[gcc/devel/omp/gcc-13] amdgcn: Delete inactive libfuncs

[gcc/devel/omp/gcc-13] amdgcn: Delete inactive libfuncs

[Andrew Stubbs]

https://gcc.gnu.org/g:78a5e2a2697075b5668b25069b7bedc7a11f6084

commit 78a5e2a2697075b5668b25069b7bedc7a11f6084
Author: Andrew Stubbs <ams@codesourcery.com>
Date:   Fri Jun 16 17:48:23 2023 +0100

    amdgcn: Delete inactive libfuncs
    
    The HImode libfuncs weren't called and trying to enable them fails because
    TARGET_PROMOTE_FUNCTION_MODE wants to widen the arguments but the signedness
    isn't known.
    
    libgcc/ChangeLog:
    
            * config/gcn/lib2-gcn.h (QItype, UQItype, HItype, UHItype): Delete.
            (__divhi3, __modhi3, __udivhi3, __umodhi3): Delete.
            * config/gcn/t-amdgcn: Don't build lib2-divmod-hi.c.
            * config/gcn/lib2-divmod-hi.c: Removed.
    
    (cherry picked from commit 1ff8ba48a2958b5917653e1bc2ddd5ff22097fe7)

Diff:
---
 libgcc/ChangeLog.omp               |  10 ++++
 libgcc/config/gcn/lib2-divmod-hi.c | 117 -------------------------------------
 libgcc/config/gcn/lib2-gcn.h       |   8 ---
 libgcc/config/gcn/t-amdgcn         |   1 -
 4 files changed, 10 insertions(+), 126 deletions(-)

diff --git a/libgcc/ChangeLog.omp b/libgcc/ChangeLog.omp
index fb563e03a32..866da56e547 100644
--- a/libgcc/ChangeLog.omp
+++ b/libgcc/ChangeLog.omp
@@ -1,3 +1,13 @@
+2023-06-20  Andrew Stubbs  <ams@codesourcery.com>
+
+	Backport from mainline:
+	2023-06-19  Andrew Stubbs  <ams@codesourcery.com>
+
+	* config/gcn/lib2-gcn.h (QItype, UQItype, HItype, UHItype): Delete.
+	(__divhi3, __modhi3, __udivhi3, __umodhi3): Delete.
+	* config/gcn/t-amdgcn: Don't build lib2-divmod-hi.c.
+	* config/gcn/lib2-divmod-hi.c: Removed.
+
 2023-01-24  Thomas Schwinge  <thomas@codesourcery.com>
 
 	* config/nvptx/crt0.c [!HAVE_STDLIB_H]: Don't '#include <stdlib.h>'.
diff --git a/libgcc/config/gcn/lib2-divmod-hi.c b/libgcc/config/gcn/lib2-divmod-hi.c
deleted file mode 100644
index f4584aabcd9..00000000000
--- a/libgcc/config/gcn/lib2-divmod-hi.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/* Copyright (C) 2012-2023 Free Software Foundation, Inc.
-   Contributed by Altera and Mentor Graphics, Inc.
-
-This file is free software; you can redistribute it and/or modify it
-under the terms of the GNU General Public License as published by the
-Free Software Foundation; either version 3, or (at your option) any
-later version.
-
-This file is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-General Public License for more details.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-#include "lib2-gcn.h"
-
-/* 16-bit HI divide and modulo as used in gcn.  */
-
-static UHItype
-udivmodhi4 (UHItype num, UHItype den, word_type modwanted)
-{
-  UHItype bit = 1;
-  UHItype res = 0;
-
-  while (den < num && bit && !(den & (1L<<15)))
-    {
-      den <<=1;
-      bit <<=1;
-    }
-  while (bit)
-    {
-      if (num >= den)
-	{
-	  num -= den;
-	  res |= bit;
-	}
-      bit >>=1;
-      den >>=1;
-    }
-  if (modwanted)
-    return num;
-  return res;
-}
-
-
-HItype
-__divhi3 (HItype a, HItype b)
-{
-  word_type neg = 0;
-  HItype res;
-
-  if (a < 0)
-    {
-      a = -a;
-      neg = !neg;
-    }
-
-  if (b < 0)
-    {
-      b = -b;
-      neg = !neg;
-    }
-
-  res = udivmodhi4 (a, b, 0);
-
-  if (neg)
-    res = -res;
-
-  return res;
-}
-
-
-HItype
-__modhi3 (HItype a, HItype b)
-{
-  word_type neg = 0;
-  HItype res;
-
-  if (a < 0)
-    {
-      a = -a;
-      neg = 1;
-    }
-
-  if (b < 0)
-    b = -b;
-
-  res = udivmodhi4 (a, b, 1);
-
-  if (neg)
-    res = -res;
-
-  return res;
-}
-
-
-UHItype
-__udivhi3 (UHItype a, UHItype b)
-{
-  return udivmodhi4 (a, b, 0);
-}
-
-
-UHItype
-__umodhi3 (UHItype a, UHItype b)
-{
-  return udivmodhi4 (a, b, 1);
-}
-
diff --git a/libgcc/config/gcn/lib2-gcn.h b/libgcc/config/gcn/lib2-gcn.h
index 645245b2128..67ad9bafc19 100644
--- a/libgcc/config/gcn/lib2-gcn.h
+++ b/libgcc/config/gcn/lib2-gcn.h
@@ -27,10 +27,6 @@
 
 /* Types.  */
 
-typedef char QItype __attribute__ ((mode (QI)));
-typedef unsigned char UQItype __attribute__ ((mode (QI)));
-typedef short HItype __attribute__ ((mode (HI)));
-typedef unsigned short UHItype __attribute__ ((mode (HI)));
 typedef int SItype __attribute__ ((mode (SI)));
 typedef unsigned int USItype __attribute__ ((mode (SI)));
 typedef int DItype __attribute__ ((mode (DI)));
@@ -48,10 +44,6 @@ extern SItype __divsi3 (SItype, SItype);
 extern SItype __modsi3 (SItype, SItype);
 extern USItype __udivsi3 (USItype, USItype);
 extern USItype __umodsi3 (USItype, USItype);
-extern HItype __divhi3 (HItype, HItype);
-extern HItype __modhi3 (HItype, HItype);
-extern UHItype __udivhi3 (UHItype, UHItype);
-extern UHItype __umodhi3 (UHItype, UHItype);
 extern SItype __mulsi3 (SItype, SItype);
 
 #endif /* LIB2_GCN_H */
diff --git a/libgcc/config/gcn/t-amdgcn b/libgcc/config/gcn/t-amdgcn
index 38bde54a096..e64953e6185 100644
--- a/libgcc/config/gcn/t-amdgcn
+++ b/libgcc/config/gcn/t-amdgcn
@@ -1,6 +1,5 @@
 LIB2ADD += $(srcdir)/config/gcn/atomic.c \
 	   $(srcdir)/config/gcn/lib2-divmod.c \
-	   $(srcdir)/config/gcn/lib2-divmod-hi.c \
 	   $(srcdir)/config/gcn/lib2-divmod-di.c \
 	   $(srcdir)/config/gcn/lib2-bswapti2.c \
 	   $(srcdir)/config/gcn/unwind-gcn.c