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From: "mhillen at linux dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/101876] [290x] vector builtin vec_permi fails to
 resolve with #pragma GCC target
Date: Thu, 12 Aug 2021 10:30:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101876

--- Comment #1 from Marius Hillenbrand <mhillen at linux dot ibm.com> ---
Comparing results with -mdebug, the variant that should match is ignored

with -march=3Dz13:

...
s390_resolve_overloaded_builtin, code =3D  606, __builtin_s390_vec_permi -=
=20
overloaded
checking variant number: 187 mismatch in operand: 1 incoming: v2di expected:
vector(2) long long int
checking variant number: 188 mismatch in operand: 1 incoming: v2di expected:
vector(2) long long unsigned int
checking variant number: 189 perfect match score: 0
...

with -march=3DzEC12:
...
s390_resolve_overloaded_builtin, code =3D  606, __builtin_s390_vec_permi -=
=20
overloaded
checking variant number: 187 mismatch in operand: 1 incoming: v2di expected:
vector(2) long long int
checking variant number: 188 mismatch in operand: 1 incoming: v2di expected:
vector(2) long long unsigned int
checking variant number: 189 mismatch in operand: 1 incoming: v2di expected:
vector(2) long long unsigned int
checking variant number: 190 mismatch in operand: 1 incoming: v2di expected:
vector(2) double
In file included from tests/target-pragma-vector-builtins.c:13:
tests/target-pragma-vector-builtins.c: In function 'foo':
tests/target-pragma-vector-builtins.c:23:9: error: invalid parameter
combination for intrinsic '__builtin_s390_vec_permi'
   23 |     v =3D vec_permi(v, v, 0);
      |         ^~~~~~~~~
...=