From 17dc08edc28f4fc25f6cd7b71f0d0a0d1ec2f833 Mon Sep 17 00:00:00 2001 From: Kwok Cheung Yeung Date: Mon, 3 Aug 2020 17:38:13 +0200 Subject: nvptx: Add support for subword compare-and-swap This adds support for __sync_val_compare_and_swap and __sync_bool_compare_and_swap for 1-byte and 2-byte long values, which are not natively supported on nvptx. Build and reg-tested on nvptx. Build and reg-tested libgomp on x86_64 with nvptx accelerator. 2020-07-16 Kwok Cheung Yeung libgcc/ * config/nvptx/atomic.c: New. * config/nvptx/t-nvptx (LIB2ADD): Add atomic.c. gcc/testsuite/ * gcc.target/nvptx/ia64-sync-5.c: New. libgomp/ * testsuite/libgomp.c-c++-common/reduction-16.c: New. --- .../testsuite/libgomp.c-c++-common/reduction-16.c | 53 ++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 libgomp/testsuite/libgomp.c-c++-common/reduction-16.c (limited to 'libgomp/testsuite/libgomp.c-c++-common/reduction-16.c') diff --git a/libgomp/testsuite/libgomp.c-c++-common/reduction-16.c b/libgomp/testsuite/libgomp.c-c++-common/reduction-16.c new file mode 100644 index 0000000..d0e82b0 --- /dev/null +++ b/libgomp/testsuite/libgomp.c-c++-common/reduction-16.c @@ -0,0 +1,53 @@ +/* { dg-do run } */ + +#include + +#define N 512 + +#define GENERATE_TEST(T) \ +int test_##T (void) \ +{ \ + T a[N], res = 0; \ + \ + for (int i = 0; i < N; ++i) \ + a[i] = i & 1; \ + \ +_Pragma("omp target teams distribute reduction(||:res) defaultmap(tofrom:scalar)") \ + for (int i = 0; i < N; ++i) \ + res = res || a[i]; \ + \ + /* res should be non-zero. */\ + if (!res) \ + return 1; \ + \ +_Pragma("omp target teams distribute reduction(&&:res) defaultmap(tofrom:scalar)") \ + for (int i = 0; i < N; ++i) \ + res = res && a[i]; \ + \ + /* res should be zero. */ \ + return res; \ +} + +GENERATE_TEST(char) +GENERATE_TEST(short) +GENERATE_TEST(int) +GENERATE_TEST(long) +#ifdef __SIZEOF_INT128__ +GENERATE_TEST(__int128) +#endif + +int main(void) +{ + if (test_char ()) + abort (); + if (test_short ()) + abort (); + if (test_int ()) + abort (); + if (test_long ()) + abort (); +#ifdef __SIZEOF_INT128__ + if (test___int128 ()) + abort (); +#endif +} -- cgit v1.1