This adds the program memory address space setting to the AVR data
layout.
This setting was very recently added under r325479.
At the moment, there are no uses of this setting. In the future, things
such as switch lookup tables should reside there.
llvm-svn: 325481
Reverting to investigate layering effects of MCJIT not linking
libCodeGen but using TargetMachine::getNameWithPrefix() breaking the
lldb bots.
This reverts commit r315633.
llvm-svn: 315637
Merge LLVMTargetMachine into TargetMachine.
- There is no in-tree target anymore that just implements TargetMachine
but not LLVMTargetMachine.
- It should still be possible to stub out all the various functions in
case a target does not want to use lib/CodeGen
- This simplifies the code and avoids methods ending up in the wrong
interface.
Differential Revision: https://reviews.llvm.org/D38489
llvm-svn: 315633
This was an oversight in the original backend data layout.
The AVR architecture does not have the concept of unaligned loads - all
loads/stores from all addresses are aligned to one byte.
Discovered in avr-rust issue #64https://github.com/avr-rust/rust/issues/64
Patch By Gergo Erdi.
llvm-svn: 314179
The patch from r310028 fixed things to work with the new
`LLVMTargetMachine` constructor that came in on r309911.
However, the fix was partial since an object of type
`CodeModel::Model` must be passed to `LLVMTargetMachine`
(not one of `Optional<CodeModel::Model>`).
This patch fixes the problem in the same fashion that r309911
did for other machines: by checking if the passed optional
code model has a value and using `CodeModel::Small` if not.
llvm-svn: 310200
We should rewrite this using the generic branch relaxation pass, but for
the moment having this pass is better than hitting an assertion error.
llvm-svn: 307109
I did this a long time ago with a janky python script, but now
clang-format has built-in support for this. I fed clang-format every
line with a #include and let it re-sort things according to the precise
LLVM rules for include ordering baked into clang-format these days.
I've reverted a number of files where the results of sorting includes
isn't healthy. Either places where we have legacy code relying on
particular include ordering (where possible, I'll fix these separately)
or where we have particular formatting around #include lines that
I didn't want to disturb in this patch.
This patch is *entirely* mechanical. If you get merge conflicts or
anything, just ignore the changes in this patch and run clang-format
over your #include lines in the files.
Sorry for any noise here, but it is important to keep these things
stable. I was seeing an increasing number of patches with irrelevant
re-ordering of #include lines because clang-format was used. This patch
at least isolates that churn, makes it easy to skip when resolving
conflicts, and gets us to a clean baseline (again).
llvm-svn: 304787
TargetPassConfig is not useful for targets that do not use the CodeGen
library, so we may just as well store a pointer to an
LLVMTargetMachine instead of just to a TargetMachine.
While at it, also change the constructor to take a reference instead of a
pointer as the TM must not be nullptr.
llvm-svn: 304247
Summary:
This pass will be used to relax instructions which use out of bounds
memory accesses to equivalent operations that can work with the
addresses.
The pass currently implements relaxation for the STDWPtrQRr instruction.
Without this pass, an assertion error would be hit in the pseudo expansion pass.
In the future, we will need to add more instructions to this pass. We can do
that on a case-by-case basic.
Reviewers: arsenm, kparzysz
Subscribers: wdng, llvm-commits, mgorny
Differential Revision: https://reviews.llvm.org/D27650
llvm-svn: 289517
Summary:
A lot of the pseudo instructions are required because LLVM assumes that
all integers of the same size as the pointer size are legal. This means
that it will not currently expand 16-bit instructions to their 8-bit
variants because it thinks 16-bit types are legal for the operations.
This also adds all of the CodeGen tests that required the pass to run.
Reviewers: arsenm, kparzysz
Subscribers: wdng, mgorny, modocache, llvm-commits
Differential Revision: https://reviews.llvm.org/D26577
llvm-svn: 287162
The previous data layout caused issues when dealing with atomics.
Foe example, it is illegal to load a 16-bit value with less than 16-bits
of alignment.
This changes the data layout so that all types are aligned by at least
their own width.
Interestingly, this also _slightly_ decreased register pressure in some
cases.
llvm-svn: 282587
Many files include Passes.h but only a fraction needs to know about the
TargetPassConfig class. Move it into an own header. Also rename
Passes.cpp to TargetPassConfig.cpp while we are at it.
llvm-svn: 269011
This adds part of the target info code, and adds modifications to
the build scripts so that AVR is recognized a supported, experimental
backend.
It does not include any AVR-specific code, just the bare sources required
for a backend to exist.
From D14039.
llvm-svn: 252865
Dylan McKay