On Wed, 11 Oct 2023 17:57:27 GMT, Vladimir Ivanov <vliva...@openjdk.org> wrote:
>> Andrew Haley has updated the pull request incrementally with one additional >> commit since the last revision: >> >> Add TestDenormalDouble.java > > src/hotspot/os/bsd/os_bsd.cpp line 977: > >> 975: >> 976: void *os::Bsd::dlopen_helper(const char *filename, int mode) { >> 977: #if defined(__GNUC__) > > What's the intention of limiting it to GCC on BSD? `os_linux.cpp` doesn't > have it. > > Also, since 3rd party libraries are the root of the problem, does the > information about toolchain JDK is built with help in any way? Good point. I think the reason it's GCC-conditional is that a previous version used GCC extensions. I'll take it out. > src/hotspot/os/bsd/os_bsd.cpp line 1001: > >> 999: static const volatile double thresh >> 1000: = jdouble_cast(0x0000000000000003); // 0x0.0000000000003p-1022; >> 1001: if (unity + thresh == unity || -unity - thresh == -unity) { > > The check is duplicated in 4 places (twice in os_bsd.cpp and twice in > os_linux.cpp). Maybe extract it into some central shared location? Also, > unity and thresh constants are duplicated in `stubGenerator_x86_64.cpp`. Why > don't you place everything on `StubRoutines` instead? OK. > test/hotspot/jtreg/compiler/floatingpoint/libfast-math.c line 39: > >> 37: static void __attribute__((constructor)) set_flush_to_zero(void) { >> 38: >> 39: #if defined(__x86_64__) && defined(SSE) > > x86-64 implies SSE2, doesn't it? I can't remember. I'll take it out. > test/hotspot/jtreg/compiler/floatingpoint/libfast-math.c line 51: > >> 49: { __asm__ __volatile__ ("msr fpcr, %0" : : "r" (fpcr)); } >> 50: /* Flush to zero, round to nearest, IEEE exceptions disabled. */ >> 51: _FPU_SETCW (_FPU_FPCR_FZ); > > Macros make it a bit harder to decipher what happens there. At least, I'd > suggest to change formatting around `_FPU_SETCW`. At first glance, it looks > like it is part of the macro definition. OK, I see. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/10661#discussion_r1356948049 PR Review Comment: https://git.openjdk.org/jdk/pull/10661#discussion_r1356921508 PR Review Comment: https://git.openjdk.org/jdk/pull/10661#discussion_r1356919522 PR Review Comment: https://git.openjdk.org/jdk/pull/10661#discussion_r1356953789