projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| f2b60f7d FG |
1 | // compile-flags: -O |
| 2 | // only-x86_64 | |
| 3 | // ignore-debug: the debug assertions get in the way | |
| 4 | ||
| 5 | #![crate_type = "lib"] | |
| 6 | ||
| 7 | use std::alloc::Layout; | |
| 8 | ||
| 9 | type RGB48 = [u16; 3]; | |
| 10 | ||
| 11 | // CHECK-LABEL: @layout_array_rgb48 | |
| 12 | #[no_mangle] | |
| 13 | pub fn layout_array_rgb48(n: usize) -> Layout { | |
| 14 | // CHECK-NOT: llvm.umul.with.overflow.i64 | |
| 15 | // CHECK: icmp ugt i64 %n, 1537228672809129301 | |
| 16 | // CHECK-NOT: llvm.umul.with.overflow.i64 | |
| 17 | // CHECK: mul nuw nsw i64 %n, 6 | |
| 18 | // CHECK-NOT: llvm.umul.with.overflow.i64 | |
| 19 | Layout::array::<RGB48>(n).unwrap() | |
| 20 | } | |
| 21 | ||
| 22 | // CHECK-LABEL: @layout_array_i32 | |
| 23 | #[no_mangle] | |
| 24 | pub fn layout_array_i32(n: usize) -> Layout { | |
| 25 | // CHECK-NOT: llvm.umul.with.overflow.i64 | |
| 26 | // CHECK: icmp ugt i64 %n, 2305843009213693951 | |
| 27 | // CHECK-NOT: llvm.umul.with.overflow.i64 | |
| 28 | // CHECK: shl nuw nsw i64 %n, 2 | |
| 29 | // CHECK-NOT: llvm.umul.with.overflow.i64 | |
| 30 | Layout::array::<i32>(n).unwrap() | |
| 31 | } |