summaryrefslogtreecommitdiffstats
path: root/tests/mir-opt/separate_const_switch.rs
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:19:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:19:03 +0000
commit64d98f8ee037282c35007b64c2649055c56af1db (patch)
tree5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/mir-opt/separate_const_switch.rs
parentAdding debian version 1.67.1+dfsg1-1. (diff)
downloadrustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz
rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/mir-opt/separate_const_switch.rs')
-rw-r--r--tests/mir-opt/separate_const_switch.rs31
1 files changed, 31 insertions, 0 deletions
diff --git a/tests/mir-opt/separate_const_switch.rs b/tests/mir-opt/separate_const_switch.rs
new file mode 100644
index 000000000..c809e5629
--- /dev/null
+++ b/tests/mir-opt/separate_const_switch.rs
@@ -0,0 +1,31 @@
+#![feature(control_flow_enum)]
+#![feature(try_trait_v2)]
+
+use std::ops::ControlFlow;
+
+// EMIT_MIR separate_const_switch.too_complex.SeparateConstSwitch.diff
+fn too_complex(x: Result<i32, usize>) -> Option<i32> {
+ // The pass should break the outer match into
+ // two blocks that only have one parent each.
+ // Parents are one of the two branches of the first
+ // match, so a later pass can propagate constants.
+ match {
+ match x {
+ Ok(v) => ControlFlow::Continue(v),
+ Err(r) => ControlFlow::Break(r),
+ }
+ } {
+ ControlFlow::Continue(v) => Some(v),
+ ControlFlow::Break(r) => None,
+ }
+}
+
+// EMIT_MIR separate_const_switch.identity.SeparateConstSwitch.diff
+fn identity(x: Result<i32, i32>) -> Result<i32, i32> {
+ Ok(x?)
+}
+
+fn main() {
+ too_complex(Ok(0));
+ identity(Ok(0));
+}