On Fri, Apr 16, 2021 at 12:01 PM Richard Sandiford via Gcc-patches
wrote:
>
> This patch is a GCC 11 regression caused by the rtl-ssa code.
> Normally we treat calls as containing a potential set of a global
> register, but DF makes a sensible exception for the stack pointer:
>
> if (i == ST
On Fri, Apr 16, 2021 at 10:17:10AM +0100, Richard Sandiford via Gcc-patches
wrote:
> gcc/
> PR rtl-optimization/99596
> * rtlanal.c (rtx_properties::try_to_add_insn): Don't add global
> register accesses for const calls. Assume that pure functions
> can only read from glob
This patch is a GCC 11 regression caused by the rtl-ssa code.
Normally we treat calls as containing a potential set of a global
register, but DF makes a sensible exception for the stack pointer:
if (i == STACK_POINTER_REGNUM)
/* The stack ptr is used (honorarily) by a CALL insn. */
