py/emitnative: Remove redundant RV32 Viper int-indexed code.

This commit removes redundant RV32 implementations of certain
int-indexed code generation operations (32-bit load/store and 16-bit
load).

Those operations were already available as part of the native emitter
API but were not exposed to the Viper code generator.  As part of the
introduction of more specialised load and store API calls to
int-indexed Viper load/store generator bits, the existing native emitter
implementations are reused, thus making the Viper implementations
redundant.

Signed-off-by: Alessandro Gatti <[email protected]>

Author: agatti

py/emitnative.c

@@ -1567,12 +1567,6 @@ static void emit_native_load_subscr(emit_t *emit) {
                     #ifdef ASM_LOAD16_REG_REG_OFFSET
                     ASM_LOAD16_REG_REG_OFFSET(emit->as, REG_RET, reg_base, index_value);
                     #else
-                    #if N_RV32
-                    if (FIT_SIGNED(index_value, 11)) {
-                        asm_rv32_opcode_lhu(emit->as, REG_RET, reg_base, index_value << 1);
-                        break;
-                    }
-                    #endif
                     if (index_value != 0) {
                         // index is a non-zero immediate
                         need_reg_single(emit, reg_index, 0);
@@ -1589,12 +1583,6 @@ static void emit_native_load_subscr(emit_t *emit) {
                     #ifdef ASM_LOAD32_REG_REG_OFFSET
                     ASM_LOAD32_REG_REG_OFFSET(emit->as, REG_RET, reg_base, index_value);
                     #else
-                    #if N_RV32
-                    if (FIT_SIGNED(index_value, 10)) {
-                        asm_rv32_opcode_lw(emit->as, REG_RET, reg_base, index_value << 2);
-                        break;
-                    }
-                    #endif
                     if (index_value != 0) {
                         // index is a non-zero immediate
                         need_reg_single(emit, reg_index, 0);
@@ -1855,12 +1843,6 @@ static void emit_native_store_subscr(emit_t *emit) {
                     #ifdef ASM_STORE32_REG_REG_OFFSET
                     ASM_STORE32_REG_REG_OFFSET(emit->as, reg_value, reg_base, index_value);
                     #else
-                    #if N_RV32
-                    if (FIT_SIGNED(index_value, 10)) {
-                        asm_rv32_opcode_sw(emit->as, reg_value, reg_base, index_value << 2);
-                        break;
-                    }
-                    #endif
                     if (index_value != 0) {
                         // index is a non-zero immediate
                         #if N_ARM