automatic import of gccopeneuler24.03_LTS_SP1

1 files changed, 177 insertions, 0 deletions

diff --git a/0140-Backport-SME-mode-switching-Pass-the-set-of-live-reg.patch b/0140-Backport-SME-mode-switching-Pass-the-set-of-live-reg.patch
new file mode 100644
index 0000000..da76e1b
--- /dev/null
+++ b/0140-Backport-SME-mode-switching-Pass-the-set-of-live-reg.patch
@@ -0,0 +1,177 @@
+From 4457604c11c0a32f3736d73429d1e5fb7baae3a5 Mon Sep 17 00:00:00 2001
+From: Richard Sandiford <richard.sandiford@arm.com>
+Date: Sat, 11 Nov 2023 17:28:58 +0000
+Subject: [PATCH 041/157] [Backport][SME] mode-switching: Pass the set of live
+ registers to the after hook
+
+Reference: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=93d65f39bc5c3dc318deb6da0e3633f3a4c6c34d
+
+This patch passes the set of live hard registers to the after hook,
+like the previous one did for the needed hook.
+
+gcc/
+	* target.def (mode_switching.after): Add a regs_live parameter.
+	* doc/tm.texi: Regenerate.
+	* config/epiphany/epiphany-protos.h (epiphany_mode_after): Update
+	accordingly.
+	* config/epiphany/epiphany.cc (epiphany_mode_needed): Likewise.
+	(epiphany_mode_after): Likewise.
+	* config/i386/i386.cc (ix86_mode_after): Likewise.
+	* config/riscv/riscv.cc (riscv_mode_after): Likewise.
+	* config/sh/sh.cc (sh_mode_after): Likewise.
+	* mode-switching.cc (optimize_mode_switching): Likewise.
+---
+ gcc/config/epiphany/epiphany-protos.h | 3 ++-
+ gcc/config/epiphany/epiphany.cc       | 5 +++--
+ gcc/config/i386/i386.cc               | 2 +-
+ gcc/config/sh/sh.cc                   | 5 +++--
+ gcc/doc/tm.texi                       | 4 +++-
+ gcc/mode-switching.cc                 | 8 ++++----
+ gcc/target.def                        | 4 +++-
+ 7 files changed, 19 insertions(+), 12 deletions(-)
+
+diff --git a/gcc/config/epiphany/epiphany-protos.h b/gcc/config/epiphany/epiphany-protos.h
+index d463e5483..6326b7e80 100644
+--- a/gcc/config/epiphany/epiphany-protos.h
++++ b/gcc/config/epiphany/epiphany-protos.h
+@@ -46,8 +46,9 @@ extern void epiphany_insert_mode_switch_use (rtx_insn *insn, int, int);
+ extern void epiphany_expand_set_fp_mode (rtx *operands);
+ #ifdef HARD_CONST
+ extern int epiphany_mode_needed (int entity, rtx_insn *insn, HARD_REG_SET);
++extern int epiphany_mode_after (int entity, int last_mode, rtx_insn *insn,
++				HARD_REG_SET);
+ #endif
+-extern int epiphany_mode_after (int entity, int last_mode, rtx_insn *insn);
+ extern bool epiphany_epilogue_uses (int regno);
+ extern bool epiphany_optimize_mode_switching (int entity);
+ extern bool epiphany_is_interrupt_p (tree);
+diff --git a/gcc/config/epiphany/epiphany.cc b/gcc/config/epiphany/epiphany.cc
+index be0fbc68c..62636b1ec 100644
+--- a/gcc/config/epiphany/epiphany.cc
++++ b/gcc/config/epiphany/epiphany.cc
+@@ -2437,7 +2437,7 @@ epiphany_mode_needed (int entity, rtx_insn *insn, HARD_REG_SET)
+     return 2;
+   case EPIPHANY_MSW_ENTITY_ROUND_KNOWN:
+     if (recog_memoized (insn) == CODE_FOR_set_fp_mode)
+-      mode = (enum attr_fp_mode) epiphany_mode_after (entity, mode, insn);
++      mode = (enum attr_fp_mode) epiphany_mode_after (entity, mode, insn, {});
+     /* Fall through.  */
+   case EPIPHANY_MSW_ENTITY_NEAREST:
+   case EPIPHANY_MSW_ENTITY_TRUNC:
+@@ -2498,7 +2498,8 @@ epiphany_mode_entry_exit (int entity, bool exit)
+ }
+ 
+ int
+-epiphany_mode_after (int entity, int last_mode, rtx_insn *insn)
++epiphany_mode_after (int entity, int last_mode, rtx_insn *insn,
++		     HARD_REG_SET)
+ {
+   /* We have too few call-saved registers to hope to keep the masks across
+      calls.  */
+diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc
+index 4d591d217..593185fa6 100644
+--- a/gcc/config/i386/i386.cc
++++ b/gcc/config/i386/i386.cc
+@@ -14583,7 +14583,7 @@ ix86_avx_u128_mode_after (int mode, rtx_insn *insn)
+ /* Return the mode that an insn results in.  */
+ 
+ static int
+-ix86_mode_after (int entity, int mode, rtx_insn *insn)
++ix86_mode_after (int entity, int mode, rtx_insn *insn, HARD_REG_SET)
+ {
+   switch (entity)
+     {
+diff --git a/gcc/config/sh/sh.cc b/gcc/config/sh/sh.cc
+index 85e83e12e..74d61c43b 100644
+--- a/gcc/config/sh/sh.cc
++++ b/gcc/config/sh/sh.cc
+@@ -196,7 +196,7 @@ static HOST_WIDE_INT rounded_frame_size (int);
+ static bool sh_frame_pointer_required (void);
+ static void sh_emit_mode_set (int, int, int, HARD_REG_SET);
+ static int sh_mode_needed (int, rtx_insn *, HARD_REG_SET);
+-static int sh_mode_after (int, int, rtx_insn *);
++static int sh_mode_after (int, int, rtx_insn *, HARD_REG_SET);
+ static int sh_mode_entry (int);
+ static int sh_mode_exit (int);
+ static int sh_mode_priority (int entity, int n);
+@@ -12535,7 +12535,8 @@ sh_mode_needed (int entity ATTRIBUTE_UNUSED, rtx_insn *insn, HARD_REG_SET)
+ }
+ 
+ static int
+-sh_mode_after (int entity ATTRIBUTE_UNUSED, int mode, rtx_insn *insn)
++sh_mode_after (int entity ATTRIBUTE_UNUSED, int mode, rtx_insn *insn,
++	       HARD_REG_SET)
+ {
+   if (TARGET_HITACHI && recog_memoized (insn) >= 0 &&
+       get_attr_fp_set (insn) != FP_SET_NONE)
+diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
+index d8ac6c4d6..7fce485b2 100644
+--- a/gcc/doc/tm.texi
++++ b/gcc/doc/tm.texi
+@@ -10289,12 +10289,14 @@ such requirement.  @var{regs_live} contains the set of hard registers
+ that are live before @var{insn}.
+ @end deftypefn
+ 
+-@deftypefn {Target Hook} int TARGET_MODE_AFTER (int @var{entity}, int @var{mode}, rtx_insn *@var{insn})
++@deftypefn {Target Hook} int TARGET_MODE_AFTER (int @var{entity}, int @var{mode}, rtx_insn *@var{insn}, HARD_REG_SET @var{regs_live})
+ @var{entity} is an integer specifying a mode-switched entity.
+ If this hook is defined, it is evaluated for every @var{insn} during mode
+ switching.  It returns the mode that @var{entity} is in after @var{insn}
+ has been executed.  @var{mode} is the mode that @var{entity} was in
+ before @var{insn} was executed, taking account of @var{TARGET_MODE_NEEDED}.
++@var{regs_live} is the set of hard registers that are live after @var{insn}
++has been executed.
+ 
+ @var{mode} is equal to the number of modes defined for @var{entity}
+ if the mode before @var{insn} is unknown.  The hook should likewise return
+diff --git a/gcc/mode-switching.cc b/gcc/mode-switching.cc
+index 6bbda5058..4f0445894 100644
+--- a/gcc/mode-switching.cc
++++ b/gcc/mode-switching.cc
+@@ -631,10 +631,6 @@ optimize_mode_switching (void)
+ 		      last_mode = mode;
+ 		    }
+ 
+-		  if (targetm.mode_switching.after)
+-		    last_mode = targetm.mode_switching.after (e, last_mode,
+-							      insn);
+-
+ 		  /* Update LIVE_NOW.  */
+ 		  for (link = REG_NOTES (insn); link; link = XEXP (link, 1))
+ 		    if (REG_NOTE_KIND (link) == REG_DEAD)
+@@ -644,6 +640,10 @@ optimize_mode_switching (void)
+ 		  for (link = REG_NOTES (insn); link; link = XEXP (link, 1))
+ 		    if (REG_NOTE_KIND (link) == REG_UNUSED)
+ 		      reg_dies (XEXP (link, 0), &live_now);
++
++		  if (targetm.mode_switching.after)
++		    last_mode = targetm.mode_switching.after (e, last_mode,
++							      insn, live_now);
+ 		}
+ 	    }
+ 
+diff --git a/gcc/target.def b/gcc/target.def
+index 06a52bdaf..67c20bbb0 100644
+--- a/gcc/target.def
++++ b/gcc/target.def
+@@ -7014,6 +7014,8 @@ If this hook is defined, it is evaluated for every @var{insn} during mode\n\
+ switching.  It returns the mode that @var{entity} is in after @var{insn}\n\
+ has been executed.  @var{mode} is the mode that @var{entity} was in\n\
+ before @var{insn} was executed, taking account of @var{TARGET_MODE_NEEDED}.\n\
++@var{regs_live} is the set of hard registers that are live after @var{insn}\n\
++has been executed.\n\
+ \n\
+ @var{mode} is equal to the number of modes defined for @var{entity}\n\
+ if the mode before @var{insn} is unknown.  The hook should likewise return\n\
+@@ -7021,7 +7023,7 @@ the number of modes if it does not know what mode @var{entity} has after\n\
+ @var{insn}.\n\
+ \n\
+ Not defining the hook is equivalent to returning @var{mode}.",
+- int, (int entity, int mode, rtx_insn *insn), NULL)
++ int, (int entity, int mode, rtx_insn *insn, HARD_REG_SET regs_live), NULL)
+ 
+ DEFHOOK
+ (entry,
+-- 
+2.33.0
+