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

tests_lit/llvm2ice_tests/commutativity.ll

 ; Test the lowering sequence for commutative operations.  If there is a source
 ; operand whose lifetime ends in an operation, it should be the first operand,
 ; eliminating the need for a move to start the new lifetime.
 
 ; 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
 
-define i32 @integerAddLeft(i32 %a, i32 %b) {
+define internal i32 @integerAddLeft(i32 %a, i32 %b) {
 entry:
   %tmp = add i32 %a, %b
   %result = add i32 %a, %tmp
   ret i32 %result
 }
 ; CHECK-LABEL: integerAddLeft
 ; CHECK-NEXT: mov {{e..}},DWORD PTR
 ; CHECK-NEXT: mov {{e..}},DWORD PTR
 ; CHECK-NEXT: add {{e..}},{{e..}}
 ; CHECK-NEXT: add {{e..}},{{e..}}
 
-define i32 @integerAddRight(i32 %a, i32 %b) {
+define internal i32 @integerAddRight(i32 %a, i32 %b) {
 entry:
   %tmp = add i32 %a, %b
   %result = add i32 %b, %tmp
   ret i32 %result
 }
 ; CHECK-LABEL: integerAddRight
 ; CHECK-NEXT: mov {{e..}},DWORD PTR
 ; CHECK-NEXT: mov {{e..}},DWORD PTR
 ; CHECK-NEXT: add {{e..}},{{e..}}
 ; CHECK-NEXT: add {{e..}},{{e..}}
 
-define i32 @integerMultiplyLeft(i32 %a, i32 %b) {
+define internal i32 @integerMultiplyLeft(i32 %a, i32 %b) {
 entry:
   %tmp = mul i32 %a, %b
   %result = mul i32 %a, %tmp
   ret i32 %result
 }
 ; CHECK-LABEL: integerMultiplyLeft
 ; CHECK-NEXT: mov {{e..}},DWORD PTR
 ; CHECK-NEXT: mov {{e..}},DWORD PTR
 ; CHECK-NEXT: imul {{e..}},{{e..}}
 ; CHECK-NEXT: imul {{e..}},{{e..}}
 
-define i32 @integerMultiplyRight(i32 %a, i32 %b) {
+define internal i32 @integerMultiplyRight(i32 %a, i32 %b) {
 entry:
   %tmp = mul i32 %a, %b
   %result = mul i32 %b, %tmp
   ret i32 %result
 }
 ; CHECK-LABEL: integerMultiplyRight
 ; CHECK-NEXT: mov {{e..}},DWORD PTR
 ; CHECK-NEXT: mov {{e..}},DWORD PTR
 ; CHECK-NEXT: imul {{e..}},{{e..}}
 ; CHECK-NEXT: imul {{e..}},{{e..}}
 
-define float @floatAddLeft(float %a, float %b) {
+define internal float @floatAddLeft(float %a, float %b) {
 entry:
   %tmp = fadd float %a, %b
   %result = fadd float %a, %tmp
   ret float %result
 }
 ; CHECK-LABEL: floatAddLeft
 ; CHECK-NEXT: movss xmm0,DWORD PTR
 ; CHECK-NEXT: movss xmm1,DWORD PTR
 ; CHECK-NEXT: addss xmm1,xmm0
 ; CHECK-NEXT: addss xmm0,xmm1
 
-define float @floatAddRight(float %a, float %b) {
+define internal float @floatAddRight(float %a, float %b) {
 entry:
   %tmp = fadd float %a, %b
   %result = fadd float %b, %tmp
   ret float %result
 }
 ; CHECK-LABEL: floatAddRight
 ; CHECK-NEXT: movss xmm0,DWORD PTR
 ; CHECK-NEXT: movss xmm1,DWORD PTR
 ; CHECK-NEXT: addss xmm0,xmm1
 ; CHECK-NEXT: addss xmm1,xmm0
 
-define float @floatMultiplyLeft(float %a, float %b) {
+define internal float @floatMultiplyLeft(float %a, float %b) {
 entry:
   %tmp = fmul float %a, %b
   %result = fmul float %a, %tmp
   ret float %result
 }
 ; CHECK-LABEL: floatMultiplyLeft
 ; CHECK-NEXT: movss xmm0,DWORD PTR
 ; CHECK-NEXT: movss xmm1,DWORD PTR
 ; CHECK-NEXT: mulss xmm1,xmm0
 ; CHECK-NEXT: mulss xmm0,xmm1
 
-define float @floatMultiplyRight(float %a, float %b) {
+define internal float @floatMultiplyRight(float %a, float %b) {
 entry:
   %tmp = fmul float %a, %b
   %result = fmul float %b, %tmp
   ret float %result
 }
 ; CHECK-LABEL: floatMultiplyRight
 ; CHECK-NEXT: movss xmm0,DWORD PTR
 ; CHECK-NEXT: movss xmm1,DWORD PTR
 ; CHECK-NEXT: mulss xmm0,xmm1
 ; CHECK-NEXT: mulss xmm1,xmm0