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toolchain/gcc: replace revert with upstream fix

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This will make upgrade to v11.3.0 easier and follows upstream more
closely.

Fixes: #757

Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
(cherry picked from commit 0dca1060fd48d261f4ffead6efebd16170014ee3)
[Add fixes]
Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
This commit is contained in:
Ilya Lipnitskiy 2021-12-07 17:28:22 -08:00 committed by Tianling Shen
parent 3a1aeb313e
commit 162632989b
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GPG Key ID: 6850B6345C862176
2 changed files with 0 additions and 271 deletions
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160
toolchain/gcc/patches/11.3.0/001-Revert-Cleanup-range-of-address-calculations.patch
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@ -1,160 +0,0 @@
From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 16 Nov 2021 10:39:51 +0100
Subject: [PATCH] Revert "Cleanup range of address calculations."
This reverts commit 47923622c663ffad8b14aa93706183290d4f6791.
This commit is causing issues with offset of struct members.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103255
---
delete mode 100644 gcc/testsuite/gcc.dg/tree-ssa/pr78655.c
--- a/gcc/gimple-range.cc
+++ b/gcc/gimple-range.cc
@@ -431,9 +431,8 @@ gimple_ranger::range_of_range_op (irange
m_cache.register_dependency (lhs, op2);
}
- if (gimple_code (s) == GIMPLE_ASSIGN
- && gimple_assign_rhs_code (s) == ADDR_EXPR)
- return range_of_address (r, s);
+ if (range_of_non_trivial_assignment (r, s))
+ return true;
if (range_of_expr (range1, op1, s))
{
@@ -447,84 +446,48 @@ gimple_ranger::range_of_range_op (irange
return true;
}
-// Calculate the range of an assignment containing an ADDR_EXPR.
+// Calculate the range of a non-trivial assignment. That is, is one
+// inolving arithmetic on an SSA name (for example, an ADDR_EXPR).
// Return the range in R.
-// If a range cannot be calculated, set it to VARYING and return true.
+//
+// If a range cannot be calculated, return false.
bool
-gimple_ranger::range_of_address (irange &r, gimple *stmt)
+gimple_ranger::range_of_non_trivial_assignment (irange &r, gimple *stmt)
{
- gcc_checking_assert (gimple_code (stmt) == GIMPLE_ASSIGN);
- gcc_checking_assert (gimple_assign_rhs_code (stmt) == ADDR_EXPR);
+ if (gimple_code (stmt) != GIMPLE_ASSIGN)
+ return false;
- bool strict_overflow_p;
- tree expr = gimple_assign_rhs1 (stmt);
- poly_int64 bitsize, bitpos;
- tree offset;
- machine_mode mode;
- int unsignedp, reversep, volatilep;
- tree base = get_inner_reference (TREE_OPERAND (expr, 0), &bitsize,
- &bitpos, &offset, &mode, &unsignedp,
- &reversep, &volatilep);
-
-
- if (base != NULL_TREE
- && TREE_CODE (base) == MEM_REF
- && TREE_CODE (TREE_OPERAND (base, 0)) == SSA_NAME)
+ tree base = gimple_range_base_of_assignment (stmt);
+ if (base)
{
- tree ssa = TREE_OPERAND (base, 0);
- gcc_checking_assert (irange::supports_type_p (TREE_TYPE (ssa)));
- range_of_expr (r, ssa, stmt);
- range_cast (r, TREE_TYPE (gimple_assign_rhs1 (stmt)));
-
- poly_offset_int off = 0;
- bool off_cst = false;
- if (offset == NULL_TREE || TREE_CODE (offset) == INTEGER_CST)
+ if (TREE_CODE (base) == MEM_REF)
{
- off = mem_ref_offset (base);
- if (offset)
- off += poly_offset_int::from (wi::to_poly_wide (offset),
- SIGNED);
- off <<= LOG2_BITS_PER_UNIT;
- off += bitpos;
- off_cst = true;
+ if (TREE_CODE (TREE_OPERAND (base, 0)) == SSA_NAME)
+ {
+ int_range_max range1;
+ tree ssa = TREE_OPERAND (base, 0);
+ if (range_of_expr (range1, ssa, stmt))
+ {
+ tree type = TREE_TYPE (ssa);
+ range_operator *op = range_op_handler (POINTER_PLUS_EXPR,
+ type);
+ int_range<2> offset (TREE_OPERAND (base, 1),
+ TREE_OPERAND (base, 1));
+ op->fold_range (r, type, range1, offset);
+ return true;
+ }
+ }
+ return false;
}
- /* If &X->a is equal to X, the range of X is the result. */
- if (off_cst && known_eq (off, 0))
- return true;
- else if (flag_delete_null_pointer_checks
- && !TYPE_OVERFLOW_WRAPS (TREE_TYPE (expr)))
- {
- /* For -fdelete-null-pointer-checks -fno-wrapv-pointer we don't
- allow going from non-NULL pointer to NULL. */
- if(!range_includes_zero_p (&r))
- return true;
- }
- /* If MEM_REF has a "positive" offset, consider it non-NULL
- always, for -fdelete-null-pointer-checks also "negative"
- ones. Punt for unknown offsets (e.g. variable ones). */
- if (!TYPE_OVERFLOW_WRAPS (TREE_TYPE (expr))
- && off_cst
- && known_ne (off, 0)
- && (flag_delete_null_pointer_checks || known_gt (off, 0)))
+ if (gimple_assign_rhs_code (stmt) == ADDR_EXPR)
{
+ // Handle "= &a" and return non-zero.
r = range_nonzero (TREE_TYPE (gimple_assign_rhs1 (stmt)));
return true;
}
- r = int_range<2> (TREE_TYPE (gimple_assign_rhs1 (stmt)));
- return true;
- }
-
- // Handle "= &a".
- if (tree_single_nonzero_warnv_p (expr, &strict_overflow_p))
- {
- r = range_nonzero (TREE_TYPE (gimple_assign_rhs1 (stmt)));
- return true;
}
-
- // Otherwise return varying.
- r = int_range<2> (TREE_TYPE (gimple_assign_rhs1 (stmt)));
- return true;
+ return false;
}
// Calculate a range for phi statement S and return it in R.
--- a/gcc/gimple-range.h
+++ b/gcc/gimple-range.h
@@ -62,7 +62,7 @@ protected:
ranger_cache m_cache;
private:
bool range_of_phi (irange &r, gphi *phi);
- bool range_of_address (irange &r, gimple *s);
+ bool range_of_non_trivial_assignment (irange &r, gimple *s);
bool range_of_builtin_call (irange &r, gcall *call);
bool range_with_loop_info (irange &r, tree name);
void range_of_ssa_name_with_loop_info (irange &, tree, class loop *,
--- a/gcc/range-op.cc
+++ b/gcc/range-op.cc
@@ -3447,7 +3447,6 @@ pointer_table::pointer_table ()
set (GT_EXPR, op_gt);
set (GE_EXPR, op_ge);
set (SSA_NAME, op_identity);
- set (INTEGER_CST, op_integer_cst);
set (ADDR_EXPR, op_addr);
set (NOP_EXPR, op_convert);
set (CONVERT_EXPR, op_convert);

111
toolchain/gcc/patches/11.3.0/930-fix-mips-noexecstack.patch
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@ -1,111 +0,0 @@
From da45b3fde60095756f5f6030f6012c23a3d34429 Mon Sep 17 00:00:00 2001
From: Andrew McDonnell <bugs@andrewmcdonnell.net>
Date: Fri, 3 Oct 2014 19:09:00 +0930
Subject: Add .note.GNU-stack section
See http://lists.busybox.net/pipermail/uclibc/2014-October/048671.html
Below copied from https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02430.html
Re: [Patch, MIPS] Add .note.GNU-stack section
From: Steve Ellcey <sellcey at mips dot com>
On Wed, 2014-09-10 at 10:15 -0700, Eric Christopher wrote:
>
>
> On Wed, Sep 10, 2014 at 9:27 AM, <pinskia@gmail.com> wrote:
> This works except you did not update the assembly files in
> libgcc or glibc. We (Cavium) have the same patch in our tree
> for a few released versions.
> Mind just checking yours in then Andrew?
> Thanks!
> -eric
I talked to Andrew about what files he changed in GCC and created and
tested this new patch. Andrew also mentioned changing some assembly
files in glibc but I don't see any use of '.section .note.GNU-stack' in
any assembly files in glibc (for any platform) so I wasn't planning on
creating a glibc to add them to mips glibc assembly language files.
OK to check in this patch?
Steve Ellcey
sellcey@mips.com
2014-09-26 Steve Ellcey <sellcey@mips.com>
---
gcc/config/mips/mips.c | 3 +++
libgcc/config/mips/crti.S | 4 ++++
libgcc/config/mips/crtn.S | 3 +++
libgcc/config/mips/mips16.S | 4 ++++
libgcc/config/mips/vr4120-div.S | 4 ++++
5 files changed, 18 insertions(+)
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -22890,6 +22890,9 @@ mips_asm_file_end (void)
#define TARGET_ASM_FILE_END mips_asm_file_end
+#undef TARGET_ASM_FILE_END
+#define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
struct gcc_target targetm = TARGET_INITIALIZER;
#include "gt-mips.h"
--- a/libgcc/config/mips/crti.S
+++ b/libgcc/config/mips/crti.S
@@ -24,6 +24,10 @@ see the files COPYING3 and COPYING.RUNTI
/* An executable stack is *not* required for these functions. */
#include "gnustack.h"
+
+/* An executable stack is *not* required for these functions. */
+ .section .note.GNU-stack,"",%progbits
+
/* 4 slots for argument spill area. 1 for cpreturn, 1 for stack.
Return spill offset of 40 and 20. Aligned to 16 bytes for n32. */
--- a/libgcc/config/mips/crtn.S
+++ b/libgcc/config/mips/crtn.S
@@ -24,6 +24,9 @@ see the files COPYING3 and COPYING.RUNTI
/* An executable stack is *not* required for these functions. */
#include "gnustack.h"
+/* An executable stack is *not* required for these functions. */
+ .section .note.GNU-stack,"",%progbits
+
/* 4 slots for argument spill area. 1 for cpreturn, 1 for stack.
Return spill offset of 40 and 20. Aligned to 16 bytes for n32. */
--- a/libgcc/config/mips/mips16.S
+++ b/libgcc/config/mips/mips16.S
@@ -51,6 +51,10 @@ see the files COPYING3 and COPYING.RUNTI
values using the soft-float calling convention, but do the actual
operation using the hard floating point instructions. */
+/* An executable stack is *not* required for these functions. */
+ .section .note.GNU-stack,"",%progbits
+ .previous
+
#if defined _MIPS_SIM && (_MIPS_SIM == _ABIO32 || _MIPS_SIM == _ABIO64)
/* This file contains 32-bit assembly code. */
--- a/libgcc/config/mips/vr4120-div.S
+++ b/libgcc/config/mips/vr4120-div.S
@@ -29,6 +29,10 @@ see the files COPYING3 and COPYING.RUNTI
-mfix-vr4120. div and ddiv do not give the correct result when one
of the operands is negative. */
+/* An executable stack is *not* required for these functions. */
+ .section .note.GNU-stack,"",%progbits
+ .previous
+
.set nomips16
#define DIV \