Add vcvt.s32.f32 instruction to the integrated ARM assembler.

src/IceInstARM32.cpp

Index: src/IceInstARM32.cpp
diff --git a/src/IceInstARM32.cpp b/src/IceInstARM32.cpp
index a1605828e3eae08637d8615c6632cd633303a5de..da2bb5c8cc6543ebc13106bb1808f6cefc67734f 100644
--- a/src/IceInstARM32.cpp
+++ b/src/IceInstARM32.cpp
@@ -1826,6 +1826,9 @@ void InstARM32Vcvt::emit(const Cfg *Func) const {
 void InstARM32Vcvt::emitIAS(const Cfg *Func) const {
   auto *Asm = Func->getAssembler<ARM32::AssemblerARM32>();
   switch (Variant) {
+  case S2si:
+    Asm->vcvtis(getDest(), getSrc(0), getPredicate());
+    break;
   case S2d:
     Asm->vcvtds(getDest(), getSrc(0), getPredicate());
     break;