New testcases to test LICM of call instructions

llvm-svn: 12414

llvm/test/Regression/Transforms/LICM/call_sink_const_function.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | opt -basicaa -licm | llvm-dis | grep -C1 sin | grep Out: 
+declare double %sin(double)
+declare void %foo()
+
+double %test(double %X) {
+	br label %Loop
+
+Loop:
+	call void %foo()    ;; Unknown effects!
+
+	%A = call double %sin(double %X)   ;; Can still hoist/sink call
+	br bool true, label %Loop, label %Out
+
+Out:
+	ret double %A
+}

llvm/test/Regression/Transforms/LICM/call_sink_pure_function.ll

@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | opt -basicaa -licm | llvm-dis | grep -C1 strlen | grep Out: 
+declare int %strlen(sbyte*)
+declare void %foo()
+
+int %test(sbyte* %P) {
+	br label %Loop
+
+Loop:
+	%A = call int %strlen(sbyte* %P)   ;; Can hoist/sink call
+	br bool false, label %Loop, label %Out
+
+Out:
+	ret int %A
+}