+++ /dev/null
-From 75892d97979f397a66730b97e8279941169e0316 Mon Sep 17 00:00:00 2001
-From: YunQiang Su <syq@gcc.gnu.org>
-Date: Fri, 23 Aug 2024 23:46:16 +0800
-Subject: MIPS: Include missing mips16.S in libgcc/lib1funcs.S
-
-mips16.S was missing since
-commit 29b74545531f6afbee9fc38c267524326dbfbedf
-Date: Thu Jun 1 10:14:24 2023 +0800
-
- MIPS: Add speculation_barrier support
-
-Without mips16.S included, some symbols will miss for mips16, and
-so some software will fail to build.
-
-libgcc/ChangeLog:
-
- * config/mips/lib1funcs.S: Includes mips16.S.
-
-(cherry picked from commit 9522fc8bb7812f2ad50eb038e0938bfd958e730f)
----
- libgcc/config/mips/lib1funcs.S | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
---- a/libgcc/config/mips/lib1funcs.S
-+++ b/libgcc/config/mips/lib1funcs.S
-@@ -19,7 +19,7 @@ a copy of the GCC Runtime Library Except
- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
- <http://www.gnu.org/licenses/>. */
-
--//#include "mips16.S"
-+#include "mips16.S"
-
- #ifdef L_speculation_barrier
-
+++ /dev/null
-From 840e53f15468b1e808386c6190d7f59227b85495 Mon Sep 17 00:00:00 2001
-Message-ID: <840e53f15468b1e808386c6190d7f59227b85495.1747165068.git.mschiffer@universe-factory.net>
-From: Denis Chertykov <chertykov@gmail.com>
-Date: Thu, 17 Oct 2024 11:12:38 +0400
-Subject: [PATCH] Reuse scratch registers generated by LRA
-
-Test file: udivmoddi.c
-problem insn: 484
-
-Before LRA pass we have:
-(insn 484 483 485 72 (parallel [
- (set (reg/v:SI 143 [ __q1 ])
- (plus:SI (reg/v:SI 143 [ __q1 ])
- (const_int -2 [0xfffffffffffffffe])))
- (clobber (scratch:QI))
- ]) "udivmoddi.c":163:405 discrim 5 186 {addsi3}
- (nil))
-
-LRA substitute all scratches with new pseudos, so we have:
-(insn 484 483 485 72 (parallel [
- (set (reg/v:SI 143 [ __q1 ])
- (plus:SI (reg/v:SI 143 [ __q1 ])
- (const_int -2 [0xfffffffffffffffe])))
- (clobber (reg:QI 619))
- ]) "/mnt/d/avr-lra/udivmoddi.c":163:405 discrim 5 186 {addsi3}
- (expr_list:REG_UNUSED (reg:QI 619)
- (nil)))
-
-Pseudo 619 is a special scratch register generated by LRA which is marked in `scratch_bitmap' and can be tested by call `ira_former_scratch_p(regno)'.
-
-In dump file (udivmoddi.c.317r.reload) we have:
- Creating newreg=619
-Removing SCRATCH to p619 in insn #484 (nop 3)
-rescanning insn with uid = 484.
-
-After that LRA tries to spill (reg:QI 619)
-It's a bug because (reg:QI 619) is an output scratch register which is already something like spill register.
-
-Fragment from udivmoddi.c.317r.reload:
- Choosing alt 2 in insn 484: (0) r (1) 0 (2) nYnn (3) &d {addsi3}
- Creating newreg=728 from oldreg=619, assigning class LD_REGS to r728
-
-IMHO: the bug is in lra-constraints.cc in function `get_reload_reg'
-fragment of `get_reload_reg':
- if (type == OP_OUT)
- {
- /* Output reload registers tend to start out with a conservative
- choice of register class. Usually this is ALL_REGS, although
- a target might narrow it (for performance reasons) through
- targetm.preferred_reload_class. It's therefore quite common
- for a reload instruction to require a more restrictive class
- than the class that was originally assigned to the reload register.
-
- In these situations, it's more efficient to refine the choice
- of register class rather than create a second reload register.
- This also helps to avoid cycling for registers that are only
- used by reload instructions. */
- if (REG_P (original)
- && (int) REGNO (original) >= new_regno_start
- && INSN_UID (curr_insn) >= new_insn_uid_start
-__________________________________^^
- && in_class_p (original, rclass, &new_class, true))
- {
- unsigned int regno = REGNO (original);
- if (lra_dump_file != NULL)
- {
- fprintf (lra_dump_file, " Reuse r%d for output ", regno);
- dump_value_slim (lra_dump_file, original, 1);
- }
-
-This condition incorrectly limits register reuse to ONLY newly generated instructions.
-i.e. LRA can reuse registers only from insns generated by himself.
-
-IMHO:It's wrong.
-Scratch registers generated by LRA also have to be reused.
-
-The patch is very simple.
-On x86_64, it bootstraps+regtests fine.
-
-gcc/
- PR target/116550
- PR target/119340
- * lra-constraints.cc (get_reload_reg): Reuse scratch registers
- generated by LRA.
-
-(cherry picked from commit e7393cbb5f2cae50b42713e71984064073aa378a)
----
- gcc/lra-constraints.cc | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
-
-diff --git a/gcc/lra-constraints.cc b/gcc/lra-constraints.cc
-index 10e3d4e4097..d44c73e59c8 100644
---- a/gcc/lra-constraints.cc
-+++ b/gcc/lra-constraints.cc
-@@ -676,7 +676,8 @@ get_reload_reg (enum op_type type, machine_mode mode, rtx original,
- used by reload instructions. */
- if (REG_P (original)
- && (int) REGNO (original) >= new_regno_start
-- && INSN_UID (curr_insn) >= new_insn_uid_start
-+ && (INSN_UID (curr_insn) >= new_insn_uid_start
-+ || ira_former_scratch_p (REGNO (original)))
- && in_class_p (original, rclass, &new_class, true))
- {
- unsigned int regno = REGNO (original);
---
-2.49.0
-
--- a/libatomic/Makefile.am
+++ b/libatomic/Makefile.am
-@@ -130,7 +130,6 @@ libatomic_la_LIBADD = $(foreach s,$(SIZES),$(addsuffix _$(s)_.lo,$(SIZEOBJS)))
+@@ -130,7 +130,6 @@ libatomic_la_LIBADD = $(foreach s,$(SIZE
## On a target-specific basis, include alternates to be selected by IFUNC.
if HAVE_IFUNC
if ARCH_AARCH64_LINUX
endif
--- a/libatomic/Makefile.in
+++ b/libatomic/Makefile.in
-@@ -452,7 +452,6 @@ M_SRC = $(firstword $(filter %/$(M_FILE), $(all_c_files)))
+@@ -452,7 +452,6 @@ M_SRC = $(firstword $(filter %/$(M_FILE)
libatomic_la_LIBADD = $(foreach s,$(SIZES),$(addsuffix \
_$(s)_.lo,$(SIZEOBJS))) $(am__append_1) $(am__append_2) \
$(am__append_3) $(am__append_4)
projects / thirdparty / openwrt.git / commitdiff
