[AST][Tests] Clarify what each test is doing

llvm-svn: 340100

1 files changed, 23 insertions, 20 deletions

diff --git a/llvm/test/Analysis/AliasSet/argmemonly.ll b/llvm/test/Analysis/AliasSet/argmemonly.ll
index 4cc3614a29a..96e1c6ce7d0 100644
--- a/llvm/test/Analysis/AliasSet/argmemonly.ll
+++ b/llvm/test/Analysis/AliasSet/argmemonly.ll
@@ -3,34 +3,39 @@
 @s = global i8 1, align 1
 @d = global i8 2, align 1
 
-; CHECK: Alias sets for function 'test1':
-; CHECK-NEXT: Alias Set Tracker: 3 alias sets for 2 pointer values.
+; CHECK: Alias sets for function 'test_alloca_argmemonly':
+; CHECK-NEXT: Alias Set Tracker: 2 alias sets for 1 pointer values.
 ; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod       Pointers: (i8* %a, 1)
 ; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] may alias, Mod/Ref   
 ; CHECK-NEXT: 1 Unknown instructions:   call void @my_memcpy(i8* %d, i8* %s, i64 1)
-; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod       Pointers: (i8* %b, 1)
-define void @test1(i8* %s, i8* %d) {
+define void @test_alloca_argmemonly(i8* %s, i8* %d) {
 entry:
   %a = alloca i8, align 1
-  %b = alloca i8, align 1
   store i8 1, i8* %a, align 1
   call void @my_memcpy(i8* %d, i8* %s, i64 1)
-  store i8 1, i8* %b, align 1
   ret void
 }
 
-; CHECK: Alias sets for function 'test3':
-; CHECK-NEXT: Alias Set Tracker: 3 alias sets for 2 pointer values.
+; CHECK: Alias sets for function 'test_readonly_arg'
+; CHECK-NEXT: Alias Set Tracker: 1 alias sets for 1 pointer values.
+; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 2] may alias, Mod/Ref       Pointers: (i8* %s, 1)
+; CHECK-NEXT: 1 Unknown instructions:   call void @my_memcpy(i8* %d, i8* %s, i64 1)
+define i8 @test_readonly_arg(i8* noalias %s, i8* noalias %d) {
+entry:
+  call void @my_memcpy(i8* %d, i8* %s, i64 1)
+  %ret = load i8, i8* %s
+  ret i8 %ret
+}
+
+; CHECK: Alias sets for function 'test_noalias_argmemonly':
+; CHECK-NEXT: Alias Set Tracker: 2 alias sets for 1 pointer values.
 ; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod       Pointers: (i8* %a, 1)
 ; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] may alias, Mod/Ref   
 ; CHECK-NEXT:  Unknown instructions:   call void @my_memmove(i8* %d, i8* %s, i64 1)
-
-; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] must alias, Mod       Pointers: (i8* %b, 1)
-define void @test3(i8* noalias %a, i8* noalias %b, i8* %s, i8* %d) {
+define void @test_noalias_argmemonly(i8* noalias %a, i8* %s, i8* %d) {
 entry:
   store i8 1, i8* %a, align 1
   call void @my_memmove(i8* %d, i8* %s, i64 1)
-  store i8 1, i8* %b, align 1
   ret void
 }
 
@@ -46,11 +51,11 @@ entry:
   ret void
 }
 
-; CHECK: Alias sets for function 'test6':
+; CHECK: Alias sets for function 'test_argcollapse':
 ; CHECK-NEXT: Alias Set Tracker: 1 alias sets for 2 pointer values.
 ; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 3] may alias, Mod/Ref Pointers: (i8* %a, 1), (i8* %b, 1)
 ; CHECK-NEXT: 1 Unknown instructions: call void @my_memmove(i8* %b, i8* %a, i64 1)
-define void @test6(i8* noalias %a, i8* noalias %b) {
+define void @test_argcollapse(i8* noalias %a, i8* noalias %b) {
 entry:
   store i8 1, i8* %a, align 1
   call void @my_memmove(i8* %b, i8* %a, i64 1)
@@ -58,17 +63,15 @@ entry:
   ret void
 }
 
-; CHECK: Alias sets for function 'test7':
-; CHECK-NEXT: Alias Set Tracker: 1 alias sets for 2 pointer values.
-; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 3] may alias, Mod/Ref Pointers: (i8* %a, 1), (i8* %b, 1)
+; CHECK: Alias sets for function 'test_memcpy1':
+; CHECK-NEXT: Alias Set Tracker: 1 alias sets for 0 pointer values.
+; CHECK-NEXT: AliasSet[0x{{[0-9a-f]+}}, 1] may alias, Mod/Ref 
 ; CHECK-NEXT: 2 Unknown instructions: call void @my_memcpy(i8* %b, i8* %a, i64 1),   call void @my_memcpy(i8* %a, i8* %b, i64 1)
 
-define void @test7(i8* noalias %a, i8* noalias %b) {
+define void @test_memcpy1(i8* noalias %a, i8* noalias %b) {
 entry:
-  store i8 1, i8* %a, align 1
   call void @my_memcpy(i8* %b, i8* %a, i64 1)
   call void @my_memcpy(i8* %a, i8* %b, i64 1)
-  store i8 1, i8* %b, align 1
   ret void
 }