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rs6000: Remove builtin mask check from builtin_decl [PR102347]

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As the discussion in PR102347, currently builtin_decl is invoked so
early, it's when making up the function_decl for builtin functions,
at that time the rs6000_builtin_mask could be wrong for those
builtins sitting in #pragma/attribute target functions, though it
will be updated properly later when LTO processes all nodes.

This patch is to align with the practice i386 port adopts, also
align with r10-7462 by relaxing builtin mask checking in some places.

gcc/ChangeLog:

	PR target/102347
	* config/rs6000/rs6000-call.c (rs6000_builtin_decl): Remove builtin mask
	check.

gcc/testsuite/ChangeLog:

	PR target/102347
	* gcc.target/powerpc/pr102347.c: New test.
This commit is contained in:
Kewen Lin 2021-11-29 21:22:32 -06:00
parent aca68829d7
commit 6c7d489a1e
2 changed files with 19 additions and 10 deletions
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14
gcc/config/rs6000/rs6000-call.c
View File

@ -16633,7 +16633,10 @@ rs6000_new_builtin_decl (unsigned code, bool /* initialize_p */)
return rs6000_builtin_decls_x[code];
}
/* Returns the rs6000 builtin decl for CODE. */
/* Returns the rs6000 builtin decl for CODE. Note that we don't check
the builtin mask here since there could be some #pragma/attribute
target functions and the rs6000_builtin_mask could be wrong when
this checking happens, though it will be updated properly later. */
tree
rs6000_builtin_decl (unsigned code, bool initialize_p ATTRIBUTE_UNUSED)
@ -16641,18 +16644,9 @@ rs6000_builtin_decl (unsigned code, bool initialize_p ATTRIBUTE_UNUSED)
if (new_builtins_are_live)
return rs6000_new_builtin_decl (code, initialize_p);
HOST_WIDE_INT fnmask;
if (code >= RS6000_BUILTIN_COUNT)
return error_mark_node;
fnmask = rs6000_builtin_info[code].mask;
if ((fnmask & rs6000_builtin_mask) != fnmask)
{
rs6000_invalid_builtin ((enum rs6000_builtins)code);
return error_mark_node;
}
return rs6000_builtin_decls[code];
}

15
gcc/testsuite/gcc.target/powerpc/pr102347.c Normal file
View File

@ -0,0 +1,15 @@
/* { dg-do link } */
/* { dg-require-effective-target power10_ok } */
/* { dg-require-effective-target lto } */
/* { dg-options "-flto -mdejagnu-cpu=power9" } */
/* Verify there are no error messages in LTO mode. */
#pragma GCC target "cpu=power10"
int main ()
{
float *b;
__vector_quad c;
__builtin_mma_disassemble_acc (b, &c);
return 0;
}