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cmd/compile: the loong64 intrinsic for CompareAndSwapUint32 function needs to sign extend its "old" argument. [1.19 backport]
@dr2chase requested issue #57282 to be considered for backport to the next 1.19 minor release.
@gopherbot please open backport issues.
Change https://go.dev/cl/458355 mentions this issue: [release-branch.go1.19] cmd/compile: sign-extend the 2nd argument of the LoweredAtomicCas32 on loong64,mips64x,riscv64
Closed by merging c1760296e70f6155315d368b8afd35a0e5377dea to release-branch.go1.19.