[llvm-commits] [RFC] Add x32 psABI support

[Michael Liao]

Hi,

Here is resubmitting of x32 psABI[1] patches against the latest trunk
for code review. The change from last submitting is

- resolve a minor conflicting due to the recent trunk change on dynamic
alloca support
- temporarily disable crash.ll, which is recently added with
'-verify-machineinstrs' flag. This new flag trigger the complaints on
illegal operand (real 64-bit reg) of PUSHX32r (requires faked 32-bit
reg).

* 0001-start-x32-psABI-support.patch
  start x32 psABI support by adding 'gnux32' environment triple and
enable x32 psABI host build

* 0002-add-x32-ELF-generation-support.patch
  add x32 psABI ELF generation support

* 0003-add-x32-code-generation-support.patch
  add x32 psABI code generation support

* 0004-revise-x86-codegen-test-for-x32-psABI.patch
  revise x86 codegen tests for x32 psABI

Looking forward to your comments.

Thanks
- Michael Liao


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[1] https://sites.google.com/site/x32abi/
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