Commit Graph

15 Commits

Author SHA1 Message Date
Craig Topper f96a7706d9 [Target] Use Align in TargetLoweringObjectFile::getSectionForConstant.
Differential Revision: https://reviews.llvm.org/D80363
2020-05-21 15:23:29 -07:00
Fangrui Song 85c30f3374 [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
2020-03-20 21:57:34 -07:00
Eric Christopher fc7233d774 Temporarily Revert "[X86] Reland D71360 Clean up UseInitArray initialization for X86ELFTargetObjectFile"
as it's causing msan failures.

This reverts commit 7899fe9da8.
2020-03-20 17:36:12 -07:00
Fangrui Song 7899fe9da8 [X86] Reland D71360 Clean up UseInitArray initialization for X86ELFTargetObjectFile
UseInitArray 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.

Differential Revision: https://reviews.llvm.org/D71360
2020-03-20 11:18:36 -07:00
Mitch Phillips 2423774cc2 Revert "Honor -fuse-init-array when os is not specified on x86"
This reverts commit aa5ee8f244.

This change broke the sanitizer buildbots. See comments at the patchset
(https://reviews.llvm.org/D71360) for more information.
2019-12-17 07:36:59 -08:00
Kamlesh Kumar aa5ee8f244 Honor -fuse-init-array when os is not specified on x86
Currently -fuse-init-array option is not effective when target triple
does not specify os, on x86,x86_64.
i.e.

// -fuse-init-array is not honored.
$ clang -target i386 -fuse-init-array test.c -S

// -fuse-init-array is honored.
$ clang -target i386-linux -fuse-init-array test.c -S

This patch fixes first case.
And does cleanup.

Reviewers: rnk, craig.topper, fhahn, echristo

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D71360
2019-12-16 15:21:23 -08:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Jacques Pienaar bd275c7ba7 [Lanai] Code model dictates section selection.
Always use the small section when the small code model is specified.

llvm-svn: 324679
2018-02-08 23:25:05 +00:00
Zachary Turner 264b5d9e88 Move Object format code to lib/BinaryFormat.
This creates a new library called BinaryFormat that has all of
the headers from llvm/Support containing structure and layout
definitions for various types of binary formats like dwarf, coff,
elf, etc as well as the code for identifying a file from its
magic.

Differential Revision: https://reviews.llvm.org/D33843

llvm-svn: 304864
2017-06-07 03:48:56 +00:00
Jacques Pienaar ccffe38352 [lanai] Simplify small section check in LowerGlobalAddress and treat ldata sections specially.
Move the check for the code model into isGlobalInSmallSectionImpl and return false (not in small section) for variables placed in sections prefixed with .ldata (workaround for a tool limitation).

llvm-svn: 289832
2016-12-15 16:56:16 +00:00
Peter Collingbourne 6733564e5a Target: Change various section classifiers in TargetLoweringObjectFile to take a GlobalObject.
These functions are about classifying a global which will actually be
emitted, so it does not make sense for them to take a GlobalValue which may
for example be an alias.

Change the Mach-O object writer and the Hexagon, Lanai and MIPS backends to
look through aliases before using TargetLoweringObjectFile interfaces. These
are functional changes but all appear to be bug fixes.

Differential Revision: https://reviews.llvm.org/D25917

llvm-svn: 285006
2016-10-24 19:23:39 +00:00
Eric Christopher 4367c7fb9a Move the Mangler from the AsmPrinter down to TLOF and clean up the
TLOF API accordingly.

llvm-svn: 281708
2016-09-16 07:33:15 +00:00
Jacques Pienaar e2f0699d64 [lanai] Small cleanup: remove/comment out unused args
llvm-svn: 275636
2016-07-15 22:38:32 +00:00
Jacques Pienaar 5ffdef55f0 [lanai] Change reloc to use PIC_ by default and cleanup.
* Change reloc to PIC_;
* Cleanup (clang-format & modify test);

llvm-svn: 270282
2016-05-20 21:41:53 +00:00
Jacques Pienaar fcef3e4617 [lanai] Add Lanai backend.
Add the Lanai backend to lib/Target.

General Lanai backend discussion on llvm-dev thread "[RFC] Lanai backend" (http://lists.llvm.org/pipermail/llvm-dev/2016-February/095118.html).

Differential Revision: http://reviews.llvm.org/D17011

llvm-svn: 264578
2016-03-28 13:09:54 +00:00