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Hi, I've been seeing a crash in llvm_gcda_emit_arcs() on x86_64. The crash occurs executing a movdqa instruction with an unaligned src address. The attached patch to the compiler-rt project fixes the problem by using memcpy() to read data from the write_buffer[] in GCDAProfiling.c. This is my first patch submission to llvm so please let me know if I've missed any steps. I'm not on