[SubZero] Utilize instructions with immediate operands

tests_lit/llvm2ice_tests/shift.ll

 ; This is a test of C-level conversion operations that clang lowers
 ; into pairs of shifts.
 
 ; RUN: %if --need=target_X8632 --command %p2i --filetype=obj --disassemble \
 ; RUN:   --target x8632 -i %s --args -O2 \
 ; RUN:   | %if --need=target_X8632 --command FileCheck %s
 
 ; RUN: %if --need=target_X8632 --command %p2i --filetype=obj --disassemble \
 ; RUN:   --target x8632 -i %s --args -Om1 \
 ; RUN:   | %if --need=target_X8632 --command FileCheck %s
@@ skipping 64 matching lines @@
 
 define internal i32 @shlImmLarge(i32 %val) {
 entry:
   %result = shl i32 %val, 257
   ret i32 %result
 }
 ; CHECK-LABEL: shlImmLarge
 ; CHECK: shl {{.*}},0x1
 
 ; MIPS32-LABEL: shlImmLarge
-; MIPS32: sllv
+; MIPS32: sll
 
 define internal i32 @shlImmNeg(i32 %val) {
 entry:
   %result = shl i32 %val, -1
   ret i32 %result
 }
 ; CHECK-LABEL: shlImmNeg
 ; CHECK: shl {{.*}},0xff
 
 ; MIPS32-LABEL: shlImmNeg
-; MIPS32: sllv
+; MIPS32: sll
 
 define internal i32 @lshrImmLarge(i32 %val) {
 entry:
   %result = lshr i32 %val, 257
   ret i32 %result
 }
 ; CHECK-LABEL: lshrImmLarge
 ; CHECK: shr {{.*}},0x1
 
 ; MIPS32-LABEL: lshrImmLarge
-; MIPS32: srlv
+; MIPS32: srl
 
 define internal i32 @lshrImmNeg(i32 %val) {
 entry:
   %result = lshr i32 %val, -1
   ret i32 %result
 }
 ; CHECK-LABEL: lshrImmNeg
 ; CHECK: shr {{.*}},0xff
 
 ; MIPS32-LABEL: lshrImmNeg
-; MIPS32: srlv
+; MIPS32: srl
 
 define internal i32 @ashrImmLarge(i32 %val) {
 entry:
   %result = ashr i32 %val, 257
   ret i32 %result
 }
 ; CHECK-LABEL: ashrImmLarge
 ; CHECK: sar {{.*}},0x1
 
 ; MIPS32-LABEL: ashrImmLarge
-; MIPS32: srav
+; MIPS32: sra
 
 define internal i32 @ashrImmNeg(i32 %val) {
 entry:
   %result = ashr i32 %val, -1
   ret i32 %result
 }
 ; CHECK-LABEL: ashrImmNeg
 ; CHECK: sar {{.*}},0xff
 
 ; MIPS32-LABEL: ashrImmNeg
-; MIPS32: srav
+; MIPS32: sra
 
 define internal i64 @shlImm64One(i64 %val) {
 entry:
   %result = shl i64 %val, 1
   ret i64 %result
 }
 ; CHECK-LABEL: shlImm64One
 ; CHECK: shl {{.*}},1
 ; MIPS32-LABEL: shlImm64One
 ; MIPS32: addu  [[T_LO:.*]],[[VAL_LO:.*]],[[VAL_LO]]
@@ skipping 136 matching lines @@
 entry:
   %result = ashr i64 %val, 40
   ret i64 %result
 }
 ; CHECK-LABEL: ashrImm64GreaterThan32
 ; CHECK: sar {{.*}},0x1f
 ; CHECK: shrd {{.*}},0x8
 ; MIPS32-LABEL: ashrImm64GreaterThan32
 ; MIPS32: sra   {{.*}},[[VAL_HI:.*]],0x8
 ; MIPS32: sra   {{.*}},[[VAL_HI]],0x1f