[PATCH] [X86] Updates to X86 backend for f16 promotion

[Elena Demikhovsky]

================
Comment at: test/CodeGen/X86/half.ll:89
@@ +88,3 @@
+; CHECK-FP16: vcvtsi2ssq
+; CHECK-FP16: vcvtps2ph
+  %r = sitofp i64 %a to half
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This instruction converts and stores the value. Could you, please, show the store in CHECK, somthing like (%rdi)

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Comment at: test/CodeGen/X86/half.ll:157
@@ +156,3 @@
+; CHECK: callq  __truncdfhf2
+  %v = fptrunc <4 x double> %a to <4 x half>
+  store <4 x half> %v, <4 x half>* %p
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Why double to half can't go through the chain (double -> float ->half). I'm just asking..

http://reviews.llvm.org/D9092

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