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-rw-r--r--llvm/test/Instrumentation/DataFlowSanitizer/external_mask.ll14
1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/test/Instrumentation/DataFlowSanitizer/external_mask.ll b/llvm/test/Instrumentation/DataFlowSanitizer/external_mask.ll
new file mode 100644
index 00000000000..db4c14ed958
--- /dev/null
+++ b/llvm/test/Instrumentation/DataFlowSanitizer/external_mask.ll
@@ -0,0 +1,14 @@
+; RUN: opt < %s -dfsan -S | FileCheck %s
+target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
+target triple = "aarch64-unknown-linux-gnu"
+
+define i32 @test(i32 %a, i32* nocapture readonly %b) #0 {
+; CHECK: @"dfs$test"
+; CHECK: %[[RV:.*]] load{{.*}}__dfsan_shadow_ptr_mask
+; CHECK: ptrtoint i32* {{.*}} to i64
+; CHECK: and {{.*}}%[[RV:.*]]
+; CHECK: mul i64
+ %1 = load i32, i32* %b, align 4
+ %2 = add nsw i32 %1, %a
+ ret i32 %2
+}
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