automatic import of gccopeneuler24.03_LTS_SP1

1 files changed, 110 insertions, 0 deletions

diff --git a/0246-Backport-SME-explow-Allow-dynamic-allocations-after-.patch b/0246-Backport-SME-explow-Allow-dynamic-allocations-after-.patch
new file mode 100644
index 0000000..fdefe48
--- /dev/null
+++ b/0246-Backport-SME-explow-Allow-dynamic-allocations-after-.patch
@@ -0,0 +1,110 @@
+From fe64cc72e6221cf05e40bc868287bd1fcf07479f Mon Sep 17 00:00:00 2001
+From: Richard Sandiford <richard.sandiford@arm.com>
+Date: Mon, 6 Nov 2023 10:49:58 +0000
+Subject: [PATCH 147/157] [Backport][SME] explow: Allow dynamic allocations
+ after vregs
+
+Reference: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=a7a45364dddef399bfb550235166df51108a3142
+
+This patch allows allocate_dynamic_stack_space to be called before
+or after virtual registers have been instantiated.  It uses the
+same approach as allocate_stack_local, which already supported this.
+
+gcc/
+	* function.h (get_stack_dynamic_offset): Declare.
+	* function.cc (get_stack_dynamic_offset): New function,
+	split out from...
+	(get_stack_dynamic_offset): ...here.
+	* explow.cc (allocate_dynamic_stack_space): Handle calls made
+	after virtual registers have been instantiated.
+---
+ gcc/explow.cc   | 10 +++++++---
+ gcc/function.cc | 12 +++++++++++-
+ gcc/function.h  |  1 +
+ 3 files changed, 19 insertions(+), 4 deletions(-)
+
+diff --git a/gcc/explow.cc b/gcc/explow.cc
+index d8aa75ee9..124e8f49e 100644
+--- a/gcc/explow.cc
++++ b/gcc/explow.cc
+@@ -1375,12 +1375,16 @@ allocate_dynamic_stack_space (rtx size, unsigned size_align,
+   HOST_WIDE_INT stack_usage_size = -1;
+   rtx_code_label *final_label;
+   rtx final_target, target;
++  rtx addr = (virtuals_instantiated
++	      ? plus_constant (Pmode, stack_pointer_rtx,
++			       get_stack_dynamic_offset ())
++	      : virtual_stack_dynamic_rtx);
+ 
+   /* If we're asking for zero bytes, it doesn't matter what we point
+      to since we can't dereference it.  But return a reasonable
+      address anyway.  */
+   if (size == const0_rtx)
+-    return virtual_stack_dynamic_rtx;
++    return addr;
+ 
+   /* Otherwise, show we're calling alloca or equivalent.  */
+   cfun->calls_alloca = 1;
+@@ -1532,7 +1536,7 @@ allocate_dynamic_stack_space (rtx size, unsigned size_align,
+       poly_int64 saved_stack_pointer_delta;
+ 
+       if (!STACK_GROWS_DOWNWARD)
+-	emit_move_insn (target, virtual_stack_dynamic_rtx);
++	emit_move_insn (target, force_operand (addr, target));
+ 
+       /* Check stack bounds if necessary.  */
+       if (crtl->limit_stack)
+@@ -1575,7 +1579,7 @@ allocate_dynamic_stack_space (rtx size, unsigned size_align,
+       stack_pointer_delta = saved_stack_pointer_delta;
+ 
+       if (STACK_GROWS_DOWNWARD)
+-	emit_move_insn (target, virtual_stack_dynamic_rtx);
++	emit_move_insn (target, force_operand (addr, target));
+     }
+ 
+   suppress_reg_args_size = false;
+diff --git a/gcc/function.cc b/gcc/function.cc
+index f4fc211a0..e62b2a8d6 100644
+--- a/gcc/function.cc
++++ b/gcc/function.cc
+@@ -1945,6 +1945,16 @@ instantiate_decls (tree fndecl)
+   vec_free (cfun->local_decls);
+ }
+ 
++/* Return the value of STACK_DYNAMIC_OFFSET for the current function.
++   This is done through a function wrapper so that the macro sees a
++   predictable set of included files.  */
++
++poly_int64
++get_stack_dynamic_offset ()
++{
++  return STACK_DYNAMIC_OFFSET (current_function_decl);
++}
++
+ /* Pass through the INSNS of function FNDECL and convert virtual register
+    references to hard register references.  */
+ 
+@@ -1956,7 +1966,7 @@ instantiate_virtual_regs (void)
+   /* Compute the offsets to use for this function.  */
+   in_arg_offset = FIRST_PARM_OFFSET (current_function_decl);
+   var_offset = targetm.starting_frame_offset ();
+-  dynamic_offset = STACK_DYNAMIC_OFFSET (current_function_decl);
++  dynamic_offset = get_stack_dynamic_offset ();
+   out_arg_offset = STACK_POINTER_OFFSET;
+ #ifdef FRAME_POINTER_CFA_OFFSET
+   cfa_offset = FRAME_POINTER_CFA_OFFSET (current_function_decl);
+diff --git a/gcc/function.h b/gcc/function.h
+index 4e8131706..a5846465a 100644
+--- a/gcc/function.h
++++ b/gcc/function.h
+@@ -711,6 +711,7 @@ extern vec<edge> convert_jumps_to_returns (basic_block last_bb, bool simple_p,
+ extern basic_block emit_return_for_exit (edge exit_fallthru_edge,
+ 					 bool simple_p);
+ extern void reposition_prologue_and_epilogue_notes (void);
++extern poly_int64 get_stack_dynamic_offset ();
+ 
+ /* Returns the name of the current function.  */
+ extern const char *fndecl_name (tree);
+-- 
+2.33.0
+