. The ELIMINABLE_REGS macro is set accordingly,
however, the actual elimination happens only with optimization turned
on.
If there is an article describing register elimination vs
pseudo-registers, I would appreciate a link.
--
Best Regards,
Ivan Shcherbakov
t && ep->ref_outside_mem)
ep->can_eliminate = 0;
Is there a way to prevent prologue instructions (e.g. saving ARGP/FP
before elimination phase) from affecting elimination? Maybe,
expand_prologue() should behave differently depending on whether the
elimination h
be responsible for
eliminating argp?
--
Best regards,
Ivan Shcherbakov mailto:shcherba...@eit.uni-kl.de
TU Kaiserslautern, Germany
Department of Real-Time Systems
Hi, Ian,
For i386-gcc, this seems to happen during global register allocation
pass. This corresponds to IRA pass of gcc 4.4.x. I have attached the
corresponding RTL dump files.
--
Best regards,
Ivan Shcherbakov mailto:shcherba...@eit.uni-kl.de
TU Kaiserslautern
sh_operand" "=<")
(match_operand:HI 0 "general_operand" "rim"))]
""
[(set (match_dup 2) (match_dup 0))
(set (match_dup 1) (match_dup 2))]
"")
Do you know any working way of telling GCC to use temporary scratch
register when the normal push INSN cannot be used?
--
Best regards,
Ivan Shcherbakov mailto:shcherba...@eit.uni-kl.de
TU Kaiserslautern, Germany
Department of Real-Time Systems
