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00f4daa276
This skips emitting extra arguments at every callsite (of which there can be many). For a librustc_driver build with overflow checks enabled, this cuts 0.7MB from the resulting binary.
15 lines
565 B
Rust
15 lines
565 B
Rust
//@ compile-flags: -Zmir-enable-passes=+Inline,+GVN --crate-type lib
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//@ revisions: ASSERT NOASSERT
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//@[ASSERT] compile-flags: -Coverflow-checks=on
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//@[NOASSERT] compile-flags: -Coverflow-checks=off
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// CHECK-LABEL: define{{.*}} @assertion
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// ASSERT: call void @{{.*4core9panicking11panic_const24panic_const_add_overflow}}
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// NOASSERT: ret i8 0
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#[no_mangle]
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pub fn assertion() -> u8 {
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// Optimized MIR will replace this `CheckedBinaryOp` by `const (0, true)`.
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// Verify that codegen does or does not emit the panic.
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<u8 as std::ops::Add>::add(255, 1)
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}
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