> Hi, > > This patch introduces `JitCompiler::isConstantExpression` which can be used > to statically determine whether an expression has been constant-folded by the > Jit compiler, leading to more constant-folding opportunities. For example, it > can be used in `MemorySessionImpl::checkValidStateRaw` to eliminate the > lifetime check on global sessions without imposing additional branches on > other non-global sessions. This is similar to `__builtin_constant_p` in GCC > and clang. > > Please kindly give your opinion as well as your reviews, thanks very much.
Quan Anh Mai has updated the pull request incrementally with one additional commit since the last revision: change expr to val, add examples ------------- Changes: - all: https://git.openjdk.org/jdk/pull/17527/files - new: https://git.openjdk.org/jdk/pull/17527/files/b4445e2e..84f9f7eb Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=17527&range=06 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17527&range=05-06 Stats: 51 lines in 1 file changed: 28 ins; 4 del; 19 mod Patch: https://git.openjdk.org/jdk/pull/17527.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/17527/head:pull/17527 PR: https://git.openjdk.org/jdk/pull/17527
