[llvm] [RISCV][ISEL] Lowering to load-acquire/store-release for RISCV Zalasr (PR #82914)

Wang Pengcheng via llvm-commits llvm-commits at lists.llvm.org
Mon Feb 26 00:16:57 PST 2024


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@@ -105,22 +105,66 @@ defm AMOMAXU_D  : AMO_rr_aq_rl<0b11100, 0b011, "amomaxu.d">,
 // Pseudo-instructions and codegen patterns
 //===----------------------------------------------------------------------===//
 
+// An atomic load operation that does not need either acquire or release
+// semantics.
+class relaxed_load<PatFrags base>
+  : PatFrag<(ops node:$ptr), (base node:$ptr)> {
+  let IsAtomic = 1;
----------------
wangpc-pp wrote:

Yes, I know it (I referred to AArhc64 too). :-)
I meant that we can reduce some lines via using above approaches.

https://github.com/llvm/llvm-project/pull/82914


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