qemu/tcg/arm
Richard Henderson b9537d5904 tcg/arm: Reduce vector alignment requirement for NEON
With arm32, the ABI gives us 8-byte alignment for the stack.
While it's possible to realign the stack to provide 16-byte alignment,
it's far easier to simply not encode 16-byte alignment in the
VLD1 and VST1 instructions that we emit.

Remove the assertion in temp_allocate_frame, limit natural alignment
to the provided stack alignment, and add a comment.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1999878
Reported-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210912174925.200132-1-richard.henderson@linaro.org>
Message-Id: <20211206191335.230683-2-richard.henderson@linaro.org>
2021-12-07 06:32:09 -08:00
..
tcg-target-con-set.h tcg/arm: Implement TCG_TARGET_HAS_roti_vec 2021-06-04 11:50:11 -07:00
tcg-target-con-str.h tcg/arm: Implement minimal vector operations 2021-06-04 11:50:11 -07:00
tcg-target.c.inc tcg/arm: Reduce vector alignment requirement for NEON 2021-12-07 06:32:09 -08:00
tcg-target.h tcg/arm: Simplify use_armv5t_instructions 2021-09-14 12:00:21 -07:00
tcg-target.opc.h tcg/arm: Implement TCG_TARGET_HAS_roti_vec 2021-06-04 11:50:11 -07:00