ea24ca63e9d07f5453aa234.tar.bz2 | |
ira.c (clarify_prohibited_class_mode_regs): Prevent the function from accessing beyond the end of REGNO_REG_CLASS array by...
* ira.c (clarify_prohibited_class_mode_regs): Prevent the function from
accessing beyond the end of REGNO_REG_CLASS array by stopping the
loop early.
From-SVN: r173699
Diffstat (limited to 'gcc/ira.c')
| -rw-r--r-- | gcc/ira.c | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -1422,6 +1422,12 @@ clarify_prohibited_class_mode_regs (void) if (TEST_HARD_REG_BIT (ira_prohibited_class_mode_regs[cl][j], hard_regno)) continue; nregs = hard_regno_nregs[hard_regno][j]; + if (hard_regno + nregs > FIRST_PSEUDO_REGISTER) + { + SET_HARD_REG_BIT (ira_prohibited_class_mode_regs[cl][j], + hard_regno); + continue; + } pclass = ira_pressure_class_translate[REGNO_REG_CLASS (hard_regno)]; for (nregs-- ;nregs >= 0; nregs--) if (((enum reg_class) pclass |