Add testcases for FastDLE.

llvm-svn: 40449

llvm/test/Transforms/DeadLoadElimination/dg.exp

@@ -0,0 +1,3 @@
+load_lib llvm.exp
+
+RunLLVMTests [lsort [glob -nocomplain $srcdir/$subdir/*.{ll,llx,c,cpp,tr}]]

llvm/test/Transforms/DeadLoadElimination/simple.ll

@@ -0,0 +1,7 @@
+; RUN: llvm-as < %s | opt -fdle | llvm-dis | not grep DEAD
+
+define void @test(i32* %Q, i32* %P) {
+  %A = load i32* %Q
+	%DEAD = load i32* %Q		; <i32> [#uses=1]
+	ret void
+}

llvm/test/Transforms/DeadLoadElimination/volatile.ll

@@ -0,0 +1,7 @@
+; RUN: llvm-as < %s | opt -fdle | llvm-dis | grep NOTDEAD
+
+define void @test(i32* %Q, i32* %P) {
+  %A = load i32* %Q
+	%NOTDEAD = volatile load i32* %Q		; <i32> [#uses=1]
+	ret void
+}