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If we can shift by an immediate, do it. Otherwise, don't.

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Matthew Barr
2017-05-16 11:05:53 +10:00
parent 0275869b3e
commit 3e345c2567
4 changed files with 92 additions and 6 deletions
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1
CMakeLists.txt
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@@ -313,6 +313,7 @@ endif ()
# testing a builtin takes a little more work
CHECK_C_SOURCE_COMPILES("void *aa_test(void *x) { return __builtin_assume_aligned(x, 16);}\nint main(void) { return 0; }" HAVE_CC_BUILTIN_ASSUME_ALIGNED)
CHECK_CXX_SOURCE_COMPILES("void *aa_test(void *x) { return __builtin_assume_aligned(x, 16);}\nint main(void) { return 0; }" HAVE_CXX_BUILTIN_ASSUME_ALIGNED)
CHECK_C_SOURCE_COMPILES("int main(void) { __builtin_constant_p(0); }" HAVE__BUILTIN_CONSTANT_P)
if (NOT WIN32)
set(C_FLAGS_TO_CHECK