[PATCH 0/4] tcg: Fix for Bug 1863508

[Richard Henderson]

The comment in tcg-runtime-gvec.c about CONFIG_VECTOR16 says that
tcg-op-gvec.c has eliminated size 8 vectors, and only passes on
multiples of 16.  This may have been true of the first few operations,
but is not true of all operations.
    
In particular, multiply, shift by scalar, and compare of 8- and 16-bit
elements are not expanded inline if host vector operations are not
supported.
    
For an x86_64 host that does not support AVX, this means that we will
fall back to the helper, which will attempt to use SSE instructions,
which will SEGV on an invalid 8-byte aligned memory operation.
    
The first patch removes the CONFIG_VECTOR16 code and configuration;
the subsequent patches tidy up tcg-runtime-gvec.c.


r~


Richard Henderson (4):
  tcg: Remove CONFIG_VECTOR16
  tcg: Tidy tcg-runtime-gvec.c types
  tcg: Tidy tcg-runtime-gvec.c DUP*
  tcg: Remove tcg-runtime-gvec.c DO_CMP0

 configure                    |  56 -------
 accel/tcg/tcg-runtime-gvec.c | 298 ++++++++++++++---------------------
 2 files changed, 116 insertions(+), 238 deletions(-)

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2.20.1