| Message ID | 20231020071506.27021-1-chenglulu@loongson.cn |
|---|---|
| State | New |
| Headers | show |
| Series | LoongArch: Define macro CLEAR_INSN_CACHE. | expand |
Pushed to r14-4836. 在 2023/10/20 下午3:15, Lulu Cheng 写道: > LoongArch's microstructure ensures cache consistency by hardware. > Due to out-of-order execution, ibar is required to ensure the visibility of the > store (invalidated icache) executed by this CPU before ibar (to the instance). > ibar will not invalidate the icache, so the start and end parameters are not Affect > ibar performance. > > gcc/ChangeLog: > > * config/loongarch/loongarch.h (CLEAR_INSN_CACHE): New definition. > --- > gcc/config/loongarch/loongarch.h | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/gcc/config/loongarch/loongarch.h b/gcc/config/loongarch/loongarch.h > index 22912018a0d..0c15c79bc4c 100644 > --- a/gcc/config/loongarch/loongarch.h > +++ b/gcc/config/loongarch/loongarch.h > @@ -1239,3 +1239,6 @@ struct GTY (()) machine_function > > #define TARGET_EXPLICIT_RELOCS \ > (la_opt_explicit_relocs == EXPLICIT_RELOCS_ALWAYS) > + > +#undef CLEAR_INSN_CACHE > +#define CLEAR_INSN_CACHE(beg, end) __builtin_loongarch_ibar (0)
diff --git a/gcc/config/loongarch/loongarch.h b/gcc/config/loongarch/loongarch.h index 22912018a0d..0c15c79bc4c 100644 --- a/gcc/config/loongarch/loongarch.h +++ b/gcc/config/loongarch/loongarch.h @@ -1239,3 +1239,6 @@ struct GTY (()) machine_function #define TARGET_EXPLICIT_RELOCS \ (la_opt_explicit_relocs == EXPLICIT_RELOCS_ALWAYS) + +#undef CLEAR_INSN_CACHE +#define CLEAR_INSN_CACHE(beg, end) __builtin_loongarch_ibar (0)