Subzero, MIPS32: Enable MIPS support in lit tests

tests_lit/llvm2ice_tests/sdiv.ll

 ; This checks the correctness of the lowering code for the small
 ; integer variants of sdiv and srem.
 
 ; RUN: %p2i -i %s --filetype=obj --disassemble --args -O2 | FileCheck %s
 ; RUN: %p2i -i %s --filetype=obj --disassemble --args -Om1 | FileCheck %s
 
+; RUN: %if --need=target_MIPS32 --need=allow_dump \
+; RUN:   --command %p2i --filetype=asm --assemble --disassemble --target \
+; RUN:   mips32 -i %s --args -O2 -allow-externally-defined-symbols \
+; RUN:   | %if --need=target_MIPS32 --need=allow_dump \
+; RUN:   --command FileCheck --check-prefix MIPS32 %s
+
 define internal i32 @sdiv_i8(i32 %a.i32, i32 %b.i32) {
 entry:
   %a = trunc i32 %a.i32 to i8
   %b = trunc i32 %b.i32 to i8
   %res = sdiv i8 %a, %b
   %res.i32 = zext i8 %res to i32
   ret i32 %res.i32
 ; CHECK-LABEL: sdiv_i8
 ; CHECK: cbw
 ; CHECK: idiv
+; MIPS32-LABEL: sdiv_i8
+; MIPS32:       div
+; MIPS32:       teq
+; MIPS32:       mflo
+; MIPS32:       andi    {{.*}},0xff
 }
 
 define internal i32 @sdiv_i16(i32 %a.i32, i32 %b.i32) {
 entry:
   %a = trunc i32 %a.i32 to i16
   %b = trunc i32 %b.i32 to i16
   %res = sdiv i16 %a, %b
   %res.i32 = zext i16 %res to i32
   ret i32 %res.i32
 ; CHECK-LABEL: sdiv_i16
 ; CHECK: cwd
 ; CHECK: idiv
+; MIPS32-LABEL: sdiv_i16
+; MIPS32:       div
+; MIPS32:       teq
+; MIPS32:       mflo
+; MIPS32:       andi    {{.*}},0xffff
 }
 
 define internal i32 @sdiv_i32(i32 %a, i32 %b) {
 entry:
   %res = sdiv i32 %a, %b
   ret i32 %res
 ; CHECK-LABEL: sdiv_i32
 ; CHECK: cdq
 ; CHECK: idiv
+; MIPS32-LABEL: sdiv_i32
+; MIPS32:       div
+; MIPS32:       teq
+; MIPS32:       mflo
 }
 
 define internal i32 @srem_i8(i32 %a.i32, i32 %b.i32) {
 entry:
   %a = trunc i32 %a.i32 to i8
   %b = trunc i32 %b.i32 to i8
   %res = srem i8 %a, %b
   %res.i32 = zext i8 %res to i32
   ret i32 %res.i32
 ; CHECK-LABEL: srem_i8
 ; CHECK: cbw
 ; CHECK: idiv
+; MIPS32-LABEL: srem_i8
+; MIPS32:       div
+; MIPS32:       teq
+; MIPS32:       mfhi
+; MIPS32:       andi    {{.*}},0xff
 }
 
 define internal i32 @srem_i16(i32 %a.i32, i32 %b.i32) {
 entry:
   %a = trunc i32 %a.i32 to i16
   %b = trunc i32 %b.i32 to i16
   %res = srem i16 %a, %b
   %res.i32 = zext i16 %res to i32
   ret i32 %res.i32
 ; CHECK-LABEL: srem_i16
 ; CHECK: cwd
 ; CHECK: idiv
+; MIPS32-LABEL: srem_i16
+; MIPS32:       div
+; MIPS32:       teq
+; MIPS32:       mfhi
+; MIPS32:       andi    {{.*}},0xffff
 }
 
 define internal i32 @srem_i32(i32 %a, i32 %b) {
 entry:
   %res = srem i32 %a, %b
   ret i32 %res
 ; CHECK-LABEL: srem_i32
 ; CHECK: cdq
 ; CHECK: idiv
+; MIPS32-LABEL: srem_i32
+; MIPS32:       div
+; MIPS32:       teq
+; MIPS32:       mfhi
 }