This makes recorded reg base values private to alias.cc, its computation
should go away but find_base_term can be used to cross-check that
we don't regress when only having MEM_BASE eventually.
Selective scheduling wouldn't need to avoid renaming regs with a base
value anymore, so this removes this only outside use.
* alias.cc (get_reg_base_value): Make static.
* rtl.h (get_reg_base_value): Remove.
* sel-sched.cc (init_regs_for_mode): Do not worry about
REG_BASE_VALUE when recording regs for renaming.
---
gcc/alias.cc | 2 +-
gcc/rtl.h | 1 -
gcc/sel-sched.cc | 4 ++++
3 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/gcc/alias.cc b/gcc/alias.cc
index 48633aff699..541994c5047 100644
--- a/gcc/alias.cc
+++ b/gcc/alias.cc
@@ -1656,7 +1656,7 @@ record_set (rtx dest, const_rtx set, void *data
ATTRIBUTE_UNUSED)
/* Return REG_BASE_VALUE for REGNO. Selective scheduler uses this to avoid
using hard registers with non-null REG_BASE_VALUE for renaming. */
-rtx
+static rtx
get_reg_base_value (unsigned int regno)
{
return (*reg_base_value)[regno];
diff --git a/gcc/rtl.h b/gcc/rtl.h
index c84334cb945..3fcaaec49e4 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -4496,7 +4496,6 @@ extern bool may_be_sp_based_p (rtx);
extern rtx gen_hard_reg_clobber (machine_mode, unsigned int);
extern rtx get_reg_known_value (unsigned int);
extern bool get_reg_known_equiv_p (unsigned int);
-extern rtx get_reg_base_value (unsigned int);
extern rtx extract_mem_from_operand (rtx);
#ifdef STACK_REGS
diff --git a/gcc/sel-sched.cc b/gcc/sel-sched.cc
index 17b71127960..77ba100023d 100644
--- a/gcc/sel-sched.cc
+++ b/gcc/sel-sched.cc
@@ -1082,9 +1082,13 @@ init_regs_for_mode (machine_mode mode)
/* Can't use regs which aren't saved by
the prologue. */
|| !TEST_HARD_REG_BIT (sel_hrd.regs_ever_used, cur_reg + i)
+ /* It's fine to elide this since REG_BASE_VALUE will go away
+ and the info is in the MEMs itself. */
+#if 0
/* Can't use regs with non-null REG_BASE_VALUE, because adjusting
it affects aliasing globally and invalidates all AV sets. */
|| get_reg_base_value (cur_reg + i)
+#endif
#ifdef LEAF_REGISTERS
/* We can't use a non-leaf register if we're in a
leaf function. */
--
2.35.3
