Add instruction veord to the integrated ARM assembler.

tests_lit/assembler/arm32/veor.ll

+; Show that we know how to translate veor. Does this by noting that
+; loading a double 0.0 introduces a veor.
+
+; REQUIRES: allow_dump
+
+; Compile using standalone assembler.
+; RUN: %p2i --filetype=asm -i %s --target=arm32 --args -Om1 \
+; RUN:   | FileCheck %s --check-prefix=ASM
+
+; Show bytes in assembled standalone code.
+; RUN: %p2i --filetype=asm -i %s --target=arm32 --assemble --disassemble \
+; RUN:   --args -Om1 \
+; RUN:   | FileCheck %s --check-prefix=DIS
+
+; Compile using integrated assembler.
+; RUN: %p2i --filetype=iasm -i %s --target=arm32 --args -Om1 \
+; RUN:   | FileCheck %s --check-prefix=IASM
+
+; Show bytes in assembled integrated code.
+; RUN: %p2i --filetype=iasm -i %s --target=arm32 --assemble --disassemble \
+; RUN:   --args -Om1 \
+; RUN:   | FileCheck %s --check-prefix=DIS
+
+define internal double @testVeor() {
+; ASM-LABEL: testVeor:
+; DIS: 00000000 <testVeor>:
+
+entry:
+; ASM: .LtestVeor$entry:
+
+  ret double 0.0
+
+; ASM:  veor.f64        d0, d0, d0
+; DIS:    0:    f3000110
+; IASM-NOT: veor
+
+}