diff options
Diffstat (limited to 'gcc/regrename.c')
| -rw-r--r-- | gcc/regrename.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/regrename.c b/gcc/regrename.c index 0cfe552..91e9d71 100644 --- a/gcc/regrename.c +++ b/gcc/regrename.c @@ -1225,6 +1225,10 @@ copy_value (rtx dest, rtx src, struct value_data *vd) if (frame_pointer_needed && dr == HARD_FRAME_POINTER_REGNUM) return; + /* Likewise for fixed or global registers. */ + if (fixed_regs[dr] || global_regs[dr]) + return; + /* If SRC and DEST overlap, don't record anything. */ dn = hard_regno_nregs[dr][GET_MODE (dest)]; sn = hard_regno_nregs[sr][GET_MODE (dest)]; |