compiler_rt changes for RISC-V

[emaste]

contrib/compiler-rt/lib/builtins/int_lib.h

77–81

The comment doesn't match the #if condition now.

Presumably it's any version of GCC, and targeting an arch that does not have dedicated bit counting instructions. We'll also need to push this upstream.

contrib/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h

80–81

Do you know if these values will apply on Linux as well?

contrib/compiler-rt/lib/sanitizer_common/sanitizer_posix.cc

98

RISC-V comment?

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contrib/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h

80–81

They actually do that:

const unsigned struct_kernel_stat_sz = 128;
const unsigned struct_kernel_stat64_sz = 128;

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synced with Linux

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context added

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extra change removed

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Mark TODO