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llvm-project/llvm/test/CodeGen/PowerPC/atomic-1.ll

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The atomic.cmp.swap promotion logic is wrong: it simply does the atomic.cmp.swap on the larger type, which means it blows away whatever is sitting in the bytes just after the memory location, i.e. causes a buffer overflow. This really requires target specific code, which is why LegalizeTypes doesn't try to handle this case generically. The existing (wrong) code in LegalizeDAG will go away automatically once the type legalization code is removed from LegalizeDAG so I'm leaving it there for the moment. Meanwhile, don't test for this feature. llvm-svn: 53669
2008-07-16 16:09:48 +08:00
; RUN: llvm-as < %s | llc -march=ppc32 | grep lwarx | count 3
Adjust grep's for new code sequence. llvm-svn: 55320
2008-08-26 02:53:58 +08:00
; RUN: llvm-as < %s | llc -march=ppc32 | grep stwcx. | count 4
64-bit atomic operations. llvm-svn: 49949
2008-04-19 10:30:38 +08:00
define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind {
Added MemOperands to Atomic operations since Atomics touches memory. Added abstract class MemSDNode for any Node that have an associated MemOperand Changed atomic.lcs => atomic.cmp.swap, atomic.las => atomic.load.add, and atomic.lss => atomic.load.sub llvm-svn: 52706
2008-06-25 16:15:39 +08:00
%tmp = call i32 @llvm.atomic.load.add.i32( i32* %mem, i32 %val )
64-bit atomic operations. llvm-svn: 49949
2008-04-19 10:30:38 +08:00
ret i32 %tmp
}
define i32 @exchange_and_cmp(i32* %mem) nounwind {
Added MemOperands to Atomic operations since Atomics touches memory. Added abstract class MemSDNode for any Node that have an associated MemOperand Changed atomic.lcs => atomic.cmp.swap, atomic.las => atomic.load.add, and atomic.lss => atomic.load.sub llvm-svn: 52706
2008-06-25 16:15:39 +08:00
%tmp = call i32 @llvm.atomic.cmp.swap.i32( i32* %mem, i32 0, i32 1 )
64-bit atomic operations. llvm-svn: 49949
2008-04-19 10:30:38 +08:00
ret i32 %tmp
}
define i32 @exchange(i32* %mem, i32 %val) nounwind {
%tmp = call i32 @llvm.atomic.swap.i32( i32* %mem, i32 1 )
ret i32 %tmp
}
Added MemOperands to Atomic operations since Atomics touches memory. Added abstract class MemSDNode for any Node that have an associated MemOperand Changed atomic.lcs => atomic.cmp.swap, atomic.las => atomic.load.add, and atomic.lss => atomic.load.sub llvm-svn: 52706
2008-06-25 16:15:39 +08:00
declare i32 @llvm.atomic.load.add.i32(i32*, i32) nounwind
declare i32 @llvm.atomic.cmp.swap.i32(i32*, i32, i32) nounwind
64-bit atomic operations. llvm-svn: 49949
2008-04-19 10:30:38 +08:00
declare i32 @llvm.atomic.swap.i32(i32*, i32) nounwind