diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 33512ec4635..c570ea628ee 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -2896,7 +2896,14 @@ try_combine (rtx i3, rtx i2, rtx i1, int *new_direct_jump_p) && ! reg_referenced_p (SET_DEST (XVECEXP (newpat, 0, 0)), XVECEXP (newpat, 0, 1)) && ! (contains_muldiv (SET_SRC (XVECEXP (newpat, 0, 0))) - && contains_muldiv (SET_SRC (XVECEXP (newpat, 0, 1))))) + && contains_muldiv (SET_SRC (XVECEXP (newpat, 0, 1)))) +#ifdef HAVE_cc0 + /* We cannot split the parallel into two sets if both sets + reference cc0. */ + && ! (reg_referenced_p (cc0_rtx, XVECEXP (newpat, 0, 0)) + && reg_referenced_p (cc0_rtx, XVECEXP (newpat, 0, 1))) +#endif + ) { /* Normally, it doesn't matter which of the two is done first, but it does if one references cc0. In that case, it has to |
