[llvm] [AArch64] Consider runtime mode when deciding to use SVE for fixed-length vectors. (PR #96081)

[Sander de Smalen via llvm-commits]

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@@ -412,7 +417,8 @@ AArch64TargetMachine::getSubtargetImpl(const Function &F) const {
   StringRef FS = FSAttr.isValid() ? FSAttr.getValueAsString() : TargetFS;
   bool HasMinSize = F.hasMinSize();
 
-  bool IsStreaming = F.hasFnAttribute("aarch64_pstate_sm_enabled") ||
+  bool IsStreaming = ForceStreaming ||
+                     F.hasFnAttribute("aarch64_pstate_sm_enabled") ||
                      F.hasFnAttribute("aarch64_pstate_sm_body");
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sdesmalen-arm wrote:

Are you happy with me fixing up the other case in this patch as well? I figured it seems more sensible to check the `bool` first before calling some more compute-intensive function.

https://github.com/llvm/llvm-project/pull/96081