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22d2e5351a
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:
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.. | ||
tcg-target-con-set.h | ||
tcg-target-con-str.h | ||
tcg-target-reg-bits.h | ||
tcg-target.c.inc | ||
tcg-target.h | ||
tcg-target.opc.h |