[SubZero] Use DIV instruction instead of TargetHelperCall

tests_lit/llvm2ice_tests/arith.ll

Index: tests_lit/llvm2ice_tests/arith.ll
diff --git a/tests_lit/llvm2ice_tests/arith.ll b/tests_lit/llvm2ice_tests/arith.ll
index 9d6a110149ecd056f7926c4dcfba2cfdb0be0edd..a28ffff30d8c849f73545b88a994f4bd24d7612c 100644
--- a/tests_lit/llvm2ice_tests/arith.ll
+++ b/tests_lit/llvm2ice_tests/arith.ll
@@ -171,7 +171,9 @@ entry:
 ; ARM32HWDIV: sdiv
 
 ; MIPS32-LABEL: Sdiv
-; MIPS32: jal {{.*}} __divsi3
+; MIPS32: div zero,{{.*}},[[REG:.*]]
+; MIPS32: teq [[REG]],zero,0x7
+; MIPS32: mflo
 
 define internal i32 @SdivConst(i32 %a) {
 entry:
@@ -190,7 +192,9 @@ entry:
 ; ARM32HWDIV: sdiv
 
 ; MIPS32-LABEL: SdivConst
-; MIPS32: jal {{.*}} __divsi3
+; MIPS32: div zero,{{.*}},[[REG:.*]]
+; MIPS32: teq [[REG]],zero,0x7
+; MIPS32: mflo
 
 define internal i32 @Srem(i32 %a, i32 %b) {
 entry:
@@ -212,7 +216,9 @@ entry:
 ; ARM32HWDIV: mls
 
 ; MIPS32-LABEL: Srem
-; MIPS32: jal {{.*}} __modsi3
+; MIPS32: div zero,{{.*}},[[REG:.*]]
+; MIPS32: teq [[REG]],zero,0x7
+; MIPS32: mfhi
 
 define internal i32 @Udiv(i32 %a, i32 %b) {
 entry:
@@ -232,7 +238,9 @@ entry:
 ; ARM32HWDIV: udiv
 
 ; MIPS32-LABEL: Udiv
-; MIPS32: jal {{.*}} __udivsi3
+; MIPS32: divu zero,{{.*}},[[REG:.*]]
+; MIPS32: teq [[REG]],zero,0x7
+; MIPS32: mflo
 
 define internal i32 @Urem(i32 %a, i32 %b) {
 entry:
@@ -253,7 +261,9 @@ entry:
 ; ARM32HWDIV: mls
 
 ; MIPS32-LABEL: Urem
-; MIPS32: jal {{.*}} __umodsi3
+; MIPS32: divu zero,{{.*}},[[REG:.*]]
+; MIPS32: teq [[REG]],zero,0x7
+; MIPS32: mfhi
 
 ; The following tests check that shift instructions don't try to use a
 ; ConstantRelocatable as an immediate operand.