filecheckize and detrivialize.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111350 91177308-0d34-0410-b5e6-96231b3b80d8

test/Analysis/BasicAA/featuretest.ll

@@ -1,17 +1,22 @@
 ; This testcase tests for various features the basicaa test should be able to 
 ; determine, as noted in the comments.
 
-; RUN: opt < %s -basicaa -gvn -instcombine -dce -S | not grep REMOVE
+; RUN: opt < %s -basicaa -gvn -instcombine -dce -S | FileCheck %s
 target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
 
 @Global = external global { i32 }
 
+declare void @external(i32*)
+
 ; Array test:  Test that operations on one local array do not invalidate 
 ; operations on another array.  Important for scientific codes.
 ;
 define i32 @different_array_test(i64 %A, i64 %B) {
 	%Array1 = alloca i32, i32 100
 	%Array2 = alloca i32, i32 200
+        
+        call void @external(i32* %Array1)
+        call void @external(i32* %Array2)
 
 	%pointer = getelementptr i32* %Array1, i64 %A
 	%val = load i32* %pointer
@@ -22,6 +27,8 @@ define i32 @different_array_test(i64 %A, i64 %B) {
 	%REMOVE = load i32* %pointer ; redundant with above load
 	%retval = sub i32 %REMOVE, %val
 	ret i32 %retval
+; CHECK: @different_array_test
+; CHECK: ret i32 0
 }
 
 ; Constant index test: Constant indexes into the same array should not 
@@ -29,6 +36,8 @@ define i32 @different_array_test(i64 %A, i64 %B) {
 ;
 define i32 @constant_array_index_test() {
 	%Array = alloca i32, i32 100
+        call void @external(i32* %Array)
+
 	%P1 = getelementptr i32* %Array, i64 7
 	%P2 = getelementptr i32* %Array, i64 6
 	
@@ -37,6 +46,8 @@ define i32 @constant_array_index_test() {
 	%BREMOVE = load i32* %P1
 	%Val = sub i32 %A, %BREMOVE
 	ret i32 %Val
+; CHECK: @constant_array_index_test
+; CHECK: ret i32 0
 }
 
 ; Test that if two pointers are spaced out by a constant getelementptr, that 
@@ -48,6 +59,8 @@ define i32 @gep_distance_test(i32* %A) {
         %REMOVEv = load i32* %A
         %r = sub i32 %REMOVEu, %REMOVEv
         ret i32 %r
+; CHECK: @gep_distance_test
+; CHECK: ret i32 0
 }
 
 ; Test that if two pointers are spaced out by a constant offset, that they
@@ -60,6 +73,8 @@ define i32 @gep_distance_test2({i32,i32}* %A, i64 %distance) {
 	%REMOVEv = load i32* %A1
         %r = sub i32 %REMOVEu, %REMOVEv
         ret i32 %r
+; CHECK: @gep_distance_test2
+; CHECK: ret i32 0
 }
 
 ; Test that we can do funny pointer things and that distance calc will still 
@@ -68,16 +83,24 @@ define i32 @gep_distance_test3(i32 * %A) {
 	%X = load i32* %A
 	%B = bitcast i32* %A to i8*
 	%C = getelementptr i8* %B, i64 4
-	%Y = load i8* %C
+        store i8 42, i8* %C
-	ret i32 8
+	%Y = load i32* %A
+        %R = sub i32 %X, %Y
+	ret i32 %R
+; CHECK: @gep_distance_test3
+; CHECK: ret i32 0
 }
 
 ; Test that we can disambiguate globals reached through constantexpr geps
 define i32 @constexpr_test() {
    %X = alloca i32
+   call void @external(i32* %X)
+
    %Y = load i32* %X
    store i32 5, i32* getelementptr ({ i32 }* @Global, i64 0, i32 0)
    %REMOVE = load i32* %X
    %retval = sub i32 %Y, %REMOVE
    ret i32 %retval
+; CHECK: @constexpr_test
+; CHECK: ret i32 0
 }