[Bug target/94136] GCC doc for built-in function __builtin___clear_cache() not 100% correct
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94136 palmer at gcc dot gnu.org changed: What|Removed |Added CC||palmer at gcc dot gnu.org --- Comment #4 from palmer at gcc dot gnu.org --- IMO this isn't actually a documentation bug, it's a functionality bug. I've sent a patch, sorry it took a while -- I hadn't seen this one, but just stumbled across Jim's mostly unrelated email and happened to find this bug.
[Bug target/94136] GCC doc for built-in function __builtin___clear_cache() not 100% correct
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94136 Jim Wilson changed: What|Removed |Added CC||wilson at gcc dot gnu.org --- Comment #3 from Jim Wilson --- Another possible issue is that __clear_cache is defined in the libgcc docs. But only some platforms are defining CLEAR_INSN_CACHE so only some targets have a usable __clear_cache function.
[Bug target/94136] GCC doc for built-in function __builtin___clear_cache() not 100% correct
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94136 Andrew Waterman changed: What|Removed |Added CC||andrew at sifive dot com --- Comment #2 from Andrew Waterman --- The problematic sentence in the docs is "Otherwise either instructions are emitted in-line to clear the instruction cache or a call to the __clear_cache function in libgcc is made." The problem is that the RISC-V port emits a call to a function, but that function isn't named "__clear_cache." RISC-V is not unique in this respect, though: the MIPS port uses a variety of function names that can be overridden on the command line. My recommendation is to replace the problematic sentence something like: "Otherwise, a target-dependent code sequence effects the requested instruction-stream synchronization operation. On some targets, this sequence invokes the __clear_cache function in libgcc." This formulation maintains the sentiment of the original, while admitting the RISC-V and MIPS behavior.
[Bug target/94136] GCC doc for built-in function __builtin___clear_cache() not 100% correct
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94136 Richard Biener changed: What|Removed |Added Status|UNCONFIRMED |NEW Keywords||documentation Component|other |target Target||riscv Last reconfirmed||2020-03-11 Ever confirmed|0 |1 --- Comment #1 from Richard Biener --- Confirmed.
