Added codegen tests for different forms of Option::or

tests/codegen-llvm/issues/multiple-option-or-permutations.rs

@@ -0,0 +1,155 @@
+// Tests output of multiple permutations of `Option::or`
+//@ compile-flags: -Copt-level=3 -Zmerge-functions=disabled
+
+#![crate_type = "lib"]
+
+// CHECK-LABEL: @or_match_u8
+#[no_mangle]
+pub fn or_match_u8(opta: Option<u8>, optb: Option<u8>) -> Option<u8> {
+    // CHECK: start:
+    // CHECK-NEXT: or i1 %0
+    // CHECK-NEXT: select i1 %0
+    // CHECK-NEXT: insertvalue { i1, i8 }
+    // CHECK-NEXT: insertvalue { i1, i8 }
+    // ret { i1, i8 }
+    match opta {
+        Some(x) => Some(x),
+        None => optb,
+    }
+}
+
+// CHECK-LABEL: @or_match_alt_u8
+#[no_mangle]
+pub fn or_match_alt_u8(opta: Option<u8>, optb: Option<u8>) -> Option<u8> {
+    // CHECK: start:
+    // CHECK-NEXT: select i1
+    // CHECK-NEXT: or i1
+    // CHECK-NEXT: insertvalue { i1, i8 }
+    // CHECK-NEXT: insertvalue { i1, i8 }
+    // ret { i1, i8 }
+    match opta {
+        Some(_) => opta,
+        None => optb,
+    }
+}
+
+// CHECK-LABEL: @option_or_u8
+#[no_mangle]
+pub fn option_or_u8(opta: Option<u8>, optb: Option<u8>) -> Option<u8> {
+    // CHECK: start:
+    // CHECK-NEXT: select i1
+    // CHECK-NEXT: or i1
+    // CHECK-NEXT: insertvalue { i1, i8 }
+    // CHECK-NEXT: insertvalue { i1, i8 }
+    // ret { i1, i8 }
+    opta.or(optb)
+}
+
+// CHECK-LABEL: @if_some_u8
+#[no_mangle]
+pub fn if_some_u8(opta: Option<u8>, optb: Option<u8>) -> Option<u8> {
+    // CHECK: start:
+    // CHECK-NEXT: select i1
+    // CHECK-NEXT: or i1
+    // CHECK-NEXT: insertvalue { i1, i8 }
+    // CHECK-NEXT: insertvalue { i1, i8 }
+    // ret { i1, i8 }
+    if opta.is_some() { opta } else { optb }
+}
+
+// CHECK-LABEL: @or_match_slice_u8
+#[no_mangle]
+pub fn or_match_slice_u8(opta: Option<[u8; 1]>, optb: Option<[u8; 1]>) -> Option<[u8; 1]> {
+    // CHECK: start:
+    // CHECK-NEXT: trunc i16 %0 to i1
+    // CHECK-NEXT: select i1 %2, i16 %0, i16 %1
+    // ret i16
+    match opta {
+        Some(x) => Some(x),
+        None => optb,
+    }
+}
+
+// CHECK-LABEL: @or_match_slice_alt_u8
+#[no_mangle]
+pub fn or_match_slice_alt_u8(opta: Option<[u8; 1]>, optb: Option<[u8; 1]>) -> Option<[u8; 1]> {
+    // CHECK: start:
+    // CHECK-NEXT: trunc i16 %0 to i1
+    // CHECK-NEXT: select i1 %2, i16 %0, i16 %1
+    // ret i16
+    match opta {
+        Some(_) => opta,
+        None => optb,
+    }
+}
+
+// CHECK-LABEL: @option_or_slice_u8
+#[no_mangle]
+pub fn option_or_slice_u8(opta: Option<[u8; 1]>, optb: Option<[u8; 1]>) -> Option<[u8; 1]> {
+    // CHECK: start:
+    // CHECK-NEXT: trunc i16 %0 to i1
+    // CHECK-NEXT: select i1 %2, i16 %0, i16 %1
+    // ret i16
+    opta.or(optb)
+}
+
+// CHECK-LABEL: @if_some_slice_u8
+#[no_mangle]
+pub fn if_some_slice_u8(opta: Option<[u8; 1]>, optb: Option<[u8; 1]>) -> Option<[u8; 1]> {
+    // CHECK: start:
+    // CHECK-NEXT: trunc i16 %0 to i1
+    // CHECK-NEXT: select i1 %2, i16 %0, i16 %1
+    // ret i16
+    if opta.is_some() { opta } else { optb }
+}
+
+pub struct Test {
+    _a: u8,
+    _b: u8,
+}
+
+// CHECK-LABEL: @or_match_type
+#[no_mangle]
+pub fn or_match_type(opta: Option<Test>, optb: Option<Test>) -> Option<Test> {
+    // CHECK: start:
+    // CHECK-NEXT: trunc i24 %0 to i1
+    // CHECK-NEXT: select i1 %2, i24 %0, i24 %1
+    // ret i24
+    match opta {
+        Some(x) => Some(x),
+        None => optb,
+    }
+}
+
+// CHECK-LABEL: @or_match_alt_type
+#[no_mangle]
+pub fn or_match_alt_type(opta: Option<Test>, optb: Option<Test>) -> Option<Test> {
+    // CHECK: start:
+    // CHECK-NEXT: trunc i24 %0 to i1
+    // CHECK-NEXT: select i1 %2, i24 %0, i24 %1
+    // ret i24
+    match opta {
+        Some(_) => opta,
+        None => optb,
+    }
+}
+
+// CHECK-LABEL: @option_or_type
+#[no_mangle]
+pub fn option_or_type(opta: Option<Test>, optb: Option<Test>) -> Option<Test> {
+    // CHECK: start:
+    // CHECK-NEXT: trunc i24 %0 to i1
+    // CHECK-NEXT: select i1 %2, i24 %0, i24 %1
+    // ret i24
+    opta.or(optb)
+}
+
+// CHECK-LABEL: @if_some_type
+#[no_mangle]
+pub fn if_some_type(opta: Option<Test>, optb: Option<Test>) -> Option<Test> {
+    // CHECK: start:
+    // CHECK-NEXT: trunc i24 %0 to i1
+    // CHECK-NEXT: select i1 %2, i24 %0, i24 %1
+    // ret i24
+    if opta.is_some() { opta } else { optb }
+}