qemu/tcg/s390x/tcg-target-con-set.h
Richard Henderson 50695fb83e tcg/s390x: Optimize cmpsel with constant 0/-1 arguments
These can be simplified to and/or/andc/orc,
avoiding the load of the constantinto a register.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22 06:54:50 +02:00

51 lines
1.1 KiB
C

/* SPDX-License-Identifier: MIT */
/*
* Define S390 target-specific constraint sets.
* Copyright (c) 2021 Linaro
*/
/*
* C_On_Im(...) defines a constraint set with <n> outputs and <m> inputs.
* Each operand should be a sequence of constraint letters as defined by
* tcg-target-con-str.h; the constraint combination is inclusive or.
*
* C_Nn_Om_Ik(...) defines a constraint set with <n + m> outputs and <k>
* inputs, except that the first <n> outputs must use new registers.
*/
C_O0_I1(r)
C_O0_I2(r, r)
C_O0_I2(r, ri)
C_O0_I2(r, rC)
C_O0_I2(v, r)
C_O0_I3(o, m, r)
C_O1_I1(r, r)
C_O1_I1(v, r)
C_O1_I1(v, v)
C_O1_I1(v, vr)
C_O1_I2(r, 0, ri)
C_O1_I2(r, 0, rI)
C_O1_I2(r, 0, rJ)
C_O1_I2(r, r, r)
C_O1_I2(r, r, ri)
C_O1_I2(r, r, rC)
C_O1_I2(r, r, rI)
C_O1_I2(r, r, rJ)
C_O1_I2(r, r, rK)
C_O1_I2(r, r, rKR)
C_O1_I2(r, r, rNK)
C_O1_I2(r, r, rNKR)
C_O1_I2(r, rZ, r)
C_O1_I2(v, v, r)
C_O1_I2(v, v, v)
C_O1_I3(v, v, v, v)
C_O1_I4(v, v, v, vZ, v)
C_O1_I4(v, v, v, vZM, v)
C_O1_I4(r, r, ri, rI, r)
C_O1_I4(r, r, rC, rI, r)
C_O2_I1(o, m, r)
C_O2_I2(o, m, 0, r)
C_O2_I2(o, m, r, r)
C_O2_I3(o, m, 0, 1, r)
C_N1_O1_I4(r, r, 0, 1, ri, r)
C_N1_O1_I4(r, r, 0, 1, rJU, r)