Subzero. ARM32. Removing memory legalization warts.

tests_lit/assembler/arm32/store-sf.ll

 ; Sample program that generates "str reg, [fp, #CCCC]", to show that we
 ; recognize that "fp" should be used instead of "sp".
 
 ; 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.
@@ skipping 39 matching lines @@
 ; IASM-NEXT:    .byte 0x4d
 ; IASM-NEXT:    .byte 0xe2
 
 ; **** Example of fixed instruction.
 ; ASM-NEXT:     str     r0, [fp, #-4]
 ; DIS-NEXT:    c:       e50b0004
 ; IASM-NEXT:    .byte 0x4
 ; IASM-NEXT:    .byte 0x0
 ; IASM-NEXT:    .byte 0xb
 ; IASM-NEXT:    .byte 0xe5
-
+; ASM-NEXT:     # [fp, #-4] = def.pseudo
   br label %next
 
 ; ASM-NEXT:     b       .Ltest_vla_in_loop$next
 ; DIS-NEXT:   10:       eaffffff
 
 ; IASM-NEXT:    .byte 0xff
 ; IASM-NEXT:    .byte 0xff
 ; IASM-NEXT:    .byte 0xff
 ; IASM-NEXT:    .byte 0xea
 
 ; Put the variable-length alloca in a non-entry block, to reduce the
 ; chance the optimizer putting it before the regular frame creation.
 
 next:
   %v = alloca i8, i32 %n, align 4
   ret void
 }