[llvm] 005b715 - [NFC] Added test for PR49927

[Dávid Bolvanský via llvm-commits]

Author: Dávid Bolvanský
Date: 2021-10-13T12:15:57+02:00
New Revision: 005b715b543e782321408c5ec9f30644161c18e0

URL: https://github.com/llvm/llvm-project/commit/005b715b543e782321408c5ec9f30644161c18e0
DIFF: https://github.com/llvm/llvm-project/commit/005b715b543e782321408c5ec9f30644161c18e0.diff

LOG: [NFC] Added test for PR49927

Added: 
    

Modified: 
    llvm/test/Transforms/DeadStoreElimination/stores-of-existing-values.ll

Removed: 
    


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diff  --git a/llvm/test/Transforms/DeadStoreElimination/stores-of-existing-values.ll b/llvm/test/Transforms/DeadStoreElimination/stores-of-existing-values.ll
index 77f006a524547..6c4c16a94a5f0 100644
--- a/llvm/test/Transforms/DeadStoreElimination/stores-of-existing-values.ll
+++ b/llvm/test/Transforms/DeadStoreElimination/stores-of-existing-values.ll
@@ -282,3 +282,17 @@ bb3:
   store i32 0, i32* %P
   ret void
 }
+
+define void @pr49927(i32* %q, i32* %p) {
+; CHECK-LABEL: @pr49927(
+; CHECK-NEXT:    [[V:%.*]] = load i32, i32* [[P:%.*]], align 4
+; CHECK-NEXT:    store i32 [[V]], i32* [[Q:%.*]], align 4
+; CHECK-NEXT:    store i32 [[V]], i32* [[P]], align 4
+; CHECK-NEXT:    ret void
+;
+  %v = load i32, i32* %p, align 4
+  store i32 %v, i32* %q, align 4
+  ; FIXME: this store can be eliminated
+  store i32 %v, i32* %p, align 4
+  ret void
+}