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amdgcn: Pass -mstack-size through to runtime

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But only for the offload case.

gcc/ChangeLog:

	* config/gcn/mkoffload.cc (gcn_stack_size): New global variable.
	(process_asm): Create a constructor for GCN_STACK_SIZE.
	(main): Parse the -mstack-size option.
This commit is contained in:
Andrew Stubbs 2023-02-06 12:47:28 +00:00
parent 7433747543
commit 45e01229af
1 changed files with 18 additions and 0 deletions
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18
gcc/config/gcn/mkoffload.cc
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@ -117,6 +117,8 @@ uint32_t elf_arch = EF_AMDGPU_MACH_AMDGCN_GFX803; // Default GPU architecture.
uint32_t elf_flags =
(EF_AMDGPU_FEATURE_XNACK_ANY_V4 | EF_AMDGPU_FEATURE_SRAMECC_ANY_V4);
static int gcn_stack_size = 0; /* Zero means use default. */
/* Delete tempfiles. */
void
@ -662,6 +664,18 @@ process_asm (FILE *in, FILE *out, FILE *cfile)
}
fprintf (cfile, "\n};\n\n");
/* Set the stack size if the user configured a value. */
if (gcn_stack_size)
fprintf (cfile,
"static __attribute__((constructor))\n"
"void configure_stack_size (void)\n"
"{\n"
" const char *val = getenv (\"GCN_STACK_SIZE\");\n"
" if (!val || val[0] == '\\0')\n"
" setenv (\"GCN_STACK_SIZE\", \"%d\", true);\n"
"}\n\n",
gcn_stack_size);
obstack_free (&fns_os, NULL);
for (i = 0; i < dims_count; i++)
free (dims[i].name);
@ -920,6 +934,10 @@ main (int argc, char **argv)
elf_arch = EF_AMDGPU_MACH_AMDGCN_GFX908;
else if (strcmp (argv[i], "-march=gfx90a") == 0)
elf_arch = EF_AMDGPU_MACH_AMDGCN_GFX90a;
#define STR "-mstack-size="
else if (startswith (argv[i], STR))
gcn_stack_size = atoi (argv[i] + strlen (STR));
#undef STR
}
if (!(fopenacc ^ fopenmp))