[clang] [clang][PowerPC] Enable IEEE-128 long double on FreeBSD/powerpc64le (PR #201298)

[Jessica Clarke via cfe-commits]

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@@ -457,7 +457,12 @@ class LLVM_LIBRARY_VISIBILITY PPC64TargetInfo : public PPCTargetInfo {
       ABI = "elfv1";
     }
 
-    if (Triple.isOSFreeBSD() || Triple.isOSOpenBSD() || Triple.isMusl()) {
+    if (Triple.isOSFreeBSD() && Triple.getArch() == llvm::Triple::ppc64le &&
+        (Triple.getOSMajorVersion() >= 16 || Triple.getOSVersion().empty())) {
+      LongDoubleWidth = LongDoubleAlign = 128;
+      LongDoubleFormat = &llvm::APFloat::IEEEquad();
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jrtc27 wrote:

Do we actually need to explicitly set them here or can we just leave them as their default value and let defaultToIEEELongDouble do the right thing?

https://github.com/llvm/llvm-project/pull/201298