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Here are two examples that cause an internal error in Asmexpand.ml:
volatile long long x; void f(unsigned int i) { x = i; }
unsigned g(unsigned i) { return __builtin_clzll(i); }
The argument "i" to builtin volatile store or __builtin_clzll is turned into a BA_splitlong(BA_int 0, BA <variable i>), which Asmexpand.ml doesn't know how to handle.
The fix (in AST.builtin_arg_ok) is to prevent this 'optimization' for all builtins except those of the "OK_all" kind, i.e. __builtin_annot.
Regression tests were added and tested on IA32. Need to retest on ARM and PowerPC.
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1- new register allocator (+ live range splitting, spilling&reloading, etc)
based on a posteriori validation using the Rideau-Leroy algorithm
2- support for 64-bit integer arithmetic (type "long long").
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2200 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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ARM: add support for builtin_volatile_{read,write}_global, after all.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2127 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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test/regression: int main() so that interpretation works
Revised once more implementation of __builtin_memcpy (to check for PPC & ARM)
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1688 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1297 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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