[PGO] MST based PGO instrumentation infrastructure

[oota-llvm.git] / test / Transforms / MemCpyOpt / callslot_deref.ll

diff --git a/test/Transforms/MemCpyOpt/callslot_deref.ll b/test/Transforms/MemCpyOpt/callslot_deref.ll
index a1f5ae19d247b1d61ac1dc0103bcc85526a66bd0..4c3e3e86bf38611b2ab64e0175765ca40cdf2fd9 100644 (file)
--- a/test/Transforms/MemCpyOpt/callslot_deref.ll
+++ b/test/Transforms/MemCpyOpt/callslot_deref.ll
@@ -17,10 +17,11 @@ define void @must_remove_memcpy(i8* noalias nocapture dereferenceable(4096) %dst
 }
 
 ; memset touch more bytes than those guaranteed to be dereferenceable
+; We can't remove the memcpy, but we can turn it into an independent memset.
 define void @must_not_remove_memcpy(i8* noalias nocapture dereferenceable(1024) %dst) {
 ; CHECK-LABEL: @must_not_remove_memcpy(
 ; CHECK: call void @llvm.memset.p0i8.i64
-; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64
+; CHECK: call void @llvm.memset.p0i8.i64
   %src = alloca [4096 x i8], align 1
   %p = getelementptr inbounds [4096 x i8], [4096 x i8]* %src, i64 0, i64 0
   call void @llvm.memset.p0i8.i64(i8* %p, i8 0, i64 4096, i32 1, i1 false)