28 lines
774 B
LLVM
28 lines
774 B
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-apple-darwin | FileCheck %s
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define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind {
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; CHECK-LABEL: exchange_and_add:
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; CHECK: lwarx {{r[0-9]+}}, 0, {{r[0-9]+}}
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%tmp = atomicrmw add i32* %mem, i32 %val monotonic
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; CHECK: stwcx. {{r[0-9]+}}, 0, {{r[0-9]+}}
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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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; CHECK-LABEL: exchange_and_cmp:
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; CHECK: lwarx
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%tmppair = cmpxchg i32* %mem, i32 0, i32 1 monotonic monotonic
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%tmp = extractvalue { i32, i1 } %tmppair, 0
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; CHECK: stwcx.
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; CHECK: stwcx.
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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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; CHECK-LABEL: exchange:
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; CHECK: lwarx
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%tmp = atomicrmw xchg i32* %mem, i32 1 monotonic
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; CHECK: stwcx.
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ret i32 %tmp
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}
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