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H A D | configure | 74912f6dad207bfdd5bfa8c6012c364ea9405fc7 Wed Mar 28 08:31:52 CDT 2018 Laurent Vivier <lvivier@redhat.com> tcg: fix 16-byte vector operations detection
configure tries to detect if the compiler supports 16-byte vector operations.
As stated in the comment of the detection program, there is a problem with the system compiler on GCC on Centos 7.
This program doesn't actually detect the problem with GCC on RHEL7 on PPC64LE (Red Hat 4.8.5-28).
This patch updates the test to look more like it is in QEMU helpers, and now detects the problem.
The error reported is:
CC ppc64-softmmu/accel/tcg/tcg-runtime-gvec.o ..//accel/tcg/tcg-runtime-gvec.c: In function ‘helper_gvec_shl8i’: ../accel/tcg/tcg-runtime-gvec.c:558:26: internal compiler error: in emit_move_insn, at expr.c:3495 *(vec8 *)(d + i) = *(vec8 *)(a + i) << shift; ^ Fixes: db43267 "tcg: Add generic vector expanders" Signed-off-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: Miroslav Rezanina <mrezanin@redhat.com> Message-id: 20180328133152.24623-1-lvivier@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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