[clang] [clang][ARM][AArch64] Define intrinsics guarded by __has_builtin on all platforms (PR #128222)

[Artem Belevich via cfe-commits]

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@@ -36,6 +36,28 @@ typedef __SIZE_TYPE__ size_t;
 
 #include <intrin.h>
 
+#ifdef __ARM_ACLE
+// arm_acle.h needs some stdint types, but -ffreestanding prevents us from
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Artem-B wrote:

Shouldn't that be fixed in arm_acle.h itself so it includes the headers with the types it needs?

https://github.com/llvm/llvm-project/pull/128222