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tcg: Drop union from TCGArgConstraint

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The union is unused; let "regs" appear in the main structure
without the "u.regs" wrapping.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-09-03 15:19:03 -07:00
parent e2e7168a21
commit 9be0d08019
11 changed files with 91 additions and 93 deletions
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26
tcg/arm/tcg-target.c.inc
View file

@ -254,40 +254,40 @@ static const char *target_parse_constraint(TCGArgConstraint *ct,
case 'r':
ct->ct |= TCG_CT_REG;
ct->u.regs = 0xffff;
ct->regs = 0xffff;
break;
/* qemu_ld address */
case 'l':
ct->ct |= TCG_CT_REG;
ct->u.regs = 0xffff;
ct->regs = 0xffff;
#ifdef CONFIG_SOFTMMU
/* r0-r2,lr will be overwritten when reading the tlb entry,
so don't use these. */
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R2);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R14);
tcg_regset_reset_reg(ct->regs, TCG_REG_R0);
tcg_regset_reset_reg(ct->regs, TCG_REG_R1);
tcg_regset_reset_reg(ct->regs, TCG_REG_R2);
tcg_regset_reset_reg(ct->regs, TCG_REG_R3);
tcg_regset_reset_reg(ct->regs, TCG_REG_R14);
#endif
break;
/* qemu_st address & data */
case 's':
ct->ct |= TCG_CT_REG;
ct->u.regs = 0xffff;
ct->regs = 0xffff;
/* r0-r2 will be overwritten when reading the tlb entry (softmmu only)
and r0-r1 doing the byte swapping, so don't use these. */
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R0);
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R1);
tcg_regset_reset_reg(ct->regs, TCG_REG_R0);
tcg_regset_reset_reg(ct->regs, TCG_REG_R1);
#if defined(CONFIG_SOFTMMU)
/* Avoid clashes with registers being used for helper args */
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R2);
tcg_regset_reset_reg(ct->regs, TCG_REG_R2);
#if TARGET_LONG_BITS == 64
/* Avoid clashes with registers being used for helper args */
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R3);
tcg_regset_reset_reg(ct->regs, TCG_REG_R3);
#endif
tcg_regset_reset_reg(ct->u.regs, TCG_REG_R14);
tcg_regset_reset_reg(ct->regs, TCG_REG_R14);
#endif
break;