[llvm] 524ad6b - [BasicAA] Add memset_chk libfunc tests.

[Florian Hahn via llvm-commits]

Author: Florian Hahn
Date: 2021-12-01T14:15:46Z
New Revision: 524ad6babb8ef3d3e5fa97aac9f24a2513e17e2b

URL: https://github.com/llvm/llvm-project/commit/524ad6babb8ef3d3e5fa97aac9f24a2513e17e2b
DIFF: https://github.com/llvm/llvm-project/commit/524ad6babb8ef3d3e5fa97aac9f24a2513e17e2b.diff

LOG: [BasicAA] Add memset_chk libfunc tests.

Added: 
    

Modified: 
    llvm/test/Analysis/BasicAA/libfuncs.ll

Removed: 
    


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diff  --git a/llvm/test/Analysis/BasicAA/libfuncs.ll b/llvm/test/Analysis/BasicAA/libfuncs.ll
index fb86c764b90b..31c4367aef07 100644
--- a/llvm/test/Analysis/BasicAA/libfuncs.ll
+++ b/llvm/test/Analysis/BasicAA/libfuncs.ll
@@ -175,3 +175,37 @@ entry:
   store i8 3, i8* %b.gep.5
   ret i8* %res
 }
+
+declare i8* @__memset_chk(i8* writeonly, i32, i64, i64)
+
+; CHECK-LABEL: Function: test_memset_chk_const_size
+define i8* @test_memset_chk_const_size(i8* noalias %a, i64 %n) {
+; CHECK:       Just Mod (MustAlias):  Ptr: i8* %a	<->  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
+; CHECK-NEXT:  Just Mod:  Ptr: i8* %res	<->  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
+; CHECK-NEXT:  Just Mod:  Ptr: i8* %a.gep.1	<->  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
+; CHECK-NEXT:  Just Mod:  Ptr: i8* %a.gep.5	<->  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
+;
+entry:
+  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 4, i64 %n)
+  %a.gep.1 = getelementptr i8, i8* %a, i32 1
+  store i8 0, i8* %a.gep.1
+  %a.gep.5 = getelementptr i8, i8* %a, i32 5
+  store i8 1, i8* %a.gep.5
+  ret i8* %res
+}
+
+define i8* @test_memset_chk_variable_size(i8* noalias %a, i64 %n.1, i64 %n.2) {
+; CHECK-LABEL: Function: test_memset_chk_variable_size
+; CHECK:       Just Mod (MustAlias):  Ptr: i8* %a	<->  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
+; CHECK-NEXT:  Just Mod:  Ptr: i8* %res	<->  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
+; CHECK-NEXT:  Just Mod:  Ptr: i8* %a.gep.1	<->  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
+; CHECK-NEXT:  Just Mod:  Ptr: i8* %a.gep.5	<->  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
+;
+entry:
+  %res = tail call i8* @__memset_chk(i8* %a, i32 0, i64 %n.1, i64 %n.2)
+  %a.gep.1 = getelementptr i8, i8* %a, i32 1
+  store i8 0, i8* %a.gep.1
+  %a.gep.5 = getelementptr i8, i8* %a, i32 5
+  store i8 1, i8* %a.gep.5
+  ret i8* %res
+}