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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/63594] [5 Regression] ICE: in ix86_vector_duplicate_value, at config/i386/i386.c:39831 with -mavx512f
Date: Mon, 20 Oct 2014 09:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63594

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
More thorough testcase (should be tested with different ISAs):
#define C1 c
#define C2 C1, C1
#define C4 C2, C2
#define C8 C4, C4
#define C16 C8, C8
#define C32 C16, C16
#define C64 C32, C32
#define C_(n) n
#define C(n) C_(C##n)

#define T(t,s) \
typedef t v##t##s __attribute__ ((__vector_size__ (s * sizeof (t)))); \
v##t##s test##t##s (t c) \
{ \
  v##t##s v = { C(s) }; \
  return v; \
}

typedef long long llong;

T(char, 64)
T(char, 32)
T(char, 16)
T(char, 8)
T(short, 32)
T(short, 16)
T(short, 8)
T(short, 4)
T(int, 16)
T(int, 8)
T(int, 4)
T(int, 2)
T(float, 16)
T(float, 8)
T(float, 4)
T(float, 2)
T(llong, 8)
T(llong, 4)
T(llong, 2)
T(double, 8)
T(double, 4)
T(double, 2)

Started with r216401, -mavx512f of course doesn't include the avx512bw
broadcast needed for the V64QI or V32HI duplicates.