被称为英特尔体系结构代码分析仪，IACA是用于评估针对Intel CPU的代码调度的高级工具。它以三种模式运行：

吞吐量模式：

IACA traces the sequence of instructions as they progress through pipelines.
Capabilities and Applications:
Estimates scheduling for modern Intel CPUs (ranging from Nehalem to Broadwell, depending on the version).
• Reports in detailed ASCII or interactive Graphviz charts.
Supports C, C , and x86 assembly analysis.

Usage:

• Instructions for IACA usage vary depending on your programming language.
• C/C ：
• 包括必要的IACA标头（IACAMARKS.H），然后在目标循环周围放置启动和结尾标记：
zingbly（x86）：

输出解释：输出报告提供了有关目标代码的调度和瓶颈的详细信息。例如，请考虑以下汇编片段：

。l2： vmovaps ymm1，[rdi rax]; l2 vfmadd231ps ymm1，ymm2，[rsi rax]; l2 vmovaps [rdx rax]，ymm1; S1 添加RAX，32;添加 jne .l2; jmp

吞吐量分析报告 ------------------------------------ 块吞吐量：1.55循环吞吐量瓶颈：前端，port2_agu，port3_agu [港口压力故障] | 操作说明 ------------------------------------------------------------------------------ | | vmovaps ymm1，ymmword ptr [rdi rax*1] | 0.5 cp | | 1.5 cp | vfmadd231ps ymm1，ymm2，ymmword ptr [rsi rax*1] | 1.5 cp | vmovaps ymmword ptr [rdx rax*1]，ymm1 | 1 cp | 添加RAX，0x20 | 0 CP | jnz 0xffffffffffffffffffffec 从此输出中，IACA将Haswell Frontend和Port 2和3的Agu标识为瓶颈。 It suggests that optimizing the store instruction to be processed by Port 7 could improve performance.

Limitations:

/* C or C   Usage */

while(cond){
    IACA_START
    /* Innermost Loop Body */
    /* ... */
}
IACA_END

It does not support certain instructions, which are ignored in analysis.

It is compatible with CPUs from Nehalem向后，不包括较旧的型号。