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22 lines
706 B
LLVM
22 lines
706 B
LLVM
; RUN: llc < %s -march=ppc32 | grep lwarx | count 3
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; RUN: llc < %s -march=ppc32 | grep stwcx. | count 4
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define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind {
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%tmp = call i32 @llvm.atomic.load.add.i32( i32* %mem, i32 %val )
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ret i32 %tmp
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}
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define i32 @exchange_and_cmp(i32* %mem) nounwind {
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%tmp = call i32 @llvm.atomic.cmp.swap.i32( i32* %mem, i32 0, i32 1 )
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ret i32 %tmp
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}
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define i32 @exchange(i32* %mem, i32 %val) nounwind {
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%tmp = call i32 @llvm.atomic.swap.i32( i32* %mem, i32 1 )
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ret i32 %tmp
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}
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declare i32 @llvm.atomic.load.add.i32(i32*, i32) nounwind
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declare i32 @llvm.atomic.cmp.swap.i32(i32*, i32, i32) nounwind
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declare i32 @llvm.atomic.swap.i32(i32*, i32) nounwind
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