Handle another form of MOVW in ARM integrated assembler.

tests_lit/assembler/arm32/mov-const.ll

+; Show that we handle constants in a movw, when it isn't represented as
+; ConstantRelocatable (see mov-imm.ll for the ConstantRelocatable case).
+
+; REQUIRES: allow_dump
+
+; Compile using standalone assembler.
+; RUN: %p2i --filetype=asm -i %s --target=arm32 --args -Om1 \
+; RUN:   --test-stack-extra 4084 | FileCheck %s --check-prefix=ASM
+
+; Show bytes in assembled standalone code.
+; RUN: %p2i --filetype=asm -i %s --target=arm32 --assemble --disassemble \
+; RUN:   --args -Om1 --test-stack-extra 4084 | FileCheck %s --check-prefix=DIS
+
+; Compile using integrated assembler.
+; RUN: %p2i --filetype=iasm -i %s --target=arm32 --args -Om1 -unsafe-ias \
+; RUN:   --test-stack-extra 4084 | FileCheck %s --check-prefix=IASM
+
+; Show bytes in assembled integrated code.
+; RUN: %p2i --filetype=iasm -i %s --target=arm32 --assemble --disassemble \
+; RUN:   --args -Om1 -unsafe-ias --test-stack-extra 4084 \
+; RUN:   | FileCheck %s --check-prefix=DIS
+
+define internal i32 @foo(i32 %x) {
+entry:
+
+; ASM-LABEL: foo:
+; ASM-NEXT: .Lfoo$entry:
+; ******* Movw case to check *******
+; ASM-NEXT:     movw    ip, #4092
+; ASM-NEXT:     sub     sp, sp, ip
+; ASM-NEXT:     str     r0, [sp, #4088]
+
+; DIS-LABEL: 00000000 <foo>:
+; DIS-NEXT:    0:       e300cffc
+; DIS-NEXT:    4:       e04dd00c
+; DIS-NEXT:    8:       e58d0ff8
+
+; IASM-LABEL: foo:
+; IASM-NEXT: .Lfoo$entry:
+
+; IASM-NEXT:    .byte 0xfc
+; IASM-NEXT:    .byte 0xcf
+; IASM-NEXT:    .byte 0x0
+; IASM-NEXT:    .byte 0xe3
+
+; IASM-NEXT:    .byte 0xc
+; IASM-NEXT:    .byte 0xd0
+; IASM-NEXT:    .byte 0x4d
+; IASM-NEXT:    .byte 0xe0
+
+; IASM-NEXT:    .byte 0xf8
+; IASM-NEXT:    .byte 0xf
+; IASM-NEXT:    .byte 0x8d
+; IASM-NEXT:    .byte 0xe5
+
+  %mul = mul i32 %x, %x
+
+; ASM-NEXT:     ldr     r0, [sp, #4088]
+; ASM-NEXT:     ldr     r1, [sp, #4088]
+; ASM-NEXT:     mul     r0, r0, r1
+; ASM-NEXT:     str     r0, [sp, #4084]
+
+; DIS-NEXT:    c:       e59d0ff8
+; DIS-NEXT:   10:       e59d1ff8
+; DIS-NEXT:   14:       e0000190
+; DIS-NEXT:   18:       e58d0ff4
+
+; IASM-NEXT:    .byte 0xf8
+; IASM-NEXT:    .byte 0xf
+; IASM-NEXT:    .byte 0x9d
+; IASM-NEXT:    .byte 0xe5
+
+; IASM-NEXT:    .byte 0xf8
+; IASM-NEXT:    .byte 0x1f
+; IASM-NEXT:    .byte 0x9d
+; IASM-NEXT:    .byte 0xe5
+
+; IASM-NEXT:    .byte 0x90
+; IASM-NEXT:    .byte 0x1
+; IASM-NEXT:    .byte 0x0
+; IASM-NEXT:    .byte 0xe0
+
+; IASM-NEXT:    .byte 0xf4
+; IASM-NEXT:    .byte 0xf
+; IASM-NEXT:    .byte 0x8d
+; IASM-NEXT:    .byte 0xe5
+
+  ret i32 %mul
+
+; ASM-NEXT:     ldr     r0, [sp, #4084]
+; ******* Movw case to check *******
+; ASM-NEXT:     movw    ip, #4092
+; ASM-NEXT:     add     sp, sp, ip
+; ASM-NEXT:     bx      lr
+
+; DIS-NEXT:   1c:       e59d0ff4
+; DIS-NEXT:   20:       e300cffc
+; DIS-NEXT:   24:       e08dd00c
+; DIS-NEXT:   28:       e12fff1e
+
+; IASM-NEXT:    .byte 0xf4
+; IASM-NEXT:    .byte 0xf
+; IASM-NEXT:    .byte 0x9d
+; IASM-NEXT:    .byte 0xe5
+
+; IASM-NEXT:    .byte 0xfc
+; IASM-NEXT:    .byte 0xcf
+; IASM-NEXT:    .byte 0x0
+; IASM-NEXT:    .byte 0xe3
+
+; IASM-NEXT:    .byte 0xc
+; IASM-NEXT:    .byte 0xd0
+; IASM-NEXT:    .byte 0x8d
+; IASM-NEXT:    .byte 0xe0
+
+; IASM-NEXT:    .byte 0x1e
+; IASM-NEXT:    .byte 0xff
+; IASM-NEXT:    .byte 0x2f
+; IASM-NEXT:    .byte 0xe1
+
+}