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[X86] Reland D71360 Clean up UseInitArray initialization for X86ELFTargetObjectFile
-fuse-init-array is now the CC1 default but TargetLoweringObjectFileELF::UseInitArray still defaults to false.
The following two unknown OS target triples continue using .ctors/.dtors because InitializeELF is not called.
clang -target i386 -c a.c
clang -target x86_64 -c a.c
This cleanup fixes this as a bonus.
X86SpeculativeLoadHardeningPass::tracePredStateThroughCall can call
MCContext::createTempSymbol before TargetLoweringObjectFileELF::Initialize().
We need to call TargetLoweringObjectFileELF::Initialize() ealier.
test/CodeGen/X86/speculative-load-hardening-indirect.ll
Differential Revision: https://reviews.llvm.org/D71360
14 files changed: