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[PowerPC] Support powerpc64le as a syntax-checking target.

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This patch provides basic support for powerpc64le as an LLVM target.
However, use of this target will not actually generate little-endian
code.  Instead, use of the target will cause the correct little-endian
built-in defines to be generated, so that code that tests for
__LITTLE_ENDIAN__, for example, will be correctly parsed for
syntax-only testing.  Code generation will otherwise be the same as
powerpc64 (big-endian), for now.

The patch leaves open the possibility of creating a little-endian
PowerPC64 back end, but there is no immediate intent to create such a
thing.

The LLVM portions of this patch simply add ppc64le coverage everywhere
that ppc64 coverage currently exists.  There is nothing of any import
worth testing until such time as little-endian code generation is
implemented.  In the corresponding Clang patch, there is a new test
case variant to ensure that correct built-in defines for little-endian
code are generated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187179 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Schmidt
2013-07-26 01:35:43 +00:00
parent fb5b3eaacb
commit f38cc38fa6
22 changed files with 73 additions and 17 deletions
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include/llvm/ADT/Triple.h
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@@ -55,6 +55,7 @@ public:
msp430, // MSP430: msp430
ppc, // PPC: powerpc
ppc64, // PPC64: powerpc64, ppu
ppc64le, // PPC64LE: powerpc64le
r600, // R600: AMD GPUs HD2XXX - HD6XXX
sparc, // Sparc: sparc
sparcv9, // Sparcv9: Sparcv9