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8 Commits

Author SHA1 Message Date
Tim Northover
0adfdedacb Fix 64-bit atomic operations in Thumb mode. 
The ARM and Thumb variants of LDREXD and STREXD have different constraints and
take different operands. Previously the code expanding atomic operations didn't
take this into account and asserted in Thumb mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173780 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-29 09:06:13 +00:00
Silviu Baranga
4a9256f265 Fixed the condition codes for the atomic64 min/umin code generation on ARM. If the sutraction of the higher 32 bit parts gives a 0 result, we need to do the store operation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173437 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-25 10:39:49 +00:00
Silviu Baranga
35b3df6e31 Added atomic 64 min/max/umin/umax instrinsics support in the ARM backend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168886 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-11-29 14:41:25 +00:00
Weiming Zhao
e56764bad1 Remove hard coded registers in ARM ldrexd and strexd instructions 
This patch replaces the hard coded GPR pair [R0, R1] of
Intrinsic:arm_ldrexd and [R2, R3] of Intrinsic:arm_strexd with
even/odd GPRPair reg class.
Similar to the lowering of atomic_64 operation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168207 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-11-16 21:55:34 +00:00
Eli Friedman
ba567d670d Generic expansion for atomic load/store into cmpxchg/atomicrmw xchg; implements 64-bit atomic load/store for ARM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138872 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-31 18:26:09 +00:00
Eli Friedman
4d3f329453 64-bit atomic cmpxchg for ARM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138868 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-31 17:52:22 +00:00
Eli Friedman
3d93861c23 Some minor cleanups for r138845. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138846 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-31 00:41:05 +00:00
Eli Friedman
2bdffe4882 Some 64-bit atomic operations on ARM. 64-bit cmpxchg coming next. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138845 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-31 00:31:29 +00:00