166623 2016-12-30 12:05:11 -0800 WebAssembly: avoid pinning registers when no Memory is present 2017-04-14 16:22:45 -0700 1 1 1 Unclassified WebKit JavaScriptCore WebKit Nightly Build Unspecified Unspecified RESOLVED CONFIGURATION CHANGED P2 Normal --- 165282 161709 1 jfbastien webkit-unassigned jfbastien keith_miller saam oldest_to_newest 1263165 0 jfbastien 2016-12-30 12:05:11 -0800 In bug #165282 I'm changing pinning so that we unconditionally pin registers for all Modules, even if we technically don't need to when no Memory is present. This makes it easier to implement the wasm -> wasm call thunks because the thunk needs to set up the callee's pinned registers and therefore necessarily clobbers the caller's values. The caller thinks these registers are callee-saved, but that's annoying to do because wasm -> wasm is a tail call. We could teach B3 that these calls clobber those registers. 1294237 1 jfbastien 2017-04-04 15:56:31 -0700 To clarify: this is for memory and size pinned registers, if any. 1297565 2 jfbastien 2017-04-14 16:22:45 -0700 Keith says this is done.