Subzero: Removed unnecessary global access checks

tests_lit/asan_tests/instrumentload.ll

 ; Test for a call to __asan_check() preceding loads
 
 ; REQUIRES: allow_dump
 
 ; RUN: %p2i -i %s --args -verbose=inst -threads=0 -fsanitize-address \
 ; RUN:     | FileCheck --check-prefix=DUMP %s
 
-; Constants to load data from
-@srcConst8 = internal constant [1 x i8] c"D"
-@srcConst16 = internal constant [2 x i8] c"DA"
-@srcConst32 = internal constant [4 x i8] c"DATA"
-@srcConst64 = internal constant [8 x i8] c"DATADATA"
-@srcConst128 = internal constant [16 x i8] c"DATADATADATADATA"
-
-; A global to load data from
-@srcGlobal8 = internal global [1 x i8] c"D"
-@srcGlobal16 = internal global [2 x i8] c"DA"
-@srcGlobal32 = internal global [4 x i8] c"DATA"
-@srcGlobal64 = internal global [8 x i8] c"DATADATA"
-@srcGlobal128 = internal global [16 x i8] c"DATADATADATADATA"
-
 ; A function with a local variable that does the loads
 define internal void @doLoads(i32 %arg8, i32 %arg16, i32 %arg32, i32 %arg64,
                               i32 %arg128) {
   %srcLocal8 = inttoptr i32 %arg8 to i8*
   %srcLocal16 = inttoptr i32 %arg16 to i16*
   %srcLocal32 = inttoptr i32 %arg32 to i32*
   %srcLocal64 = inttoptr i32 %arg64 to i64*
   %srcLocal128 = inttoptr i32 %arg128 to <4 x i32>*
 
-  %ptrConst8 = bitcast [1 x i8]* @srcConst8 to i8*
-  %ptrConst16 = bitcast [2 x i8]* @srcConst16 to i16*
-  %ptrConst32 = bitcast [4 x i8]* @srcConst32 to i32*
-  %ptrConst64 = bitcast [8 x i8]* @srcConst64 to i64*
-  %ptrConst128 = bitcast [16 x i8]* @srcConst128 to <4 x i32>*
-
-  %ptrGlobal8 = bitcast [1 x i8]* @srcGlobal8 to i8*
-  %ptrGlobal16 = bitcast [2 x i8]* @srcGlobal16 to i16*
-  %ptrGlobal32 = bitcast [4 x i8]* @srcGlobal32 to i32*
-  %ptrGlobal64 = bitcast [8 x i8]* @srcGlobal64 to i64*
-  %ptrGlobal128 = bitcast [16 x i8]* @srcGlobal128 to <4 x i32>*
-
-  %dest1 = load i8, i8* %ptrConst8, align 1
-  %dest2 = load i16, i16* %ptrConst16, align 1
-  %dest3 = load i32, i32* %ptrConst32, align 1
-  %dest4 = load i64, i64* %ptrConst64, align 1
-  %dest5 = load <4 x i32>, <4 x i32>* %ptrConst128, align 4
-
-  %dest6 = load i8, i8* %ptrGlobal8, align 1
-  %dest7 = load i16, i16* %ptrGlobal16, align 1
-  %dest8 = load i32, i32* %ptrGlobal32, align 1
-  %dest9 = load i64, i64* %ptrGlobal64, align 1
-  %dest10 = load <4 x i32>, <4 x i32>* %ptrGlobal128, align 4
-
   %dest11 = load i8, i8* %srcLocal8, align 1
   %dest12 = load i16, i16* %srcLocal16, align 1
   %dest13 = load i32, i32* %srcLocal32, align 1
   %dest14 = load i64, i64* %srcLocal64, align 1
   %dest15 = load <4 x i32>, <4 x i32>* %srcLocal128, align 4
 
   ret void
 }
 
 ; DUMP-LABEL: ================ Instrumented CFG ================
 ; DUMP-NEXT: define internal void @doLoads(
 ; DUMP-NEXT: __0:
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcConst8, i32 1)
-; DUMP-NEXT: %dest1 = load i8, i8* @srcConst8, align 1
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcConst16, i32 2)
-; DUMP-NEXT: %dest2 = load i16, i16* @srcConst16, align 1
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcConst32, i32 4)
-; DUMP-NEXT: %dest3 = load i32, i32* @srcConst32, align 1
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcConst64, i32 8)
-; DUMP-NEXT: %dest4 = load i64, i64* @srcConst64, align 1
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcConst128, i32 16)
-; DUMP-NEXT: %dest5 = load <4 x i32>, <4 x i32>* @srcConst128, align 4
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcGlobal8, i32 1)
-; DUMP-NEXT: %dest6 = load i8, i8* @srcGlobal8, align 1
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcGlobal16, i32 2)
-; DUMP-NEXT: %dest7 = load i16, i16* @srcGlobal16, align 1
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcGlobal32, i32 4)
-; DUMP-NEXT: %dest8 = load i32, i32* @srcGlobal32, align 1
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcGlobal64, i32 8)
-; DUMP-NEXT: %dest9 = load i64, i64* @srcGlobal64, align 1
-; DUMP-NEXT: call void @__asan_check_load(i32 @srcGlobal128, i32 16)
-; DUMP-NEXT: %dest10 = load <4 x i32>, <4 x i32>* @srcGlobal128, align 4
 ; DUMP-NEXT: call void @__asan_check_load(i32 %arg8, i32 1)
 ; DUMP-NEXT: %dest11 = load i8, i8* %arg8, align 1
 ; DUMP-NEXT: call void @__asan_check_load(i32 %arg16, i32 2)
 ; DUMP-NEXT: %dest12 = load i16, i16* %arg16, align 1
 ; DUMP-NEXT: call void @__asan_check_load(i32 %arg32, i32 4)
 ; DUMP-NEXT: %dest13 = load i32, i32* %arg32, align 1
 ; DUMP-NEXT: call void @__asan_check_load(i32 %arg64, i32 8)
 ; DUMP-NEXT: %dest14 = load i64, i64* %arg64, align 1
 ; DUMP-NEXT: call void @__asan_check_load(i32 %arg128, i32 16)
 ; DUMP-NEXT: %dest15 = load <4 x i32>, <4 x i32>* %arg128, align 4
 ; DUMP:      ret void
 ; DUMP-NEXT: }