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3 Commits

Author SHA1 Message Date
Tim Northover
5c8b83eb7a X86: expand atomics in IR instead of as MachineInstrs. 
The logic for expanding atomics that aren't natively supported in
terms of cmpxchg loops is much simpler to express at the IR level. It
also allows the normal optimisations and CodeGen improvements to help
out with atomics, instead of using a limited set of possible
instructions..

rdar://problem/13496295

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212119 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-07-01 18:53:31 +00:00
NAKAMURA Takumi
f17422181f llvm/test/CodeGen/X86/pr5145.ll: Tweak expressions to match for darwin target. 
.LBB0_1: # Linux
LBB0_1:  # Darwin

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164362 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-21 05:19:19 +00:00
Michael Liao
fe87c302aa Add missing i8 max/min/umax/umin support 
- Fix PR5145 and turn on test 8-bit atomic ops



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164358 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-21 03:18:52 +00:00