[libc] Update supported riscv libs

[mikhail.ramalho]

Summary

This patch updates the list of supported libs according to the latest changes to x86_64

[mikhail.ramalho]

rebased

[sivachandra]

The last time I checked, log10 had failures. Was it fixed with the FMA change?

[mikhail.ramalho]

In D147961#4274137, @sivachandra wrote:

The last time I checked, log10 had failures. Was it fixed with the FMA change?

Do you mean these messages?

[1735/2157] Running unit test libc.test.src.math.log10_test
[ RUN      ] LlvmLibcLog10Test.SpecialNumbers
[       OK ] LlvmLibcLog10Test.SpecialNumbers
[ RUN      ] LlvmLibcLog10Test.TrickyInputs
[       OK ] LlvmLibcLog10Test.TrickyInputs
[ RUN      ] LlvmLibcLog10Test.InDoubleRange
 Test Rounding To Nearest...
 Log10 failed: 0/1234562/1234562 tests.
   Max ULPs is at most: 0.5.
 Test Rounding Downward...
 Log10 failed: 0/1234562/1234562 tests.
   Max ULPs is at most: 0.5.
 Test Rounding Upward...
 Log10 failed: 0/1234562/1234562 tests.
   Max ULPs is at most: 0.5.
 Test Rounding Toward Zero...
 Log10 failed: 0/1234562/1234562 tests.
   Max ULPs is at most: 0.5.
[       OK ] LlvmLibcLog10Test.InDoubleRange
Ran 3 tests.  PASS: 3  FAIL: 0

Both x86_64 and riscv64 print them, and the test doesn't fail.

[sivachandra]

Those print messages are now deleted - if you sync and rebuild/rerun, they should go away. I remember seeing real failures which turned the bot red when it was still connected staging. But, if there are no failures now, go ahead and land.

[sivachandra]

This is the failure the bot is still seeing: https://lab.llvm.org/buildbot/#/builders/256/builds/1030

[mikhail.ramalho]

In D147961#4275174, @sivachandra wrote:

This is the failure the bot is still seeing: https://lab.llvm.org/buildbot/#/builders/256/builds/1030

Yeah, I just got the email... I'll remove the log10 while I try to figure out what's the issue and why I can't reproduce it.

libc/config/linux/riscv64/entrypoints.txt

set(TARGET_LIBC_ENTRYPOINTS
     libc.src.stdlib.realloc
     libc.src.stdlib.aligned_alloc
     libc.src.stdlib.free
 
     # stdio.h entrypoints
     libc.src.stdio.remove
     libc.src.stdio.sprintf
     libc.src.stdio.snprintf
+    libc.src.stdio.fprintf
+    libc.src.stdio.printf
 
     # sys/mman.h entrypoints
     libc.src.sys.mman.madvise
     libc.src.sys.mman.mmap
     libc.src.sys.mman.mprotect
     libc.src.sys.mman.munmap
     libc.src.sys.mman.posix_madvise
 
set(TARGET_LIBC_ENTRYPOINTS
     libc.src.unistd.rmdir
     libc.src.unistd.symlink
     libc.src.unistd.symlinkat
     libc.src.unistd.sysconf
     libc.src.unistd.truncate
     libc.src.unistd.unlink
     libc.src.unistd.unlinkat
     libc.src.unistd.write
+
+    # wchar.h entrypoints
+    libc.src.wchar.wctob
 )
 
 set(TARGET_LIBM_ENTRYPOINTS
     # fenv.h entrypoints
     libc.src.fenv.feclearexcept
     libc.src.fenv.fedisableexcept
     libc.src.fenv.feenableexcept
     libc.src.fenv.fegetenv
set(TARGET_LIBM_ENTRYPOINTS
     libc.src.math.ldexpf
     libc.src.math.ldexpl
     libc.src.math.llrint
     libc.src.math.llrintf
     libc.src.math.llrintl
     libc.src.math.llround
     libc.src.math.llroundf
     libc.src.math.llroundl
+    libc.src.math.log10
     libc.src.math.log10f
     libc.src.math.log1pf
     libc.src.math.log2f
     libc.src.math.logf
     libc.src.math.logb
     libc.src.math.logbf
     libc.src.math.logbl
     libc.src.math.lrint
list(APPEND TARGET_LIBC_ENTRYPOINTS
     libc.src.stdio.fopencookie
     libc.src.stdio.fread
     libc.src.stdio.fread_unlocked
     libc.src.stdio.fseek
     libc.src.stdio.ftell
     libc.src.stdio.funlockfile
     libc.src.stdio.fwrite
     libc.src.stdio.fwrite_unlocked
-    libc.src.stdio.fprintf
     libc.src.stdio.getc
     libc.src.stdio.getc_unlocked
     libc.src.stdio.getchar
     libc.src.stdio.getchar_unlocked
     libc.src.stdio.printf
     libc.src.stdio.sscanf
     libc.src.stdio.scanf
     libc.src.stdio.fscanf

libc/config/linux/riscv64/headers.txt

set(TARGET_PUBLIC_HEADERS
     libc.include.stdio
     libc.include.stdlib
     libc.include.string
     libc.include.strings
     libc.include.termios
     libc.include.threads
     libc.include.time
     libc.include.unistd
+    libc.include.wchar
 
     libc.include.arpa_inet
 
     libc.include.sys_auxv
     libc.include.sys_ioctl
     libc.include.sys_mman
     libc.include.sys_prctl
     libc.include.sys_random