[compiler-rt] [compiler-rt] Add cpu model init for Windows. (PR #111961)

[Martin Storsjö via llvm-commits]

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@@ -31,7 +31,15 @@
 // We're choosing init priority 90 to force our constructors to run before any
 // constructors in the end user application (starting at priority 101). This
 // value matches the libgcc choice for the same functions.
-#define CONSTRUCTOR_ATTRIBUTE __attribute__((constructor(90)))
+#ifdef _WIN64
+// Contructor that replaces the ifunc runs currently with prio 10, see
+// the LowerIFuncPass. The resolver of FMV depends on the cpu features so set
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mstorsjo wrote:

I wondered what this was about, if it was some feature in the compiler I was unaware of - but then I saw the other PR filed at the same time :-)

https://github.com/llvm/llvm-project/pull/111961