bd6a7b69ce
This improves code size in all tests by about 1% and up to 5% in some cases, likely because LLVM can better reason about inline bounds checks.
57 строки
1,5 КиБ
Go
57 строки
1,5 КиБ
Go
package runtime
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// trap is a compiler hint that this function cannot be executed. It is
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// translated into either a trap instruction or a call to abort().
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//go:export llvm.trap
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func trap()
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// Builtin function panic(msg), used as a compiler intrinsic.
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func _panic(message interface{}) {
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printstring("panic: ")
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printitf(message)
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printnl()
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abort()
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}
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// Cause a runtime panic, which is (currently) always a string.
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func runtimePanic(msg string) {
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printstring("panic: runtime error: ")
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println(msg)
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abort()
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}
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// Try to recover a panicking goroutine.
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func _recover() interface{} {
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// Deferred functions are currently not executed during panic, so there is
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// no way this can return anything besides nil.
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return nil
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}
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// Panic when trying to dereference a nil pointer.
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func nilpanic() {
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runtimePanic("nil pointer dereference")
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}
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// Panic when trying to acces an array or slice out of bounds.
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func lookuppanic() {
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runtimePanic("index out of range")
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}
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// Panic when trying to slice a slice out of bounds.
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func slicepanic() {
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runtimePanic("slice out of range")
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}
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// Check for bounds in *ssa.MakeSlice.
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func sliceBoundsCheckMake(length, capacity uintptr, max uintptr) {
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if length > capacity || capacity > max {
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runtimePanic("slice size out of range")
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}
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}
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// Check for bounds in *ssa.MakeSlice. Supports 64-bit indexes.
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func sliceBoundsCheckMake64(length, capacity uint64, max uintptr) {
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if length > capacity || capacity > uint64(max) {
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runtimePanic("slice size out of range")
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}
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}
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