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[arm] Implement eabi_attribute, cpu, and fpu directives.

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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
This commit is contained in:
Logan Chien
2013-10-28 17:51:12 +00:00
parent 790b973f80
commit 23125d02d9
14 changed files with 913 additions and 303 deletions
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6
include/llvm/MC/MCStreamer.h
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@@ -87,6 +87,12 @@ public:
virtual void emitPad(int64_t Offset) = 0;
virtual void emitRegSave(const SmallVectorImpl<unsigned> &RegList,
bool isVector) = 0;
virtual void switchVendor(StringRef Vendor) = 0;
virtual void emitAttribute(unsigned Attribute, unsigned Value) = 0;
virtual void emitTextAttribute(unsigned Attribute, StringRef String) = 0;
virtual void emitFPU(unsigned FPU) = 0;
virtual void finishAttributeSection() = 0;
};
/// MCStreamer - Streaming machine code generation interface. This interface