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[GlobalOpt] Don't remove inalloca from varargs functions
authorArthur Eubanks <aeubanks@google.com>
Tue, 1 Nov 2022 18:37:10 +0000 (11:37 -0700)
committerArthur Eubanks <aeubanks@google.com>
Tue, 1 Nov 2022 20:04:05 +0000 (13:04 -0700)
commit8c49b01a1ee051ab2c09be4cffc83656ccc0fbe6
treebe829f037c04c6659264aa35f3daac8c1aa3140btree | snapshot
parentddcb2d19b372913b13f06a7824b49be57480718fcommit | diff
[GlobalOpt] Don't remove inalloca from varargs functions

Varargs and inalloca have a weird interaction where varargs are actually
passed via the inalloca alloca. Removing inalloca breaks the varargs
because they're still not passed as separate arguments.

Fixes #58718

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D137182
llvm/lib/Transforms/IPO/GlobalOpt.cpp diff | blob | history
llvm/test/Transforms/GlobalOpt/inalloca-varargs.ll [new file with mode: 0644] blob
Domain: System / Toolchain;