[rustc.git] / src / test / codegen / issue-75525-bounds-checks.rs

// Regression test for #75525, verifies that no bounds checks are generated.

// min-llvm-version: 12.0.0
// compile-flags: -O

#![crate_type = "lib"]

// CHECK-LABEL: @f0
// CHECK-NOT: panic
#[no_mangle]
pub fn f0(idx: usize, buf: &[u8; 10]) -> u8 {
    if idx < 8 { buf[idx + 1] } else { 0 }
}

// CHECK-LABEL: @f1
// CHECK-NOT: panic
#[no_mangle]
pub fn f1(idx: usize, buf: &[u8; 10]) -> u8 {
    if idx > 5 && idx < 8 { buf[idx - 1] } else { 0 }
}

// CHECK-LABEL: @f2
// CHECK-NOT: panic
#[no_mangle]
pub fn f2(idx: usize, buf: &[u8; 10]) -> u8 {
    if idx > 5 && idx < 8 { buf[idx] } else { 0 }
}
Commit	Line	Data
6a06907d XL	1	// Regression test for #75525, verifies that no bounds checks are generated.
	2
	3	// min-llvm-version: 12.0.0
	4	// compile-flags: -O
	5
	6	#![crate_type = "lib"]
	7
	8	// CHECK-LABEL: @f0
	9	// CHECK-NOT: panic
	10	#[no_mangle]
	11	pub fn f0(idx: usize, buf: &[u8; 10]) -> u8 {
	12	if idx < 8 { buf[idx + 1] } else { 0 }
	13	}
	14
	15	// CHECK-LABEL: @f1
	16	// CHECK-NOT: panic
	17	#[no_mangle]
	18	pub fn f1(idx: usize, buf: &[u8; 10]) -> u8 {
	19	if idx > 5 && idx < 8 { buf[idx - 1] } else { 0 }
	20	}
	21
	22	// CHECK-LABEL: @f2
	23	// CHECK-NOT: panic
	24	#[no_mangle]
	25	pub fn f2(idx: usize, buf: &[u8; 10]) -> u8 {
	26	if idx > 5 && idx < 8 { buf[idx] } else { 0 }
	27	}