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Rollup merge of #39350 - nagisa:i128-test-helpers-better-def, r=alexcrichton

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Use __SIZEOF_INT128__ to test __int128 presence

Previously we tested whether a handful of preprocessor variables indicating certain 64 bit
platforms, but this does not work for other 64 bit targets which have support for __int128 in C
compiler.

Use the `__SIZEOF__INT128__` preprocessor variable instead. This variable gets set to 16 by gcc and
clang for every target where __int128 is supported.
This commit is contained in:
Alex Crichton 2017-01-27 14:41:30 -08:00
commit 9eb00687ac
1 changed files with 1 additions and 1 deletions
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src/rt/rust_test_helpers.c
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@ -269,7 +269,7 @@ LARGE_INTEGER increment_all_parts(LARGE_INTEGER li) {
return li;
}
#if !(defined(WIN32) || defined(_WIN32) || defined(__WIN32)) && defined(__amd64__)
#if __SIZEOF_INT128__ == 16
unsigned __int128 identity(unsigned __int128 a) {
return a;