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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2023-07-20 00:11:18 +0200 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-07-23 17:58:19 +0100 |
| commit | 22d2e5351a18aff5a9c7e3984b50ecce61ff8975 (patch) | |
| tree | 46e1fca0b8b066a69b85bae613190e1827091346 /iothread.c | |
| parent | 2c8412d469707124c6f471822aff2e2cab395907 (diff) | |
| download | qemu-22d2e5351a18aff5a9c7e3984b50ecce61ff8975.zip qemu-22d2e5351a18aff5a9c7e3984b50ecce61ff8975.tar.gz qemu-22d2e5351a18aff5a9c7e3984b50ecce61ff8975.tar.bz2 | |
tcg/{i386, s390x}: Add earlyclobber to the op_add2's first output
i386 and s390x implementations of op_add2 require an earlyclobber,
which is currently missing. This breaks VCKSM in s390x guests. E.g., on
x86_64 the following op:
add2_i32 tmp2,tmp3,tmp2,tmp3,tmp3,tmp2 dead: 0 2 3 4 5 pref=none,0xffff
is translated to:
addl %ebx, %r12d
adcl %r12d, %ebx
Introduce a new C_N1_O1_I4 constraint, and make sure that earlyclobber
of aliased outputs is honored.
Cc: qemu-stable@nongnu.org
Fixes: 82790a870992 ("tcg: Add markup for output requires new register")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230719221310.1968845-7-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'iothread.c')
0 files changed, 0 insertions, 0 deletions