ATI R700 Technology
9-8 Control Flow (CF) Instructions
Copyright © 2009 Advanced Micro Devices, Inc. All rights reserved.
Initiate ALU Clause, Stack Push Before
Instructions
ALU_PUSH_BEFORE
Description Initiates an ALU clause. If the clause issues PRED_SET* instructions, the first PRED_SET*
instruction causes a stack push and an update of the hardware-maintained active execution
state. Subsequent PRED_SET* instructions only update the execution state.
The ALU instructions within an ALU clause are described in Section Chapter 4, “ALU
Clauses,” page 4-1 and Section 9.2, “ALU Instructions,” page 9-42.
Microcode
Format CF_ALU_DWORD0 (page 10-7) and CF_ALU_DWORD1 (page 10-8).
Instruction Field CF_INST == CF_INST_ALU_PUSH_BEFORE, opcode 9 (0x9).
B
W
Q
M
CF_INST
A
C
COUNT KCACHE_ADDR1 KCACHE_ADDR0 KM1 +4
KM0 KB1 KB0 ADDR +0
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