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40 lines
870 B
Rust
40 lines
870 B
Rust
//@ compile-flags: -O
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//@ only-x86_64
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#![crate_type = "rlib"]
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#![feature(asm_unwind)]
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use std::arch::asm;
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#[no_mangle]
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pub extern "C" fn panicky() {}
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struct Foo;
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impl Drop for Foo {
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fn drop(&mut self) {
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println!();
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}
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}
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// CHECK-LABEL: @asm_may_unwind
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#[no_mangle]
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pub unsafe fn asm_may_unwind() {
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let _m = Foo;
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// CHECK: invoke void asm sideeffect alignstack inteldialect unwind ""
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asm!("", options(may_unwind));
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}
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// CHECK-LABEL: @asm_with_result_may_unwind
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#[no_mangle]
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pub unsafe fn asm_with_result_may_unwind() -> u64 {
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let _m = Foo;
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let res: u64;
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// CHECK: [[RES:%[0-9]+]] = invoke i64 asm sideeffect alignstack inteldialect unwind
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// CHECK-NEXT: to label %[[NORMALBB:[a-b0-9]+]]
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asm!("mov {}, 1", out(reg) res, options(may_unwind));
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// CHECK: [[NORMALBB]]:
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// CHECK: ret i64 [[RES:%[0-9]+]]
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res
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}
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