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Author SHA1 Message Date
Zequan Wu
3977b77a6b [CodeGen] Fix nomerge attribute not working in tail calls. 
In D79537, `nomerge` was made to only apply to non-tail calls. This fixes it by also applying it to tail calls.

For ARM, I only made the new MI to inherit the flag under `TCRETURNdi` and `TCRETURNri`, because that's the place tail calls got replaced. Not sure if there's any other place needed.

Fixes #61545.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D146749
 2023-05-10 14:25:11 -04:00
Zequan Wu
321d02cc6b [NFC] Update CodeGen/*/nomerge.ll tests with utils/update_llc_test_checks.py. 
Precommit this patch for better diff view on D146749.

Reviewed By: nemanjai

Differential Revision: https://reviews.llvm.org/D147454
 2023-04-03 19:52:39 -04:00
Ilya Leoshkevich
6764869548 [SystemZ] Add NoMerge MIFlag 
Summary:
This fixes ASan and MSan tests on SystemZ after
commit 6a822e20ce70 ("[ASan][MSan] Remove EmptyAsm and set the CallInst
to nomerge to avoid from merging.").

Based on commit 80e107ccd088 ("Add NoMerge MIFlag to avoid MIR branch
folding").

Reviewers: uweigand, jonpa

Reviewed By: uweigand

Subscribers: hiraditya, llvm-commits, Andreas-Krebbel

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D82794
 2020-06-30 12:44:45 +02:00