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| author | Scott McMurray <scottmcm@users.noreply.github.com> | 2020-11-06 13:51:44 -0800 |
|---|---|---|
| committer | Scott McMurray <scottmcm@users.noreply.github.com> | 2021-01-15 21:24:38 -0800 |
| commit | ae4b5a21e62fe30a924c45e2734880c4de844446 (patch) | |
| tree | 55a4ec0ac1e24477ee364ee40352d8c98aaa4670 /src/test/codegen | |
| parent | 6c869d34ae2d87d21db9892d4dc088639bcbe041 (diff) | |
| download | rust-ae4b5a21e62fe30a924c45e2734880c4de844446.tar.gz rust-ae4b5a21e62fe30a924c45e2734880c4de844446.zip | |
Add `as_rchunks` (and friends) to slices
Diffstat (limited to 'src/test/codegen')
| -rw-r--r-- | src/test/codegen/slice-as_chunks.rs | 32 |
1 files changed, 32 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 00000000000..7b857879eea --- /dev/null +++ b/src/test/codegen/slice-as_chunks.rs @@ -0,0 +1,32 @@ +// no-system-llvm +// compile-flags: -O +// only-64bit (because the LLVM type of i64 for usize shows up) + +#![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() +} |