On 7/1/2022 4:04 PM, Ian Lance Taylor via Gcc-patches wrote:
The DSE pass can delete a dead store even if the instruction can trap. That is incorrect when using -fnon-call-exceptions -fno-delete-dead-exceptions. This led to a bug report against gccgo: https://go.dev/issue/53012. However, the bug is not specific to Go. This patch fixes the problem in a simple way, and includes a C++ testcase. Bootstrapped and ran C, C++, and Go tests on x86_64-pc-linux-gnu. OK for mainline?
OK jeff
