Refine proposal

Author: BeMg

riscv-c-api.md

@@ -402,15 +402,15 @@ enum {
 
 ### Prefetch Intrinsics
 
-The zicbop extension provide the prefetch instruction to allow users to optimize data access patterns by providing hints to the hardware regarding future data accesses. It is supported through a compiler-defined built-in function with three arguments that specify its behavior.
+The Zicbop extension provide the prefetch instruction to allow users to optimize data access patterns by providing hints to the hardware regarding future data accesses. It is supported through a compiler-defined built-in function with three arguments that specify its behavior.
 
 ```
 void __builtin_prefetch(const void *addr, int rw, int locality)
 ```
 
-The locality for the built-in __builtin_prefetch function in RISC-V can be achieved using the Non-Temporal Locality Hints (NTLH) extension. According to Non-Temporal Locality Hints extension, it indicates that a cache line should be prefetched into a cache that is outer from the level specified by the NTL when a NTL instruction is applied to prefetch instruction.
+The locality for the built-in `__builtin_prefetch` function in RISC-V can be achieved using the Non-Temporal Locality Hints (Zihintntl) extension. According to Non-Temporal Locality Hints extension, it indicates that a cache line should be prefetched into a cache that is outer from the level specified by the NTL when a NTL instruction is applied to prefetch instruction.
 
-The following table presents the mapping from the __builtin_prefetch function to the corresponding assembly instructions using the NTL extension.
+The following table presents the mapping from the `__builtin_prefetch` function to the corresponding assembly instructions assuming the presence of the Zihintntl and Zicbop extensions.
 
 | Prefetch function                               | Assembly                     | 
 | ----------------------------------------------- | ---------------------------- | 
@@ -419,8 +419,6 @@ The following table presents the mapping from the __builtin_prefetch function to
 | `__builtin_prefetch(ptr, 0, 2 /* locality */);` | `ntl.p1 + prefetch.r (ptr)`  |
 | `__builtin_prefetch(ptr, 0, 3 /* locality */);` | `prefetch.r (ptr)`           |
 
-Compiler only emits the ntlh hints if the Zihintntl extension is enabled.
-
 ### Scalar Bit Manipulation Extension Intrinsics
 
 In order to access the RISC-V scalar bit manipulation intrinsics, it is