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

tests_lit/llvm2ice_tests/fp.cmp.ll

 ; This tries to be a comprehensive test of f32 and f64 compare operations.
 ; The CHECK lines are only checking for basic instruction patterns
 ; that should be present regardless of the optimization level, so
 ; there are no special OPTM1 match lines.
 
-; RUN: %p2i --filetype=obj --disassemble -i %s --args -O2 | FileCheck %s
-; RUN: %p2i --filetype=obj --disassemble -i %s --args -Om1 | FileCheck %s
+; RUN: %p2i --filetype=obj --disassemble -i %s --args -O2 \
+; RUN:   -allow-externally-defined-symbols | FileCheck %s
+; RUN: %p2i --filetype=obj --disassemble -i %s --args -Om1 \
+; RUN:   -allow-externally-defined-symbols | FileCheck %s
 
 ; RUN: %if --need=allow_dump --need=target_ARM32 --command %p2i --filetype=asm \
 ; RUN:   --target arm32 -i %s --args -O2 --skip-unimplemented \
+; RUN:   -allow-externally-defined-symbols \
 ; RUN:   | %if --need=allow_dump --need=target_ARM32 --command FileCheck %s \
 ; RUN:   --check-prefix=ARM32
 
 ; RUN: %if --need=allow_dump --need=target_ARM32 --command %p2i --filetype=asm \
 ; RUN:   --target arm32 -i %s --args -Om1 --skip-unimplemented \
+; RUN:   -allow-externally-defined-symbols \
 ; RUN:   | %if --need=allow_dump --need=target_ARM32 --command FileCheck %s \
 ; RUN:   --check-prefix=ARM32
 
 define internal void @fcmpEq(float %a, float %b, double %c, double %d) {
 entry:
   %cmp = fcmp oeq float %a, %b
   br i1 %cmp, label %if.then, label %if.end
 
 if.then:                                          ; preds = %entry
   call void @func()
@@ skipping 716 matching lines @@
   ret double %cond
 }
 ; CHECK-LABEL: selectDoubleVarVar
 ; CHECK: ucomisd
 ; CHECK: seta
 ; CHECK: fld
 ; ARM32-LABEL: selectDoubleVarVar
 ; ARM32: vcmp.f64
 ; ARM32: vmovne.f64 d{{[0-9]+}}
 ; ARM32: bx