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https://github.com/c64scene-ar/llvm-6502.git
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de412c391b
I did not convert Atomics-32.ll and Atomics-64.ll by hand; the diff is autoupgrade output. The wmb test is gone because there isn't any way to express wmb with the new atomic instructions; if someone really needs a non-asm way to write a wmb on Alpha, a platform-specific intrisic could be added. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140566 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
601 B
LLVM
27 lines
601 B
LLVM
; RUN: llc < %s -march=ppc32 | FileCheck %s
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define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind {
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; CHECK: exchange_and_add:
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; CHECK: lwarx
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%tmp = atomicrmw add i32* %mem, i32 %val monotonic
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; CHECK: stwcx.
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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: exchange_and_cmp:
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; CHECK: lwarx
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%tmp = cmpxchg i32* %mem, i32 0, i32 1 monotonic
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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: 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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