[PATCH] D43278: Add Xray instrumentation support to FreeBSD

[Stephen Checkoway via Phabricator via llvm-commits]

stevecheckoway added inline comments.


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Comment at: lib/xray/xray_x86_64.inc:25
+  unsigned long Rax, Rdx;
+  __asm__ __volatile__("rdtscp\n" : "=a"(Rax), "=b"(Rdx), "=c"(LongCPU) ::);
   CPU = LongCPU;
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The constraint on Rdx should be "=d".


https://reviews.llvm.org/D43278