User’s Manual
IBM PowerPC 750GX and 750GL RISC Microprocessor
gx_06.fm.(1.2)
March 27, 2006
Instruction Timing
Page 247 of 377
Store Word with Update
Indexed
stwux 31 183 LSU 2:1 —
Store Word Indexed stwx 31 151 LSU 2:1 —
TLB Invalidate Entry tlbie 31 306 LSU 3:4
1
Execution
Table 6-9. Load-and-Store Instructions (Page 4 of 4)
Instruction Mnemonic
Primary
Opcode
Extended
Opcode
Unit Cycles Serialization
1. For cache operations, the first number indicates the latency in finishing a single instruction; the second indicates the throughput for
back-to-back cache operations. Throughput might be larger than the initial latency, as more cycles might be needed to complete
the instruction to the cache, which stays busy keeping subsequent cache operations from executing.
2. The throughput number of six cycles for dcbz assumes it is to nonglobal (M = 0) address space. For global address space,
throughput is at least 11 cycles.
3. Load/store multiple/string instruction cycles are represented as a fixed number of cycles plus a variable number of cycles, where n
is the number of words accessed by the instruction.
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