--- /dev/null
+/* { dg-do run } */
+
+/* Test basic functionality of the intrinsics. */
+
+/* This is a copy of gcc.dg/ia64-sync-2.c, extended to test 8-bit and 16-bit
+ values as well. */
+
+/* Ideally this test should require sync_char_short and sync_int_long, but we
+ only support a subset at the moment. */
+
+__extension__ typedef __SIZE_TYPE__ size_t;
+
+extern void abort (void);
+extern void *memcpy (void *, const void *, size_t);
+extern int memcmp (const void *, const void *, size_t);
+
+static char AC[4];
+static char init_qi[4] = { -30,-30,-50,-50 };
+static char test_qi[4] = { -115,-115,25,25 };
+
+static void
+do_qi (void)
+{
+ if (__sync_val_compare_and_swap(AC+0, -30, -115) != -30)
+ abort ();
+ if (__sync_val_compare_and_swap(AC+0, -30, -115) != -115)
+ abort ();
+ if (__sync_bool_compare_and_swap(AC+1, -30, -115) != 1)
+ abort ();
+ if (__sync_bool_compare_and_swap(AC+1, -30, -115) != 0)
+ abort ();
+
+ if (__sync_val_compare_and_swap(AC+2, AC[2], 25) != -50)
+ abort ();
+ if (__sync_val_compare_and_swap(AC+2, AC[2], 25) != 25)
+ abort ();
+ if (__sync_bool_compare_and_swap(AC+3, AC[3], 25) != 1)
+ abort ();
+ if (__sync_bool_compare_and_swap(AC+3, AC[3], 25) != 1)
+ abort ();
+}
+
+static short AS[4];
+static short init_hi[4] = { -30,-30,-50,-50 };
+static short test_hi[4] = { -115,-115,25,25 };
+
+static void
+do_hi (void)
+{
+ if (__sync_val_compare_and_swap(AS+0, -30, -115) != -30)
+ abort ();
+ if (__sync_val_compare_and_swap(AS+0, -30, -115) != -115)
+ abort ();
+ if (__sync_bool_compare_and_swap(AS+1, -30, -115) != 1)
+ abort ();
+ if (__sync_bool_compare_and_swap(AS+1, -30, -115) != 0)
+ abort ();
+
+ if (__sync_val_compare_and_swap(AS+2, AS[2], 25) != -50)
+ abort ();
+ if (__sync_val_compare_and_swap(AS+2, AS[2], 25) != 25)
+ abort ();
+ if (__sync_bool_compare_and_swap(AS+3, AS[3], 25) != 1)
+ abort ();
+ if (__sync_bool_compare_and_swap(AS+3, AS[3], 25) != 1)
+ abort ();
+}
+
+static int AI[4];
+static int init_si[4] = { -30,-30,-50,-50 };
+static int test_si[4] = { -115,-115,25,25 };
+
+static void
+do_si (void)
+{
+ if (__sync_val_compare_and_swap(AI+0, -30, -115) != -30)
+ abort ();
+ if (__sync_val_compare_and_swap(AI+0, -30, -115) != -115)
+ abort ();
+ if (__sync_bool_compare_and_swap(AI+1, -30, -115) != 1)
+ abort ();
+ if (__sync_bool_compare_and_swap(AI+1, -30, -115) != 0)
+ abort ();
+
+ if (__sync_val_compare_and_swap(AI+2, AI[2], 25) != -50)
+ abort ();
+ if (__sync_val_compare_and_swap(AI+2, AI[2], 25) != 25)
+ abort ();
+ if (__sync_bool_compare_and_swap(AI+3, AI[3], 25) != 1)
+ abort ();
+ if (__sync_bool_compare_and_swap(AI+3, AI[3], 25) != 1)
+ abort ();
+}
+
+static long AL[4];
+static long init_di[4] = { -30,-30,-50,-50 };
+static long test_di[4] = { -115,-115,25,25 };
+
+static void
+do_di (void)
+{
+ if (__sync_val_compare_and_swap(AL+0, -30, -115) != -30)
+ abort ();
+ if (__sync_val_compare_and_swap(AL+0, -30, -115) != -115)
+ abort ();
+ if (__sync_bool_compare_and_swap(AL+1, -30, -115) != 1)
+ abort ();
+ if (__sync_bool_compare_and_swap(AL+1, -30, -115) != 0)
+ abort ();
+
+ if (__sync_val_compare_and_swap(AL+2, AL[2], 25) != -50)
+ abort ();
+ if (__sync_val_compare_and_swap(AL+2, AL[2], 25) != 25)
+ abort ();
+ if (__sync_bool_compare_and_swap(AL+3, AL[3], 25) != 1)
+ abort ();
+ if (__sync_bool_compare_and_swap(AL+3, AL[3], 25) != 1)
+ abort ();
+}
+
+int main()
+{
+ memcpy(AC, init_qi, sizeof(init_qi));
+ memcpy(AS, init_hi, sizeof(init_hi));
+ memcpy(AI, init_si, sizeof(init_si));
+ memcpy(AL, init_di, sizeof(init_di));
+
+ do_qi ();
+ do_hi ();
+ do_si ();
+ do_di ();
+
+ if (memcmp (AC, test_qi, sizeof(test_qi)))
+ abort ();
+ if (memcmp (AS, test_hi, sizeof(test_hi)))
+ abort ();
+ if (memcmp (AI, test_si, sizeof(test_si)))
+ abort ();
+ if (memcmp (AL, test_di, sizeof(test_di)))
+ abort ();
+
+ return 0;
+}
--- /dev/null
+/* NVPTX atomic operations
+ Copyright (C) 2020 Free Software Foundation, Inc.
+ Contributed by Mentor Graphics.
+
+ 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 <stdbool.h>
+
+/* Implement __sync_val_compare_and_swap and __sync_bool_compare_and_swap
+ for 1 and 2-byte values (which are not natively supported) in terms of
+ __sync_val_compare_and_swap for 4-byte values (which is supported).
+ This assumes that the contents of the word surrounding the subword
+ value that we are interested in are accessible as well (which should
+ normally be the case). */
+
+#define __SYNC_SUBWORD_COMPARE_AND_SWAP(TYPE, SIZE) \
+ \
+TYPE \
+__sync_val_compare_and_swap_##SIZE (TYPE *ptr, TYPE oldval, TYPE newval) \
+{ \
+ unsigned int *wordptr = (unsigned int *)((__UINTPTR_TYPE__ ) ptr & ~3UL); \
+ int shift = ((__UINTPTR_TYPE__ ) ptr & 3UL) * 8; \
+ unsigned int valmask = (1 << (SIZE * 8)) - 1; \
+ unsigned int wordmask = ~(valmask << shift); \
+ unsigned int oldword = *wordptr; \
+ for (;;) \
+ { \
+ TYPE prevval = (oldword >> shift) & valmask; \
+ /* Exit if the subword value previously read from memory is not */ \
+ /* equal to the expected value OLDVAL. */ \
+ if (__builtin_expect (prevval != oldval, 0)) \
+ return prevval; \
+ unsigned int newword = oldword & wordmask; \
+ newword |= ((unsigned int) newval) << shift; \
+ unsigned int prevword \
+ = __sync_val_compare_and_swap_4 (wordptr, oldword, newword); \
+ /* Exit only if the compare-and-swap succeeds on the whole word */ \
+ /* (i.e. the contents of *WORDPTR have not changed since the last */ \
+ /* memory read). */ \
+ if (__builtin_expect (prevword == oldword, 1)) \
+ return oldval; \
+ oldword = prevword; \
+ } \
+} \
+ \
+bool \
+__sync_bool_compare_and_swap_##SIZE (TYPE *ptr, TYPE oldval, TYPE newval) \
+{ \
+ return __sync_val_compare_and_swap_##SIZE (ptr, oldval, newval) == oldval; \
+}
+
+__SYNC_SUBWORD_COMPARE_AND_SWAP (unsigned char, 1)
+__SYNC_SUBWORD_COMPARE_AND_SWAP (unsigned short, 2)
projects / thirdparty / gcc.git / commitdiff
