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authorRichard Henderson <rth@twiddle.net>2014-04-25 15:19:33 -0400
committerRichard Henderson <rth@twiddle.net>2014-05-12 11:13:13 -0700
commit96d0ee7f0950e725ef7a4f7516e0af6a08d303e0 (patch)
tree9fdb8dd5cdaccf7d86ebdfafb69c90a5dd146ead /tcg/sparc
parentaf3cbfbe8018ccc16fb3a0048e928f66f0d05e87 (diff)
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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/sparc')
-rw-r--r--tcg/sparc/tcg-target.c21
1 files changed, 3 insertions, 18 deletions
diff --git a/tcg/sparc/tcg-target.c b/tcg/sparc/tcg-target.c
index 4f8de1e..17ff577 100644
--- a/tcg/sparc/tcg-target.c
+++ b/tcg/sparc/tcg-target.c
@@ -1167,15 +1167,6 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
tcg_out_nop(s);
s->tb_next_offset[a0] = tcg_current_code_size(s);
break;
- case INDEX_op_call:
- if (const_args[0]) {
- tcg_out_call(s, (void *)(uintptr_t)a0);
- } else {
- tcg_out_arithi(s, TCG_REG_O7, a0, 0, JMPL);
- /* delay slot */
- tcg_out_nop(s);
- }
- break;
case INDEX_op_br:
tcg_out_bpcc(s, COND_A, BPCC_PT, a0);
tcg_out_nop(s);
@@ -1369,13 +1360,12 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
tcg_out_arithc(s, a0, TCG_REG_G0, a1, const_args[1], c);
break;
+ case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */
case INDEX_op_mov_i64:
- case INDEX_op_mov_i32:
+ case INDEX_op_movi_i32: /* Always emitted via tcg_out_movi. */
case INDEX_op_movi_i64:
- case INDEX_op_movi_i32:
- /* Always implemented with tcg_out_mov/i, never with tcg_out_op. */
+ case INDEX_op_call: /* Always emitted via tcg_out_call. */
default:
- /* Opcode not implemented. */
tcg_abort();
}
}
@@ -1383,11 +1373,8 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
static const TCGTargetOpDef sparc_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" } },
@@ -1424,8 +1411,6 @@ static const TCGTargetOpDef sparc_op_defs[] = {
{ INDEX_op_mulu2_i32, { "r", "r", "rZ", "rJ" } },
{ INDEX_op_muls2_i32, { "r", "r", "rZ", "rJ" } },
- { INDEX_op_mov_i64, { "R", "R" } },
- { INDEX_op_movi_i64, { "R" } },
{ INDEX_op_ld8u_i64, { "R", "r" } },
{ INDEX_op_ld8s_i64, { "R", "r" } },
{ INDEX_op_ld16u_i64, { "R", "r" } },