Tests for changes made in r45356, where IPO optimizations would drop

collector algorithms.

llvm-svn: 45357

llvm/test/CodeGen/Generic/GC/argpromotion.ll

@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | opt -anders-aa -argpromotion
+
+declare void @llvm.gcroot(i8**, i8*)
+
+define i32 @g() {
+entry:
+	%var = alloca i32
+	store i32 1, i32* %var
+	%x = call i32 @f(i32* %var)
+	ret i32 %x
+}
+
+define internal i32 @f(i32* %xp) gc "example" {
+entry:
+	%var = alloca i8*
+	call void @llvm.gcroot(i8** %var, i8* null)
+	%x = load i32* %xp
+	ret i32 %x
+}

llvm/test/CodeGen/Generic/GC/deadargelim.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | opt -deadargelim
+
+declare void @llvm.gcroot(i8**, i8*)
+
+define void @g() {
+entry:
+	call void @f(i32 0)
+	ret void
+}
+
+define internal void @f(i32 %unused) gc "example" {
+entry:
+	%var = alloca i8*
+	call void @llvm.gcroot(i8** %var, i8* null)
+	ret void
+}