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| author | Tim Northover <Tim.Northover@arm.com> | 2013-02-28 13:52:07 +0000 |
|---|---|---|
| committer | Tim Northover <Tim.Northover@arm.com> | 2013-02-28 13:52:07 +0000 |
| commit | 279b9184c2ff4fea93b198a3519b8cb3a1d8d195 (patch) | |
| tree | f5ae69ecc976e62daded9c99bbdab787c97ba17b /lib/Target/AArch64/AArch64InstrInfo.td | |
| parent | 5e812139690ce077d568ef6559992b2cf74eb536 (diff) | |
| download | llvm-279b9184c2ff4fea93b198a3519b8cb3a1d8d195.tar.gz llvm-279b9184c2ff4fea93b198a3519b8cb3a1d8d195.tar.bz2 llvm-279b9184c2ff4fea93b198a3519b8cb3a1d8d195.tar.xz | |
AArch64: Use cbnz instead of cmp/b.ne pair for atomic operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176253 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/AArch64/AArch64InstrInfo.td')
| -rw-r--r-- | lib/Target/AArch64/AArch64InstrInfo.td | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/lib/Target/AArch64/AArch64InstrInfo.td b/lib/Target/AArch64/AArch64InstrInfo.td index 562a7f60bb..78c4ad16d7 100644 --- a/lib/Target/AArch64/AArch64InstrInfo.td +++ b/lib/Target/AArch64/AArch64InstrInfo.td @@ -159,7 +159,7 @@ let Defs = [XSP], Uses = [XSP] in { // Atomic operation pseudo-instructions //===----------------------------------------------------------------------===// -let usesCustomInserter = 1, Defs = [NZCV] in { +let usesCustomInserter = 1 in { multiclass AtomicSizes<string opname> { def _I8 : PseudoInst<(outs GPR32:$dst), (ins GPR64:$ptr, GPR32:$incr), [(set GPR32:$dst, (!cast<SDNode>(opname # "_8") GPR64:$ptr, GPR32:$incr))]>; @@ -178,11 +178,14 @@ defm ATOMIC_LOAD_AND : AtomicSizes<"atomic_load_and">; defm ATOMIC_LOAD_OR : AtomicSizes<"atomic_load_or">; defm ATOMIC_LOAD_XOR : AtomicSizes<"atomic_load_xor">; defm ATOMIC_LOAD_NAND : AtomicSizes<"atomic_load_nand">; -defm ATOMIC_LOAD_MIN : AtomicSizes<"atomic_load_min">; -defm ATOMIC_LOAD_MAX : AtomicSizes<"atomic_load_max">; -defm ATOMIC_LOAD_UMIN : AtomicSizes<"atomic_load_umin">; -defm ATOMIC_LOAD_UMAX : AtomicSizes<"atomic_load_umax">; defm ATOMIC_SWAP : AtomicSizes<"atomic_swap">; +let Defs = [NZCV] in { + // These operations need a CMP to calculate the correct value + defm ATOMIC_LOAD_MIN : AtomicSizes<"atomic_load_min">; + defm ATOMIC_LOAD_MAX : AtomicSizes<"atomic_load_max">; + defm ATOMIC_LOAD_UMIN : AtomicSizes<"atomic_load_umin">; + defm ATOMIC_LOAD_UMAX : AtomicSizes<"atomic_load_umax">; +} let usesCustomInserter = 1, Defs = [NZCV] in { def ATOMIC_CMP_SWAP_I8 |