The bug can be triggered when we require LoopInfo analysis ahead of DominatorTree construction in a Module Pass. The cause is that the LoopInfo analysis itself also invokes DominatorTree construction, therefore, when PassManager schedules LoopInfo, it will add DominatorTree first. Then after that, when the PassManger turns to schedule DominatorTree invoked by the above ModulePass, it finds there is already a DominatorTree, so it delete the redundant one. However, somehow it still try to access that pass pointer after free as code pasted below, which results in segment fault.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168581 91177308-0d34-0410-b5e6-96231b3b80d8
This patch migrates the toascii optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168580 91177308-0d34-0410-b5e6-96231b3b80d8
This patch migrates the isascii optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168579 91177308-0d34-0410-b5e6-96231b3b80d8
This patch migrates the isdigit optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168578 91177308-0d34-0410-b5e6-96231b3b80d8
Adding CXX_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG
C_SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG
This is to handle the wackiness on a Mac host where cmake detects:
CMAKE_CXX_COMPILER == "/usr/bin/c++"
CMAKE_C_COMPILER == "/usr/bin/gcc"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168577 91177308-0d34-0410-b5e6-96231b3b80d8
This patch migrates the *abs optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168574 91177308-0d34-0410-b5e6-96231b3b80d8
This patch migrates the ffs* optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168571 91177308-0d34-0410-b5e6-96231b3b80d8
- Widespread trailing space removal
- A dash of OCD spacing to block align enums
- joined a line that probably needed 80 cols a while back
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168566 91177308-0d34-0410-b5e6-96231b3b80d8
to support it. Original patch with the parsing and plumbing by the PaX team and
Roman Divacky. I added the bits in MCDwarf.cpp and the test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168565 91177308-0d34-0410-b5e6-96231b3b80d8
Necessary to give disassembler users (like darwin's otool) a possibility to
dlopen libLTO and still initialize the required LLVM bits. This used to go
through libMCDisassembler but that's a gross layering violation, the MC layer
can't pull in functions from the targets. Adding a function to libLTO is a bit
of a hack but not worse than exposing other disassembler bits from libLTO.
Fixes PR14362.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168545 91177308-0d34-0410-b5e6-96231b3b80d8
The last remaining bit is "bcl 20, 31, AnonSymbol", which I couldn't find the
instruction definition for. Only whitespace changes in assembly output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168541 91177308-0d34-0410-b5e6-96231b3b80d8
This untangles the switch cases of the old Move and RelMove opcodes a bit
and makes it clear how to add new instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168534 91177308-0d34-0410-b5e6-96231b3b80d8
Give MCCFIInstruction a single, private constructor and add helper static
methods that create each type of cfi instruction. This is is preparation
for changing its representation. The representation with a pair
MachineLocations older than MC and has been abused quiet a bit to support
more cfi instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168532 91177308-0d34-0410-b5e6-96231b3b80d8
It can delete the block, and the loop continues on free'd memory.
No change in output. Found by valgrind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168525 91177308-0d34-0410-b5e6-96231b3b80d8
it will expand any .cfi_* directives in the input assembly.
Unfortunately this cannot replace elf-dump in tests as the asm streamer
cannot relax the line advance opcodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168522 91177308-0d34-0410-b5e6-96231b3b80d8
I discovered a few more missing functions while migrating optimizations
from the simplify-libcalls pass to the instcombine (I already added some
in r167659).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168501 91177308-0d34-0410-b5e6-96231b3b80d8
