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Matthias Braun e3fec27cc5 ARM: Fix CMP_SWAP expansion 
Clean up after my misguided attempt in r304267 to "fix" CMP_SWAP
returning an uninitialized status value.

- I was always using tMOVi8 to zero the status register which cannot
  encode higher register numbers and llvm would silently miscompile)

- Nobody was ever looking at that status value outside the expansion.
  ARMDAGToDAGISel::SelectCMP_SWAP() the only place creating CMP_SWAP
  instructions was not mapping anything to it. (The cmpxchg status value
  from llvm IR is lowered to a manual comparison after the CMP_SWAP)

So this:
- Renames the register from "status" to "temp" it make it obvious that
  it isn't used outside the expansion.
- Remove the zeroing status/temp register.
- Keep the live-in list improvements from r304267

Fixes http://llvm.org/PR34056

llvm-svn: 310534
2017-08-09 22:22:05 +00:00
bindings Update the Go bindings for r309426 (remove offset from llvm.dbg.value) 2017-07-28 22:44:44 +00:00
cmake [OCaml] Pass -D/-UNDEBUG through to ocamlc 2017-07-29 08:10:24 +00:00
docs LangRef: Fix/improve cmpxchg wording 2017-08-09 22:22:04 +00:00
examples Defeat another -Wunused-but-set-variable warning 2017-07-19 15:06:31 +00:00
include [X86][Asm] Allow negative immediate to appear before bracketed expression 2017-08-09 21:49:17 +00:00
lib ARM: Fix CMP_SWAP expansion 2017-08-09 22:22:05 +00:00
projects Add temporary workaround to allow in-tree libc++ builds on Windows 2017-05-11 01:44:30 +00:00
resources
runtimes [CMake] Remove redundant logic in runtimes/CMakeList.txt 2017-07-24 17:26:28 +00:00
test ARM: Fix CMP_SWAP expansion 2017-08-09 22:22:05 +00:00
tools [llvm-cov] Rearrange entries in report index. 2017-08-09 20:43:31 +00:00
unittests [Support] PR33388 - Fix formatv_object move constructor 2017-08-09 13:47:01 +00:00
utils [globalisel][tablegen] Remove unnecessary ; to satisfy ubuntu-gcc7.1-werror. 2017-08-08 13:21:26 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format
.clang-tidy
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt [GlobalISel] Make GlobalISel a non-optional library. 2017-08-03 21:52:25 +00:00
CODE_OWNERS.TXT Remove the BBVectorize pass. 2017-06-30 07:09:08 +00:00
configure
CREDITS.TXT Another test commit 2017-07-01 03:24:06 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in
LLVMBuild.txt
README.txt Test commit. Added a blank line. 2017-03-06 20:45:33 +00:00
RELEASE_TESTERS.TXT [RelTest] Diana is doing both releases now 2017-07-14 08:33:52 +00:00

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