Add VMULS and VMULD instructions to integrated ARM assembler.

tests_lit/assembler/arm32/vmul.ll

+; Show that we know how to translate vmul.
+
+; NOTE: We use -O2 to get rid of memory stores.
+
+; REQUIRES: allow_dump
+
+; Compile using standalone assembler.
+; RUN: %p2i --filetype=asm -i %s --target=arm32 --args -O2 \
+; RUN:   | FileCheck %s --check-prefix=ASM
+
+; Show bytes in assembled standalone code.
+; RUN: %p2i --filetype=asm -i %s --target=arm32 --assemble --disassemble \
+; RUN:   --args -O2 | FileCheck %s --check-prefix=DIS
+
+; Compile using integrated assembler.
+; RUN: %p2i --filetype=iasm -i %s --target=arm32 --args -O2 \
+; RUN:   | FileCheck %s --check-prefix=IASM
+
+; Show bytes in assembled integrated code.
+; RUN: %p2i --filetype=iasm -i %s --target=arm32 --assemble --disassemble \
+; RUN:   --args -O2 | FileCheck %s --check-prefix=DIS
+
+define internal float @testVmulFloat(float %a, float %b) {
+; ASM-LABEL: testVmulFloat:
+; DIS-LABEL: 00000000 <testVmulFloat>:
+; IASM-LABEL: testVmulFloat:
+
+entry:
+; ASM-NEXT: .LtestVmulFloat$entry:
+; IASM-NEXT: .LtestVmulFloat$entry:
+
+  %mul = fmul float %a, %b
+
+; ASM-NEXT:    vmul.f32        s0, s0, s1
+; DIS-NEXT:    0:       ee200a20
+; IASM-NEXT:    .byte 0x20
+; IASM-NEXT:    .byte 0xa
+; IASM-NEXT:    .byte 0x20
+; IASM-NEXT:    .byte 0xee
+
+  ret float %mul
+}
+
+define internal double @testVmulDouble(double %a, double %b) {
+; ASM-LABEL: testVmulDouble:
+; DIS-LABEL: 00000010 <testVmulDouble>:
+; IASM-LABEL: testVmulDouble:
+
+entry:
+; ASM-NEXT: .LtestVmulDouble$entry:
+; IASM-NEXT: .LtestVmulDouble$entry:
+
+  %mul = fmul double %a, %b
+
+; ASM-NEXT:    vmul.f64        d0, d0, d1
+; DIS-NEXT:   10:       ee200b01
+; IASM-NEXT:    .byte 0x1
+; IASM-NEXT:    .byte 0xb
+; IASM-NEXT:    .byte 0x20
+; IASM-NEXT:    .byte 0xee
+
+  ret double %mul
+}