Merge pull request #3279 from dheaton-arm/implement-insertlane

Implement `Insertlane` for the Cranelift interpreter

cranelift/filetests/filetests/runtests/simd-insertlane.clif

@@ -0,0 +1,33 @@
+test interpret
+test run
+target aarch64
+set enable_simd
+target x86_64
+
+function %insertlane_15(i8x16, i8) -> i8x16 {
+block0(v0: i8x16, v1: i8):
+    v2 = insertlane v0, v1, 15
+    return v2
+}
+; run: %insertlane_15([1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1], 120) == [1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 120]
+
+function %insertlane_5(i16x8, i16) -> i16x8 {
+block0(v0: i16x8, v1: i16):
+    v2 = insertlane v0, v1, 5
+    return v2
+}
+; run: %insertlane_5([1 1 1 1 1 1 1 1], 10000) == [1 1 1 1 1 10000 1 1]
+
+function %insertlane_2(i32x4, i32) -> i32x4 {
+block0(v0: i32x4, v1: i32):
+    v2 = insertlane v0, v1, 2
+    return v2
+}
+; run: %insertlane_2([1 1 1 1], 100000) == [1 1 100000 1]
+
+function %insertlane_0(i64x2, i64) -> i64x2 {
+block0(v0: i64x2, v1: i64):
+    v2 = insertlane v0, v1, 0
+    return v2
+}
+; run: %insertlane_0([1 1], 5000000000) == [5000000000 1]