nickdesaulniers accepted this revision.
nickdesaulniers added a comment.
This revision is now accepted and ready to land.

Just a comment on the ECX bit, otherwise this patch looks fine to me. Someone 
with more x86 knowledge may want to take a look though. Thanks for the patch!



================
Comment at: llvm/lib/Target/X86/X86CallingConv.td:279
+  CCIfNotSubtarget<"hasX87()",
+    CCIfType<[f32], CCAssignToReg<[EAX, EDX, ECX]>>>,
   CCIfType<[f16], CCAssignToReg<[XMM0,XMM1,XMM2]>>,
----------------
Is there a test case that exercises the assignment to %ecx?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D112143/new/

https://reviews.llvm.org/D112143

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