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This commit allows the ARM integrated assembler to parse
and assemble the code with .eabi_attribute, .cpu, and
.fpu directives.
To implement the feature, this commit moves the code from
AttrEmitter to ARMTargetStreamers, and several new test
cases related to cortex-m4, cortex-r5, and cortex-a15 are
added.
Besides, this commit also change the Subtarget->isFPOnlySP()
to Subtarget->hasD16() to match the usage of .fpu directive.
This commit changes the test cases:
* Several .eabi_attribute directives in
2010-09-29-mc-asm-header-test.ll are removed because the .fpu
directive already cover the functionality.
* In the Cortex-A15 test case, the value for
Tag_Advanced_SIMD_arch has be changed from 1 to 2,
which is more precise.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193524 91177308-0d34-0410-b5e6-96231b3b80d8
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MCStreamer now owns the target streamer. This prevents leaking the target
streamer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192303 91177308-0d34-0410-b5e6-96231b3b80d8
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This patch fixes an old FIXME by creating a MCTargetStreamer interface
and moving the target specific functions for ARM, Mips and PPC to it.
The ARM streamer is still declared in a common place because it is
used from lib/CodeGen/ARMException.cpp, but the Mips and PPC are
completely hidden in the corresponding Target directories.
I will send an email to llvmdev with instructions on how to use this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192181 91177308-0d34-0410-b5e6-96231b3b80d8
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When MC was first added, targets could use hasRawTextSupport to keep features
working before they were added to the MC interface.
The design goal of MC is to provide an uniform api for printing assembly and
object files. Short of relaxations and other corner cases, a object file is
just another representation of the assembly.
It was never the intention that targets would keep doing things like
if (hasRawTextSupport())
Set flags in one way.
else
Set flags in another way.
When they do that they create two code paths and the object file is no longer
just another representation of the assembly. This also then requires testing
with llc -filetype=obj, which is extremelly brittle.
This patch removes some of these hacks by replacing them with smaller ones.
The ARM flag setting is trivial, so I just moved it to the constructor. For
Mips, the patch adds two temporary hack directives that allow the assembly
to represent the same things as the object file was already able to.
The hope is that the mips developers will replace the hack directives with
the same ones that gas uses and drop the -print-hack-directives flag.
I will also try to implement a target streamer interface, so that we can
move this out of the common code.
In summary, for any new work, two rules of the thumb are
* Don't use "llc -filetype=obj" in tests.
* Don't add calls to hasRawTextSupport.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192035 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191052 91177308-0d34-0410-b5e6-96231b3b80d8
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This is dead code since PIC16 was removed in 2010. The result was an odd mix,
where some parts would carefully pass it along and others would assert it was
zero (most of the object streamer for example).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185436 91177308-0d34-0410-b5e6-96231b3b80d8
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According to ARM EHABI section 9.2, if the
__aeabi_unwind_cpp_pr1() or __aeabi_unwind_cpp_pr2() is
used, then the handler data must be emitted after the unwind
opcodes. The handler data consists of several words, and
should be terminated by zero.
In case that the .handlerdata directive is not specified by
the programmer, we should emit zero to terminate the handler
data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185422 91177308-0d34-0410-b5e6-96231b3b80d8
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Someone may want to do something crazy, like replace these objects if they
change or something.
No functionality change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184175 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183682 91177308-0d34-0410-b5e6-96231b3b80d8
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Changes to ARM unwind opcode assembler:
* Fix multiple .save or .vsave directives. Besides, the
order is preserved now.
* For the directives which will generate multiple opcodes,
such as ".save {r0-r11}", the order of the unwind opcode
is fixed now, i.e. the registers with less encoding value
are popped first.
* Fix the $sp offset calculation. Now, we can use the
.setfp, .pad, .save, and .vsave directives at any order.
Changes to test cases:
* Add test cases to check the order of multiple opcodes
for the .save directive.
* Fix the incorrect $sp offset in the test case. The
stack pointer offset specified in the test case was
incorrect. (Changed test cases: ehabi-mc-section.ll and
ehabi-mc.ll)
* The opcode to restore $sp are slightly reordered. The
behavior are not changed, and the new output is same
as the output of GNU as. (Changed test cases:
eh-directive-pad.s and eh-directive-setfp.s)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183627 91177308-0d34-0410-b5e6-96231b3b80d8
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This commit implements the AsmParser for fnstart, fnend,
cantunwind, personality, handlerdata, pad, setfp, save, and
vsave directives.
This commit fixes some minor issue in the ARMELFStreamer:
* The switch back to corresponding section after the .fnend
directive.
* Emit the unwind opcode while processing .fnend directive
if there is no .handlerdata directive.
* Emit the unwind opcode to .ARM.extab while processing
.handlerdata even if .personality directive does not exist.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181603 91177308-0d34-0410-b5e6-96231b3b80d8
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Differential Revision: http://llvm-reviews.chandlerc.com/D598
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179725 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179593 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179591 91177308-0d34-0410-b5e6-96231b3b80d8
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isa<> and dyn_cast<>. In several places, code is already hacking around
the absence of this, and there seem to be several interfaces that might
be lifted and/or devirtualized using this.
This change was based on a discussion with Jim Grosbach about how best
to handle testing for specific MCStreamer subclasses. He said that this
was the correct end state, and everything else was too hacky so
I decided to just make it so.
No functionality should be changed here, this is just threading the kind
through all the constructors and setting up the classof overloads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174113 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173939 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170902 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169676 91177308-0d34-0410-b5e6-96231b3b80d8
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std::string to a StringRef. Moreover, the method being called accepts
a Twine to simplify these patterns.
Fixes this ASan failure:
==6312== ERROR: AddressSanitizer: heap-use-after-free on address 0x7fd558b1af58 at pc 0xcb7529 bp 0x7fffff572080 sp 0x7fffff572078
READ of size 1 at 0x7fd558b1af58 thread T0
#0 0xcb7528 .../llvm/include/llvm/ADT/StringRef.h:192 llvm::StringRef::operator[]()
#1 0x1d53c0a .../llvm/include/llvm/ADT/StringExtras.h:128 llvm::HashString()
#2 0x1d53878 .../llvm/lib/Support/StringMap.cpp:64 llvm::StringMapImpl::LookupBucketFor()
#3 0x1b6872f .../llvm/include/llvm/ADT/StringMap.h:352 llvm::StringMap<>::GetOrCreateValue<>()
#4 0x1b61836 .../llvm/lib/MC/MCContext.cpp:109 llvm::MCContext::GetOrCreateSymbol()
#5 0xe9fd47 .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:154 (anonymous namespace)::ARMELFStreamer::EmitMappingSymbol()
#6 0xea01dd .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:133 (anonymous namespace)::ARMELFStreamer::EmitDataMappingSymbol()
#7 0xe9f78b .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:91 (anonymous namespace)::ARMELFStreamer::EmitBytes()
#8 0x1b15d82 .../llvm/lib/MC/MCStreamer.cpp:89 llvm::MCStreamer::EmitIntValue()
#9 0xcc0f9b .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:713 llvm::ARMAsmPrinter::emitAttributes()
#10 0xcc0d44 .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:632 llvm::ARMAsmPrinter::EmitStartOfAsmFile()
#11 0x14692ad .../llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp:162 llvm::AsmPrinter::doInitialization()
#12 0x1bc4677 .../llvm/lib/VMCore/PassManager.cpp:1561 llvm::FPPassManager::doInitialization()
#13 0x1bc4990 .../llvm/lib/VMCore/PassManager.cpp:1595 llvm::MPPassManager::runOnModule()
#14 0x1bc55e5 .../llvm/lib/VMCore/PassManager.cpp:1705 llvm::PassManagerImpl::run()
#15 0x1bc5878 .../llvm/lib/VMCore/PassManager.cpp:1740 llvm::PassManager::run()
#16 0xc3954d .../llvm/tools/llc/llc.cpp:378 compileModule()
#17 0xc38001 .../llvm/tools/llc/llc.cpp:194 main
#18 0x7fd557d6a11c __libc_start_main
0x7fd558b1af58 is located 24 bytes inside of 29-byte region [0x7fd558b1af40,0x7fd558b1af5d)
freed by thread T0 here:
#0 0xc337da .../llvm/projects/compiler-rt/lib/asan/asan_new_delete.cc:56 operator delete()
#1 0x1ee9cef .../libstdc++-v3/include/bits/basic_string.h:535 std::string::~string()
#2 0xea01dd .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:133 (anonymous namespace)::ARMELFStreamer::EmitDataMappingSymbol()
#3 0xe9f78b .../llvm/lib/Target/ARM/MCTargetDesc/ARMELFStreamer.cpp:91 (anonymous namespace)::ARMELFStreamer::EmitBytes()
#4 0x1b15d82 .../llvm/lib/MC/MCStreamer.cpp:89 llvm::MCStreamer::EmitIntValue()
#5 0xcc0f9b .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:713 llvm::ARMAsmPrinter::emitAttributes()
#6 0xcc0d44 .../llvm/lib/Target/ARM/ARMAsmPrinter.cpp:632 llvm::ARMAsmPrinter::EmitStartOfAsmFile()
#7 0x14692ad .../llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp:162 llvm::AsmPrinter::doInitialization()
#8 0x1bc4677 .../llvm/lib/VMCore/PassManager.cpp:1561 llvm::FPPassManager::doInitialization()
#9 0x1bc4990 .../llvm/lib/VMCore/PassManager.cpp:1595 llvm::MPPassManager::runOnModule()
#10 0x1bc55e5 .../llvm/lib/VMCore/PassManager.cpp:1705 llvm::PassManagerImpl::run()
#11 0x1bc5878 .../llvm/lib/VMCore/PassManager.cpp:1740 llvm::PassManager::run()
#12 0xc3954d .../llvm/tools/llc/llc.cpp:378 compileModule()
#13 0xc38001 .../llvm/tools/llc/llc.cpp:194 main
#14 0x7fd557d6a11c __libc_start_main
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169668 91177308-0d34-0410-b5e6-96231b3b80d8
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Before this patch, when you objdump an LLVM-compiled file, objdump tried to
decode data-in-code sections as if they were code. This patch adds the missing
Mapping Symbols, as defined by "ELF for the ARM Architecture" (ARM IHI 0044D).
Patch based on work by Greg Fitzgerald.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169609 91177308-0d34-0410-b5e6-96231b3b80d8
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