diff options
Diffstat (limited to 'src/test/codegen/slice-as_chunks.rs')
-rw-r--r-- | src/test/codegen/slice-as_chunks.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/test/codegen/slice-as_chunks.rs b/src/test/codegen/slice-as_chunks.rs new file mode 100644 index 000000000..48e3f73fc --- /dev/null +++ b/src/test/codegen/slice-as_chunks.rs @@ -0,0 +1,33 @@ +// no-system-llvm +// compile-flags: -O +// only-64bit (because the LLVM type of i64 for usize shows up) +// ignore-debug: the debug assertions get in the way + +#![crate_type = "lib"] +#![feature(slice_as_chunks)] + +// CHECK-LABEL: @chunks4 +#[no_mangle] +pub fn chunks4(x: &[u8]) -> &[[u8; 4]] { + // CHECK-NEXT: start: + // CHECK-NEXT: lshr i64 %x.1, 2 + // CHECK-NOT: shl + // CHECK-NOT: mul + // CHECK-NOT: udiv + // CHECK-NOT: urem + // CHECK: ret + x.as_chunks().0 +} + +// CHECK-LABEL: @chunks4_with_remainder +#[no_mangle] +pub fn chunks4_with_remainder(x: &[u8]) -> (&[[u8; 4]], &[u8]) { + // CHECK: and i64 %x.1, -4 + // CHECK: and i64 %x.1, 3 + // CHECK: lshr exact + // CHECK-NOT: mul + // CHECK-NOT: udiv + // CHECK-NOT: urem + // CHECK: ret + x.as_chunks() +} |