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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:11:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:13:23 +0000 |
commit | 20431706a863f92cb37dc512fef6e48d192aaf2c (patch) | |
tree | 2867f13f5fd5437ba628c67d7f87309ccadcd286 /src/test/codegen/slice-iter-len-eq-zero.rs | |
parent | Releasing progress-linux version 1.65.0+dfsg1-2~progress7.99u1. (diff) | |
download | rustc-20431706a863f92cb37dc512fef6e48d192aaf2c.tar.xz rustc-20431706a863f92cb37dc512fef6e48d192aaf2c.zip |
Merging upstream version 1.66.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/test/codegen/slice-iter-len-eq-zero.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/codegen/slice-iter-len-eq-zero.rs b/src/test/codegen/slice-iter-len-eq-zero.rs index fd19e624c..112402825 100644 --- a/src/test/codegen/slice-iter-len-eq-zero.rs +++ b/src/test/codegen/slice-iter-len-eq-zero.rs @@ -1,5 +1,6 @@ // no-system-llvm // compile-flags: -O +// ignore-debug: the debug assertions add extra comparisons #![crate_type = "lib"] type Demo = [u8; 3]; @@ -12,3 +13,16 @@ pub fn slice_iter_len_eq_zero(y: std::slice::Iter<'_, Demo>) -> bool { // CHECK: ret i1 %2 y.len() == 0 } + +// CHECK-LABEL: @array_into_iter_len_eq_zero +#[no_mangle] +pub fn array_into_iter_len_eq_zero(y: std::array::IntoIter<Demo, 123>) -> bool { + // This should be able to just check that the indexes are equal, and not + // need any subtractions or comparisons to handle `start > end`. + + // CHECK-NOT: icmp + // CHECK-NOT: sub + // CHECK: %1 = icmp eq {{i16|i32|i64}} + // CHECK: ret i1 %1 + y.len() == 0 +} |