PR9535: add support for splitting and scalarizing vector ISD::FP_ROUND.
Also cleaning up some duplicated code while I'm here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128176 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/fp-trunc.ll b/test/CodeGen/X86/fp-trunc.ll
new file mode 100644
index 0000000..4fe78ec
--- /dev/null
+++ b/test/CodeGen/X86/fp-trunc.ll
@@ -0,0 +1,35 @@
+; RUN: llc < %s -march=x86 -mattr=+sse2,-avx
+
+define <1 x float> @test1(<1 x double> %x) nounwind {
+; CHECK: cvtsd2ss
+; CHECK: ret
+ %y = fptrunc <1 x double> %x to <1 x float>
+ ret <1 x float> %y
+}
+
+
+define <2 x float> @test2(<2 x double> %x) nounwind {
+; FIXME: It would be nice if this compiled down to a cvtpd2ps
+; CHECK: cvtsd2ss
+; CHECK: cvtsd2ss
+; CHECK: ret
+ %y = fptrunc <2 x double> %x to <2 x float>
+ ret <2 x float> %y
+}
+
+define <8 x float> @test3(<8 x double> %x) nounwind {
+; FIXME: It would be nice if this compiled down to a series of cvtpd2ps
+; CHECK: cvtsd2ss
+; CHECK: cvtsd2ss
+; CHECK: cvtsd2ss
+; CHECK: cvtsd2ss
+; CHECK: cvtsd2ss
+; CHECK: cvtsd2ss
+; CHECK: cvtsd2ss
+; CHECK: cvtsd2ss
+; CHECK: ret
+ %y = fptrunc <8 x double> %x to <8 x float>
+ ret <8 x float> %y
+}
+
+