Make sure that all globals are internal, except for "start" functions.

tests_lit/llvm2ice_tests/convert.ll

 ; Simple test of signed and unsigned integer conversions.
 
 ; 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 14 matching lines @@
 
 @i8v = internal global [1 x i8] zeroinitializer, align 1
 @i16v = internal global [2 x i8] zeroinitializer, align 2
 @i32v = internal global [4 x i8] zeroinitializer, align 4
 @i64v = internal global [8 x i8] zeroinitializer, align 8
 @u8v = internal global [1 x i8] zeroinitializer, align 1
 @u16v = internal global [2 x i8] zeroinitializer, align 2
 @u32v = internal global [4 x i8] zeroinitializer, align 4
 @u64v = internal global [8 x i8] zeroinitializer, align 8
 
-define void @from_int8() {
+define internal void @from_int8() {
 entry:
   %__0 = bitcast [1 x i8]* @i8v to i8*
   %v0 = load i8, i8* %__0, align 1
   %v1 = sext i8 %v0 to i16
   %__3 = bitcast [2 x i8]* @i16v to i16*
   store i16 %v1, i16* %__3, align 1
   %v2 = sext i8 %v0 to i32
   %__5 = bitcast [4 x i8]* @i32v to i32*
   store i32 %v2, i32* %__5, align 1
   %v3 = sext i8 %v0 to i64
@@ skipping 20 matching lines @@
 ; ARM32: strh
 ; ARM32: sxtb
 ; ARM32: movw {{.*}}i32v
 ; ARM32: str r
 ; ARM32: sxtb
 ; ARM32: asr
 ; ARM32: movw {{.*}}i64v
 ; ARM32-DAG: str r{{.*}}, [r{{[0-9]+}}]
 ; ARM32-DAG: str r{{.*}}, [{{.*}}, #4]
 
-define void @from_int16() {
+define internal void @from_int16() {
 entry:
   %__0 = bitcast [2 x i8]* @i16v to i16*
   %v0 = load i16, i16* %__0, align 1
   %v1 = trunc i16 %v0 to i8
   %__3 = bitcast [1 x i8]* @i8v to i8*
   store i8 %v1, i8* %__3, align 1
   %v2 = sext i16 %v0 to i32
   %__5 = bitcast [4 x i8]* @i32v to i32*
   store i32 %v2, i32* %__5, align 1
   %v3 = sext i16 %v0 to i64
@@ skipping 16 matching lines @@
 ; ARM32: movw {{.*}}i8v
 ; ARM32: strb
 ; ARM32: sxth
 ; ARM32: movw {{.*}}i32v
 ; ARM32: str r
 ; ARM32: sxth
 ; ARM32: asr
 ; ARM32: movw {{.*}}i64v
 ; ARM32: str r
 
-define void @from_int32() {
+define internal void @from_int32() {
 entry:
   %__0 = bitcast [4 x i8]* @i32v to i32*
   %v0 = load i32, i32* %__0, align 1
   %v1 = trunc i32 %v0 to i8
   %__3 = bitcast [1 x i8]* @i8v to i8*
   store i8 %v1, i8* %__3, align 1
   %v2 = trunc i32 %v0 to i16
   %__5 = bitcast [2 x i8]* @i16v to i16*
   store i16 %v2, i16* %__5, align 1
   %v3 = sext i32 %v0 to i64
@@ skipping 12 matching lines @@
 ; ARM32: movw {{.*}}i32v
 ; ARM32: ldr r
 ; ARM32: movw {{.*}}i8v
 ; ARM32: strb
 ; ARM32: movw {{.*}}i16v
 ; ARM32: strh
 ; ARM32: asr
 ; ARM32: movw {{.*}}i64v
 ; ARM32: str r
 
-define void @from_int64() {
+define internal void @from_int64() {
 entry:
   %__0 = bitcast [8 x i8]* @i64v to i64*
   %v0 = load i64, i64* %__0, align 1
   %v1 = trunc i64 %v0 to i8
   %__3 = bitcast [1 x i8]* @i8v to i8*
   store i8 %v1, i8* %__3, align 1
   %v2 = trunc i64 %v0 to i16
   %__5 = bitcast [2 x i8]* @i16v to i16*
   store i16 %v2, i16* %__5, align 1
   %v3 = trunc i64 %v0 to i32
@@ skipping 10 matching lines @@
 ; ARM32-LABEL: from_int64
 ; ARM32: movw {{.*}}i64v
 ; ARM32: ldr r
 ; ARM32: movw {{.*}}i8v
 ; ARM32: strb
 ; ARM32: movw {{.*}}i16v
 ; ARM32: strh
 ; ARM32: movw {{.*}}i32v
 ; ARM32: str r
 
-define void @from_uint8() {
+define internal void @from_uint8() {
 entry:
   %__0 = bitcast [1 x i8]* @u8v to i8*
   %v0 = load i8, i8* %__0, align 1
   %v1 = zext i8 %v0 to i16
   %__3 = bitcast [2 x i8]* @i16v to i16*
   store i16 %v1, i16* %__3, align 1
   %v2 = zext i8 %v0 to i32
   %__5 = bitcast [4 x i8]* @i32v to i32*
   store i32 %v2, i32* %__5, align 1
   %v3 = zext i8 %v0 to i64
@@ skipping 18 matching lines @@
 ; ARM32: movw {{.*}}i16v
 ; ARM32: strh
 ; ARM32: uxtb
 ; ARM32: movw {{.*}}i32v
 ; ARM32: str r
 ; ARM32: uxtb
 ; ARM32: mov {{.*}}, #0
 ; ARM32: movw {{.*}}i64v
 ; ARM32: str r
 
-define void @from_uint16() {
+define internal void @from_uint16() {
 entry:
   %__0 = bitcast [2 x i8]* @u16v to i16*
   %v0 = load i16, i16* %__0, align 1
   %v1 = trunc i16 %v0 to i8
   %__3 = bitcast [1 x i8]* @i8v to i8*
   store i8 %v1, i8* %__3, align 1
   %v2 = zext i16 %v0 to i32
   %__5 = bitcast [4 x i8]* @i32v to i32*
   store i32 %v2, i32* %__5, align 1
   %v3 = zext i16 %v0 to i64
@@ skipping 16 matching lines @@
 ; ARM32: movw {{.*}}i8v
 ; ARM32: strb
 ; ARM32: uxth
 ; ARM32: movw {{.*}}i32v
 ; ARM32: str r
 ; ARM32: uxth
 ; ARM32: mov {{.*}}, #0
 ; ARM32: movw {{.*}}i64v
 ; ARM32: str r
 
-define void @from_uint32() {
+define internal void @from_uint32() {
 entry:
   %__0 = bitcast [4 x i8]* @u32v to i32*
   %v0 = load i32, i32* %__0, align 1
   %v1 = trunc i32 %v0 to i8
   %__3 = bitcast [1 x i8]* @i8v to i8*
   store i8 %v1, i8* %__3, align 1
   %v2 = trunc i32 %v0 to i16
   %__5 = bitcast [2 x i8]* @i16v to i16*
   store i16 %v2, i16* %__5, align 1
   %v3 = zext i32 %v0 to i64
@@ skipping 12 matching lines @@
 ; ARM32: movw {{.*}}u32v
 ; ARM32: ldr r
 ; ARM32: movw {{.*}}i8v
 ; ARM32: strb
 ; ARM32: movw {{.*}}i16v
 ; ARM32: strh
 ; ARM32: mov {{.*}}, #0
 ; ARM32: movw {{.*}}i64v
 ; ARM32: str r
 
-define void @from_uint64() {
+define internal void @from_uint64() {
 entry:
   %__0 = bitcast [8 x i8]* @u64v to i64*
   %v0 = load i64, i64* %__0, align 1
   %v1 = trunc i64 %v0 to i8
   %__3 = bitcast [1 x i8]* @i8v to i8*
   store i8 %v1, i8* %__3, align 1
   %v2 = trunc i64 %v0 to i16
   %__5 = bitcast [2 x i8]* @i16v to i16*
   store i16 %v2, i16* %__5, align 1
   %v3 = trunc i64 %v0 to i32
   %__7 = bitcast [4 x i8]* @i32v to i32*
   store i32 %v3, i32* %__7, align 1
   ret void
 }
 ; CHECK-LABEL: from_uint64
 ; CHECK: 0x0 {{.*}} u64v
 ; CHECK: 0x0,{{.*}} i8v
 ; CHECK: 0x0,{{.*}} i16v
 ; CHECK: 0x0,{{.*}} i32v
 
 ; ARM32-LABEL: from_uint64
 ; ARM32: movw {{.*}}u64v
 ; ARM32: ldr r
 ; ARM32: movw {{.*}}i8v
 ; ARM32: strb
 ; ARM32: movw {{.*}}i16v
 ; ARM32: strh
 ; ARM32: movw {{.*}}i32v
 ; ARM32: str r