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[PATCH 5/8] nvptx mkoffload: pass -mgomp for OpenMP offloading
- From: Alexander Monakov <amonakov at ispras dot ru>
- To: gcc-patches at gcc dot gnu dot org
- Cc: Nathan Sidwell <nathan at acm dot org>
- Date: Thu, 9 Jun 2016 19:53:57 +0300
- Subject: [PATCH 5/8] nvptx mkoffload: pass -mgomp for OpenMP offloading
- Authentication-results: sourceware.org; auth=none
- References: <1465491240-21514-1-git-send-email-amonakov at ispras dot ru>
This patch wires up use of alternative -mgomp multilib for OpenMP offloading
via nvptx mkoffload. It makes OpenACC and OpenMP incompatible for
simultaneous offloading compilation, so I've added a diagnostic for that.
* config/nvptx/mkoffload.c (main): Check that either OpenACC or OpenMP
is selected. Pass -mgomp to offload compiler in OpenMP case.
---
gcc/config/nvptx/mkoffload.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/gcc/config/nvptx/mkoffload.c b/gcc/config/nvptx/mkoffload.c
index c8eed45..d876c7b 100644
--- a/gcc/config/nvptx/mkoffload.c
+++ b/gcc/config/nvptx/mkoffload.c
@@ -460,6 +460,7 @@ main (int argc, char **argv)
/* Scan the argument vector. */
bool fopenmp = false;
+ bool fopenacc = false;
for (int i = 1; i < argc; i++)
{
#define STR "-foffload-abi="
@@ -476,11 +477,15 @@ main (int argc, char **argv)
#undef STR
else if (strcmp (argv[i], "-fopenmp") == 0)
fopenmp = true;
+ else if (strcmp (argv[i], "-fopenacc") == 0)
+ fopenacc = true;
else if (strcmp (argv[i], "-save-temps") == 0)
save_temps = true;
else if (strcmp (argv[i], "-v") == 0)
verbose = true;
}
+ if (!(fopenacc ^ fopenmp))
+ fatal_error (input_location, "either -fopenacc or -fopenmp must be set");
struct obstack argv_obstack;
obstack_init (&argv_obstack);
@@ -501,6 +506,8 @@ main (int argc, char **argv)
default:
gcc_unreachable ();
}
+ if (fopenmp)
+ obstack_ptr_grow (&argv_obstack, "-mgomp");
for (int ix = 1; ix != argc; ix++)
{
--
2.6.6