In the case we optimize an integer extend away and replace it directly with the
source register, we also have to clear all kill flags at all its uses.
This is necessary, because the orignal IR instruction might be trivially dead,
but we replaced it with a nop at MI level.
llvm-svn: 221628
Switch statements may have more than one incoming edge into the same BB if they
all have the same value. When the switch statement is converted these incoming
edges are now coming from multiple BBs. Updating all incoming values to be from
a single BB is incorrect and would generate invalid LLVM IR.
The fix is to only update the first occurrence of an incoming value. Switch
lowering will perform subsequent calls to this helper function for each incoming
edge with a new basic block - updating all edges in the process.
This fixes rdar://problem/18916275.
llvm-svn: 221627
This fixes an issue with matching trunc -> assertsext -> zext on x86-64, which would not zero the high 32-bits.
See PR20494 for details.
Differential Revision: http://reviews.llvm.org/D6128
llvm-svn: 221626
This reverts the runtime library portion of r194168. As of r221621,
the libclang_rt libraries for Darwin build with explicit SDK options
so there is no need to set SDKROOT here.
llvm-svn: 221625
The minimal fake SDK was very useful in allowing us to build for all
Darwin platforms without needing access to the real SDKs, but it did
not support building any of the sanitizer runtimes. It's important to
fix that. As a consequence, if you don't have the iOS SDKs installed,
we will now skip building the iOS-specific libclang_rt libraries.
rdar://problem/18825276
llvm-svn: 221621
Summary:
It currently only implements hasBranchDivergence, and will be extended
in later diffs.
Split from D6188.
Test Plan: make check-all
Reviewers: jholewinski
Reviewed By: jholewinski
Subscribers: llvm-commits, meheff, eliben, jholewinski
Differential Revision: http://reviews.llvm.org/D6195
llvm-svn: 221619
This fixes a few cases of:
* Wrong variable name style.
* Lines longer than 80 columns.
* Repeated names in comments.
* clang-format of the above.
This make the next patch a lot easier to read.
llvm-svn: 221615
This was already set up for the iOS simulator ASan dylib simulator,
and this change extends that to the other iOS runtime libraries.
This is in preparation for building all those iOS libraries against
the real SDKs instead of the fake SDKs in compiler-rt.
llvm-svn: 221614
r221575 introduced a NoreturnUnwind test that did not skip the dsym
test on non-darwin platforms, and had the @dwarf_test case as an exact
copy of the dsym case (including the test name, test_with_dsym).
llvm-svn: 221611
r199996 added new x86_64h slices for all the Darwin compiler_rt libraries
that had an x86_64 slice, but that is overkill for the iOS Simulator
platform where the x86_64h slice is never used.
llvm-svn: 221610
'@' followed by any keyword can't be an annotation, but @interface is currently
the only combination of '@' and a keyword that's allowed, so limit it to this
case. `@interface Foo` without a leading `public` was misformatted prior to
this patch.
llvm-svn: 221607
Summary:
If we actually change directory before processing a file, we need to
restore it afterwards. This was broken in r216620.
Added a comment for the changes in r216620.
Reviewers: klimek
Reviewed By: klimek
Subscribers: klimek, cfe-commits
Differential Revision: http://reviews.llvm.org/D6162
llvm-svn: 221600
FIXME: It should work on not only Linux but elf-targeting gnu ld.
For example if LLVM_DYLIB_COMPONENTS is "BitWriter Support", CMake emits the command line like;
-Wl,--whole-archive
lib/libLLVMBitWriter.a
lib/libLLVMSupport.a *1
-Wl,--no-whole-archive
lib/libLLVMCore.a
lib/libLLVMSupport.a *2
-lrt -ldl -ltinfo -lpthread -lm
It works since symbols in LLVMCore is resolved with not *2 but *1.
Unfortunately, --gc-sections is not powerful in this case to prune unused "visibility(default)" entries.
I am still experimenting other way not to rely on --whole-archive.
llvm-svn: 221591
The dynamic table was creating the entry DT_FINI_ARRAY{SZ} even when there was
no .fini_array section. The entries should be creating in the dynamic section
only if there are sections .init_array/.fini_array in the output.
Fixes the tests that checked for errroneous outputs.
llvm-svn: 221588
The value of _DYNAMIC should be pointing at the start of the .dynamic segment.
This was pointing to the end of the dynamic segment. Similarly the value of
_GLOBAL_OFFSET_TABLE_ was not proper too.
llvm-svn: 221587
The parsing routines in the linker script to parse strings encoded in various
formats(hexadecimal, octal, decimal, etc), is needed by the GNU driver too. This
library provides helper functions for all flavors and flavors to add helper
functions which other flavors may make use of.
llvm-svn: 221583
Summary:
Tweak the asan stack overflow heuristics to cope with PowerPC64 redzones,
which are larger than on x86-64: 288 bytes for big-endian and 512 bytes
for little-endian.
Reviewers: kcc, willschm, samsonov, eugenis
Reviewed By: samsonov, eugenis
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D6168
llvm-svn: 221578
it in RegisterContext.cpp.
There's a lot of bookkeeping code in RegisterContextLLDB where it has
to convert between different register numbering schemes and it makes
some methods like SavedLocationForRegister very hard to read or
maintain. Abstract all of the details about different register numbering
systems for a given register into this new class to make it easier
to understand what the method is doing.
Also add register name printing to all of the logging -- that's easy to
get now that I've got an object to represent the register numbers.
There were some gnarly corner cases of this method that I believe
I've translated correctly - initial testing looks good but it's
possible I missed a corner case, especially with architectures which
uses a link-register aka return address register like arm32/arm64.
Basic behavior is correct but there are a lot of corner casese that are
handled in this method ...
llvm-svn: 221577
Juergen Ributzka