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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:50 +0000 |
commit | 2e00214b3efbdfeefaa0fe9e8b8fd519de7adc35 (patch) | |
tree | d325add32978dbdc1db975a438b3a77d571b1ab8 /tests/mir-opt/copy-prop/dead_stores_better.rs | |
parent | Releasing progress-linux version 1.68.2+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-2e00214b3efbdfeefaa0fe9e8b8fd519de7adc35.tar.xz rustc-2e00214b3efbdfeefaa0fe9e8b8fd519de7adc35.zip |
Merging upstream version 1.69.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/mir-opt/copy-prop/dead_stores_better.rs')
-rw-r--r-- | tests/mir-opt/copy-prop/dead_stores_better.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tests/mir-opt/copy-prop/dead_stores_better.rs b/tests/mir-opt/copy-prop/dead_stores_better.rs new file mode 100644 index 000000000..8465b3c98 --- /dev/null +++ b/tests/mir-opt/copy-prop/dead_stores_better.rs @@ -0,0 +1,21 @@ +// This is a copy of the `dead_stores_79191` test, except that we turn on DSE. This demonstrates +// that that pass enables this one to do more optimizations. + +// unit-test: CopyProp +// compile-flags: -Zmir-enable-passes=+DeadStoreElimination + +fn id<T>(x: T) -> T { + x +} + +// EMIT_MIR dead_stores_better.f.CopyProp.after.mir +pub fn f(mut a: usize) -> usize { + let b = a; + a = 5; + a = b; + id(a) +} + +fn main() { + f(0); +} |