[asan] workaround for PR16277: don't instrument AllocaInstr with alignment more than...

[oota-llvm.git] / test / Instrumentation / AddressSanitizer / basic.ll

diff --git a/test/Instrumentation/AddressSanitizer/basic.ll b/test/Instrumentation/AddressSanitizer/basic.ll
index fb32e704af86cefa96309a2ded9c6c85ecc54aa1..6002b9e897d7cb890ee0e6a6ed37f1fad7fabef4 100644 (file)
--- a/test/Instrumentation/AddressSanitizer/basic.ll
+++ b/test/Instrumentation/AddressSanitizer/basic.ll
@@ -89,6 +89,25 @@ entry:
 ; CHECK-NOT: = alloca
 ; CHECK: ret void
 
+; Check that asan does not touch allocas with alignment > 32.
+define void @alloca_alignment_test() sanitize_address {
+entry:
+  %x = alloca [10 x i8], align 64
+  %y = alloca [10 x i8], align 128
+  %z = alloca [10 x i8], align 256
+  call void @alloca_test_use([10 x i8]* %x)
+  call void @alloca_test_use([10 x i8]* %y)
+  call void @alloca_test_use([10 x i8]* %z)
+  ret void
+}
+
+; CHECK: define void @alloca_alignment_test()
+; CHECK: = alloca{{.*}} align 64
+; CHECK: = alloca{{.*}} align 128
+; CHECK: = alloca{{.*}} align 256
+; CHECK: ret void
+
+
 define void @LongDoubleTest(x86_fp80* nocapture %a) nounwind uwtable sanitize_address {
 entry:
     store x86_fp80 0xK3FFF8000000000000000, x86_fp80* %a, align 16