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[rebranch][GlobalISel] Ensure that translateInvoke adds all successors for inlineasm #3596

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Merged
merged 1 commit into from
Dec 1, 2021

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@bnbarham bnbarham commented Nov 30, 2021

Cherry-picks 3eabcda to stable/20211026 to fix Sanitizers/tsan/racy_async_let_fibonacci.swift


The existing code didn't add all necessary successors, which resulted in
disjoint basic blocks. These would end up not being legalized which, in the
best case, caused a fallback only in assert builds.

Here's an example:

https://godbolt.org/z/ndx15Enfj

We also end up getting weird codegen here as well.

Refactoring the code here allows us to correctly attach all successors. With
this patch, the above example gives correct codegen at -O0 with and without
asserts.

Also autogen the testcase to show that we add all the successors now.

Differential Revision: https://reviews.llvm.org/D113437

…neasm

The existing code didn't add all necessary successors, which resulted in
disjoint basic blocks. These would end up not being legalized which, in the
best case, caused a fallback only in assert builds.

Here's an example:

https://godbolt.org/z/ndx15Enfj

We also end up getting weird codegen here as well.

Refactoring the code here allows us to correctly attach all successors. With
this patch, the above example gives correct codegen at -O0 with and without
asserts.

Also autogen the testcase to show that we add all the successors now.

Differential Revision: https://reviews.llvm.org/D113437
@bnbarham bnbarham requested a review from ornata November 30, 2021 23:34
@bnbarham bnbarham merged commit 5d99b64 into swiftlang:stable/20211026 Dec 1, 2021
@bnbarham bnbarham deleted the cherry-rdar84477340 branch December 1, 2021 01:40
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