diff options
Diffstat (limited to 'gcc/calls.c')
| -rw-r--r-- | gcc/calls.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/calls.c b/gcc/calls.c index 7538e4e5040..0cd8cc9dbcb 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -1591,6 +1591,10 @@ mem_overlaps_already_clobbered_arg_p (rtx addr, unsigned HOST_WIDE_INT size) && (XEXP (addr, 0) == crtl->args.internal_arg_pointer || XEXP (addr, 1) == crtl->args.internal_arg_pointer)) return true; + /* If the address comes in a register, we have no idea of its origin so + give up and conservatively return true. */ + else if (REG_P(addr)) + return true; else return false; @@ -1831,6 +1835,10 @@ check_sibcall_argument_overlap_1 (rtx x) code = GET_CODE (x); + /* We need not check the operands of the CALL expression itself. */ + if (code == CALL) + return 0; + if (code == MEM) return mem_overlaps_already_clobbered_arg_p (XEXP (x, 0), GET_MODE_SIZE (GET_MODE (x))); |