With the option -sil-print-debuginfo the printing of debug locations and scopes can be enabled.
I made the default for the option “false”, because in 99% of the time I don’t need the debug info in the printed SIL and I prefer better readability.
Strict aliasing only applies to memory operations that use strict
addresses. The optimizer needs to be aware of this flag. Uses of raw
addresses should not have their address substituted with a strict
address.
Also add Builtin.LoadRaw which will be used by raw pointer loads.
1) handle cases where the tuple_extract is not in the same basic block as the init call. This is not a correctness issue, but might miss some opportunities.
2) bail if there are multiple tuple_extract. This is a correctness issue, but a theoretical one. I don't think that in reality we will ever get multiple tuple_extracts out of SILGen.
Reinstates commit 0c2ca94ef7
With two bug fixes:
*) use after free asan crash
*) wrong check in ValueLifetimeAnalysis::isWithinLifetime
And some refactoring
