[dfsan] Add a test case of storing zero

This covers a branch in storeShadow. Reviewed-by: morehouse Differential Revision: https://reviews.llvm.org/D92632
2020-12-04 05:39:37 +00:00 · 2020-12-04 05:39:37 +00:00 · fa4c3f70ff
parent a366188d80
commit fa4c3f70ff
1 changed files with 6 additions and 0 deletions
--- a/llvm/test/Instrumentation/DataFlowSanitizer/store.ll
+++ b/llvm/test/Instrumentation/DataFlowSanitizer/store.ll
@ -158,3 +158,9 @@ define void @store64(i64 %v, i64* %p) {
  store i64 %v, i64* %p
  ret void
 }
+
+define void @store_zero(i32* %p) {
+  ;  NO_COMBINE_PTR_LABEL: store i64 0, i64* {{.*}}, align 2
+  store i32 0, i32* %p
+  ret void
+}