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@@ -6847,7 +6847,7 @@ end:
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// 2nd pass: some analysis
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lowest_literal = end_literals = lowest_mova = 0;
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- t = T_UNKNOWN;
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+ t = T_UNKNOWN; // T flag state
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last_btarget = 0;
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op = 0; // delay/poll insns counter
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is_divop = 0; // divide op insns counter
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@@ -6857,7 +6857,7 @@ end:
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crc += FETCH_OP(pc);
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// propagate T (TODO: DIV0U)
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- if ((op_flags[i] & OF_BTARGET) || (opd->dest & BITMASK1(SHR_T)))
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+ if (op_flags[i] & OF_BTARGET)
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t = T_UNKNOWN;
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if ((opd->op == OP_BRANCH_CT && t == T_SET) ||
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@@ -6867,10 +6867,12 @@ end:
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} else if ((opd->op == OP_BRANCH_CT && t == T_CLEAR) ||
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(opd->op == OP_BRANCH_CF && t == T_SET))
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opd->op = OP_BRANCH_N;
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- else if ((opd->op == OP_SETCLRT && !opd->imm) || opd->op == OP_BRANCH_CT)
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- t = T_CLEAR;
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- else if ((opd->op == OP_SETCLRT && opd->imm) || opd->op == OP_BRANCH_CF)
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- t = T_SET;
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+ else if (OP_ISBRACND(opd->op))
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+ t = (opd->op == OP_BRANCH_CF ? T_SET : T_CLEAR);
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+ else if (opd->op == OP_SETCLRT)
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+ t = (opd->imm ? T_SET : T_CLEAR);
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+ else if (opd->dest & BITMASK1(SHR_T))
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+ t = T_UNKNOWN;
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// "overscan" detection: unreachable code after unconditional branch
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// this can happen if the insn after a forward branch isn't a local target
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