Add NEON single-precision FP support for fabs and fneg.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78101 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/fnegs.ll b/test/CodeGen/ARM/fnegs.ll
new file mode 100644
index 0000000..ff171e1
--- /dev/null
+++ b/test/CodeGen/ARM/fnegs.ll
@@ -0,0 +1,23 @@
+; RUN: llvm-as < %s | llc -march=arm -mattr=+vfp2 | grep -E {fnegs\\W*s\[0-9\]+,\\W*s\[0-9\]+} | count 2
+; RUN: llvm-as < %s | llc -march=arm -mattr=+neon,+neonfp | grep -E {vneg.f32\\W*d\[0-9\]+,\\W*d\[0-9\]+} | count 2
+; RUN: llvm-as < %s | llc -march=arm -mattr=+neon,-neonfp | grep -E {fnegs\\W*s\[0-9\]+,\\W*s\[0-9\]+} | count 2
+
+define float @test1(float* %a) {
+entry:
+	%0 = load float* %a, align 4		; <float> [#uses=2]
+	%1 = fsub float -0.000000e+00, %0		; <float> [#uses=2]
+	%2 = fpext float %1 to double		; <double> [#uses=1]
+	%3 = fcmp olt double %2, 1.234000e+00		; <i1> [#uses=1]
+	%retval = select i1 %3, float %1, float %0		; <float> [#uses=1]
+	ret float %retval
+}
+
+define float @test2(float* %a) {
+entry:
+	%0 = load float* %a, align 4		; <float> [#uses=2]
+	%1 = fmul float -1.000000e+00, %0		; <float> [#uses=2]
+	%2 = fpext float %1 to double		; <double> [#uses=1]
+	%3 = fcmp olt double %2, 1.234000e+00		; <i1> [#uses=1]
+	%retval = select i1 %3, float %1, float %0		; <float> [#uses=1]
+	ret float %retval
+}