From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/mir-opt/basic_assignment.rs | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 src/test/mir-opt/basic_assignment.rs (limited to 'src/test/mir-opt/basic_assignment.rs') diff --git a/src/test/mir-opt/basic_assignment.rs b/src/test/mir-opt/basic_assignment.rs new file mode 100644 index 000000000..ac350271e --- /dev/null +++ b/src/test/mir-opt/basic_assignment.rs @@ -0,0 +1,24 @@ +// this tests move up progration, which is not yet implemented + +// EMIT_MIR basic_assignment.main.SimplifyCfg-initial.after.mir + +// Check codegen for assignments (`a = b`) where the left-hand-side is +// not yet initialized. Assignments tend to be absent in simple code, +// so subtle breakage in them can leave a quite hard-to-find trail of +// destruction. + +fn main() { + let nodrop_x = false; + let nodrop_y; + + // Since boolean does not require drop, this can be a simple + // assignment: + nodrop_y = nodrop_x; + + let drop_x: Option> = None; + let drop_y; + + // Since the type of `drop_y` has drop, we generate a `replace` + // terminator: + drop_y = drop_x; +} -- cgit v1.2.3