[llvm] 2ae67c9 - [BasicAA] Add range test with multiple indices (NFC)

[Nikita Popov via llvm-commits]

Author: Nikita Popov
Date: 2021-10-24T16:13:03+02:00
New Revision: 2ae67c9684ec3ecc5ae61802528d4a3618bed57a

URL: https://github.com/llvm/llvm-project/commit/2ae67c9684ec3ecc5ae61802528d4a3618bed57a
DIFF: https://github.com/llvm/llvm-project/commit/2ae67c9684ec3ecc5ae61802528d4a3618bed57a.diff

LOG: [BasicAA] Add range test with multiple indices (NFC)

Added: 
    

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

Removed: 
    


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diff  --git a/llvm/test/Analysis/BasicAA/range.ll b/llvm/test/Analysis/BasicAA/range.ll
index 5a3c09b57a0e5..d1847d618e948 100644
--- a/llvm/test/Analysis/BasicAA/range.ll
+++ b/llvm/test/Analysis/BasicAA/range.ll
@@ -178,6 +178,25 @@ define void @zeroext_index([256 x i32]* %s, i8* %q) {
   ret void
 }
 
+; CHECK-LABEL: Function: multiple
+; CHECK: MayAlias: i32* %p, i32* %p.01
+; CHECK: MayAlias: i32* %p, i32* %p.02
+; CHECK: MayAlias: i32* %p.01, i32* %p.02
+; CHECK: NoAlias:  i32* %p.01, i32* %p.2
+; CHECK: MayAlias: i32* %p.02, i32* %p.2
+; CHECK: NoAlias:  i32* %p.01, i32* %p.3
+; TODO: This can be NoAlias.
+; CHECK: MayAlias: i32* %p.02, i32* %p.3
+define void @multiple(i32* %p, i32* %o1_ptr, i32* %o2_ptr) {
+  %o1 = load i32, i32* %o1_ptr, !range !0
+  %o2 = load i32, i32* %o2_ptr, !range !0
+  %p.01 = getelementptr i32, i32* %p, i32 %o1  ; p + [0, 1]
+  %p.02 = getelementptr i32, i32* %p.01, i32 %o2 ; p + [0, 2]
+  %p.2 = getelementptr i32, i32* %p, i32 2
+  %p.3 = getelementptr i32, i32* %p, i32 3
+  ret void
+}
+
 
 !0 = !{ i32 0, i32 2 }
 !1 = !{ i32 0, i32 1 }