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| author | Richard Henderson <rth@twiddle.net> | 2014-04-25 15:19:33 -0400 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2014-05-12 11:13:13 -0700 |
| commit | 96d0ee7f0950e725ef7a4f7516e0af6a08d303e0 (patch) | |
| tree | 9fdb8dd5cdaccf7d86ebdfafb69c90a5dd146ead /tcg/arm/tcg-target.c | |
| parent | af3cbfbe8018ccc16fb3a0048e928f66f0d05e87 (diff) | |
| download | focaccia-qemu-96d0ee7f0950e725ef7a4f7516e0af6a08d303e0.tar.gz focaccia-qemu-96d0ee7f0950e725ef7a4f7516e0af6a08d303e0.zip | |
tcg: Remove unreachable code in tcg_out_op and op_defs
The INDEX_op_call case has just been obsoleted; the mov and movi cases have not been reachable for years. Attempt to document this both in each tcg_out_op switch, and via TCG_OPF_NOT_PRESENT. Because of the TCG_OPF_NOT_PRESENT change, this must be done for all targets in a single commit. Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg/arm/tcg-target.c')
| -rw-r--r-- | tcg/arm/tcg-target.c | 32 |
1 files changed, 3 insertions, 29 deletions
diff --git a/tcg/arm/tcg-target.c b/tcg/arm/tcg-target.c index 5236a33a89..538ca2aed0 100644 --- a/tcg/arm/tcg-target.c +++ b/tcg/arm/tcg-target.c @@ -1038,17 +1038,6 @@ static void tcg_out_call(TCGContext *s, tcg_insn_unit *addr) } } -static inline void tcg_out_callr(TCGContext *s, int cond, int arg) -{ - if (use_armv5t_instructions) { - tcg_out_blx(s, cond, arg); - } else { - tcg_out_dat_reg(s, cond, ARITH_MOV, TCG_REG_R14, 0, - TCG_REG_PC, SHIFT_IMM_LSL(0)); - tcg_out_bx(s, cond, arg); - } -} - static inline void tcg_out_goto_label(TCGContext *s, int cond, int label_index) { TCGLabel *l = &s->labels[label_index]; @@ -1667,13 +1656,6 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, } s->tb_next_offset[args[0]] = tcg_current_code_size(s); break; - case INDEX_op_call: - if (const_args[0]) { - tcg_out_call(s, (void *)args[0]); - } else { - tcg_out_callr(s, COND_AL, args[0]); - } - break; case INDEX_op_br: tcg_out_goto_label(s, COND_AL, args[0]); break; @@ -1703,13 +1685,6 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, tcg_out_st32(s, COND_AL, args[0], args[1], args[2]); break; - case INDEX_op_mov_i32: - tcg_out_dat_reg(s, COND_AL, ARITH_MOV, - args[0], 0, args[1], SHIFT_IMM_LSL(0)); - break; - case INDEX_op_movi_i32: - tcg_out_movi32(s, COND_AL, args[0], args[1]); - break; case INDEX_op_movcond_i32: /* Constraints mean that v2 is always in the same register as dest, * so we only need to do "if condition passed, move v1 to dest". @@ -1925,6 +1900,9 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, tcg_out_udiv(s, COND_AL, args[0], args[1], args[2]); break; + case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */ + case INDEX_op_movi_i32: /* Always emitted via tcg_out_movi. */ + case INDEX_op_call: /* Always emitted via tcg_out_call. */ default: tcg_abort(); } @@ -1933,12 +1911,8 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc, static const TCGTargetOpDef arm_op_defs[] = { { INDEX_op_exit_tb, { } }, { INDEX_op_goto_tb, { } }, - { INDEX_op_call, { "ri" } }, { INDEX_op_br, { } }, - { INDEX_op_mov_i32, { "r", "r" } }, - { INDEX_op_movi_i32, { "r" } }, - { INDEX_op_ld8u_i32, { "r", "r" } }, { INDEX_op_ld8s_i32, { "r", "r" } }, { INDEX_op_ld16u_i32, { "r", "r" } }, |