diff options
Diffstat (limited to 'gcc/rtlanal.c')
| -rw-r--r-- | gcc/rtlanal.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index a19bdfd..a101a29 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -3481,7 +3481,9 @@ simplify_subreg_regno (unsigned int xregno, enum machine_mode xmode, /* Give the backend a chance to disallow the mode change. */ if (GET_MODE_CLASS (xmode) != MODE_COMPLEX_INT && GET_MODE_CLASS (xmode) != MODE_COMPLEX_FLOAT - && REG_CANNOT_CHANGE_MODE_P (xregno, xmode, ymode)) + && REG_CANNOT_CHANGE_MODE_P (xregno, xmode, ymode) + /* We can use mode change in LRA for some transformations. */ + && ! lra_in_progress) return -1; #endif @@ -3491,10 +3493,16 @@ simplify_subreg_regno (unsigned int xregno, enum machine_mode xmode, return -1; if (FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM - && xregno == ARG_POINTER_REGNUM) + /* We should convert arg register in LRA after the elimination + if it is possible. */ + && xregno == ARG_POINTER_REGNUM + && ! lra_in_progress) return -1; - if (xregno == STACK_POINTER_REGNUM) + if (xregno == STACK_POINTER_REGNUM + /* We should convert hard stack register in LRA if it is + possible. */ + && ! lra_in_progress) return -1; /* Try to get the register offset. */ |