--- /dev/null
+; RUN: opt < %s -correlated-propagation -S | FileCheck %s
+
+define void @test1(i8* %ptr) {
+; CHECK: test1
+ %A = load i8* %ptr
+ br label %bb
+bb:
+ icmp ne i8* %ptr, null
+; CHECK-NOT: icmp
+ ret void
+}
+
+define void @test2(i8* %ptr) {
+; CHECK: test2
+ store i8 0, i8* %ptr
+ br label %bb
+bb:
+ icmp ne i8* %ptr, null
+; CHECK-NOT: icmp
+ ret void
+}
+
+define void @test3() {
+; CHECK: test3
+ %ptr = alloca i8
+ br label %bb
+bb:
+ icmp ne i8* %ptr, null
+; CHECK-NOT: icmp
+ ret void
+}
+
+declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
+define void @test4(i8* %dest, i8* %src) {
+; CHECK: test4
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i32 1, i1 false)
+ br label %bb
+bb:
+ icmp ne i8* %dest, null
+ icmp ne i8* %src, null
+; CHECK-NOT: icmp
+ ret void
+}
+
+declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
+define void @test5(i8* %dest, i8* %src) {
+; CHECK: test5
+ call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i32 1, i1 false)
+ br label %bb
+bb:
+ icmp ne i8* %dest, null
+ icmp ne i8* %src, null
+; CHECK-NOT: icmp
+ ret void
+}
+
+declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i32, i1)
+define void @test6(i8* %dest) {
+; CHECK: test6
+ call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i32 1, i1 false)
+ br label %bb
+bb:
+ icmp ne i8* %dest, null
+; CHECK-NOT: icmp
+ ret void
+}
+
+define void @test7(i8* %dest, i8* %src, i32 %len) {
+; CHECK: test7
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i32 1, i1 false)
+ br label %bb
+bb:
+ %KEEP1 = icmp ne i8* %dest, null
+; CHECK: KEEP1
+ %KEEP2 = icmp ne i8* %src, null
+; CHECK: KEEP2
+ ret void
+}
+
+declare void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) *, i8 addrspace(1) *, i32, i32, i1)
+define void @test8(i8 addrspace(1) * %dest, i8 addrspace(1) * %src) {
+; CHECK: test8
+ call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) * %dest, i8 addrspace(1) * %src, i32 1, i32 1, i1 false)
+ br label %bb
+bb:
+ %KEEP1 = icmp ne i8 addrspace(1) * %dest, null
+; CHECK: KEEP1
+ %KEEP2 = icmp ne i8 addrspace(1) * %src, null
+; CHECK: KEEP2
+ ret void
+}
+
+define void @test9(i8* %dest, i8* %src) {
+; CHECK: test9
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i32 1, i1 true)
+ br label %bb
+bb:
+ %KEEP1 = icmp ne i8* %dest, null
+; CHECK: KEEP1
+ %KEEP2 = icmp ne i8* %src, null
+; CHECK: KEEP2
+ ret void
+}