59       Instruction* branch = pred.instructions.back().get();  in try_remove_simple_block()  local
60       if (branch->opcode == aco_opcode::p_branch) {  in try_remove_simple_block()
69          branch->opcode = aco_opcode::p_branch;  in try_remove_simple_block()
95          /* Invert the condition. This branch now falls through to its original target.  in try_remove_simple_block()
99          if (branch->opcode == aco_opcode::p_cbranch_nz)  in try_remove_simple_block()
100             branch->opcode = aco_opcode::p_cbranch_z;  in try_remove_simple_block()
102             branch->opcode = aco_opcode::p_cbranch_nz;  in try_remove_simple_block()
105       /* Update the branch target. */  in try_remove_simple_block()
106       branch->branch().target[0] = succ_idx;  in try_remove_simple_block()
170    Instruction* branch = block.instructions.back().get();  in try_merge_break_with_continue()  local
171    if (branch->opcode != aco_opcode::s_cbranch_scc0)  in try_merge_break_with_continue()
187       /* The branch needs to be exec zero only, otherwise we corrupt exec. */  in try_merge_break_with_continue()
193    /* merge block: copy to exec, branch */  in try_merge_break_with_continue()
209    /* Use conditional branch in merge block. */  in try_merge_break_with_continue()
219     * Otherwise, we'll need an extra branch instruction.  in try_merge_break_with_continue()
223          branch->opcode = aco_opcode::s_branch;  in try_merge_break_with_continue()
276           * used by a later branch.  in eliminate_useless_exec_writes_in_block()
304  *  Check if the branch instruction can be removed:
306  *  is faster than the branch instruction itself.
310  *  - The compiler stack knows that it's a divergent branch never taken
313 can_remove_branch(branch_ctx& ctx, Block& block, Pseudo_branch_instruction* branch)  in can_remove_branch()  argument
315    const uint32_t target = branch->target[0];  in can_remove_branch()
317       !((branch->opcode == aco_opcode::p_cbranch_z || branch->opcode == aco_opcode::p_cbranch_nz) &&  in can_remove_branch()
318         branch->operands[0].physReg() == exec);  in can_remove_branch()
320    if (branch->never_taken) {  in can_remove_branch()
331    const bool prefer_remove = branch->rarely_taken;  in can_remove_branch()
335    /* Check the instructions between branch and target */  in can_remove_branch()
389             /* Under these conditions, we shouldn't remove the branch.  in can_remove_branch()
413    aco_ptr<Instruction> branch = std::move(block.instructions.back());  in lower_branch_instruction()  local
414    const uint32_t target = branch->branch().target[0];  in lower_branch_instruction()
417    if (can_remove_branch(ctx, block, &branch->branch())) {  in lower_branch_instruction()
418       if (branch->opcode != aco_opcode::p_branch)  in lower_branch_instruction()
423    /* emit branch instruction */  in lower_branch_instruction()
425    switch (branch->opcode) {  in lower_branch_instruction()
432       if (branch->operands[0].physReg() == exec)  in lower_branch_instruction()
434       else if (branch->operands[0].physReg() == vcc)  in lower_branch_instruction()
437          assert(branch->operands[0].physReg() == scc);  in lower_branch_instruction()
443       if (branch->operands[0].physReg() == exec)  in lower_branch_instruction()
445       else if (branch->operands[0].physReg() == vcc)  in lower_branch_instruction()
448          assert(branch->operands[0].physReg() == scc);  in lower_branch_instruction()
452    default: unreachable("Unknown Pseudo branch instruction!");  in lower_branch_instruction()
500              instr_info.classes[(int)p.instructions.back()->opcode] == instr_class::branch &&  in try_stitch_linear_block()