tcg: Reduce serial context atomicity earlier

Reduce atomicity while emitting opcodes, instead of later
during code generation.  This ensures that any helper called
also sees the reduced atomicity requirement.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2034
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231212193542.149117-1-richard.henderson@linaro.org>
2 files changed