35 lines
1.0 KiB
Rust
35 lines
1.0 KiB
Rust
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// compile-flags: -O -C no-prepopulate-passes
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// min-llvm-version: 15.0 (because we're using opaque pointers)
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#![crate_type = "lib"]
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#![feature(core_intrinsics)]
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use std::intrinsics::offset;
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// CHECK-LABEL: ptr @offset_zst
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// CHECK-SAME: (ptr noundef %p, [[SIZE:i[0-9]+]] noundef %d)
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#[no_mangle]
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pub unsafe fn offset_zst(p: *const (), d: usize) -> *const () {
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// CHECK-NOT: getelementptr
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// CHECK: ret ptr %p
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offset(p, d)
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}
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// CHECK-LABEL: ptr @offset_isize
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// CHECK-SAME: (ptr noundef %p, [[SIZE]] noundef %d)
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#[no_mangle]
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pub unsafe fn offset_isize(p: *const u32, d: isize) -> *const u32 {
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// CHECK: %[[R:.*]] = getelementptr inbounds i32, ptr %p, [[SIZE]] %d
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// CHECK-NEXT: ret ptr %[[R]]
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offset(p, d)
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}
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// CHECK-LABEL: ptr @offset_usize
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// CHECK-SAME: (ptr noundef %p, [[SIZE]] noundef %d)
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#[no_mangle]
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pub unsafe fn offset_usize(p: *const u64, d: usize) -> *const u64 {
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// CHECK: %[[R:.*]] = getelementptr inbounds i64, ptr %p, [[SIZE]] %d
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// CHECK-NEXT: ret ptr %[[R]]
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offset(p, d)
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}
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