From c4df1d182c13c0665868e39aa7ee1e967368db40 Mon Sep 17 00:00:00 2001 From: Heejin Ahn Date: Wed, 22 Aug 2018 00:20:02 +0000 Subject: [WebAssembly] Change comments on SP writing back (NFC) Summary: We now write back not to memory but to __stack_pointer global. Reviewers: dschuff Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D51074 llvm-svn: 340372 --- llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.h') diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.h b/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.h index e888aaf3aef..5e744ad498b 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.h +++ b/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.h @@ -24,7 +24,8 @@ class MachineFrameInfo; class WebAssemblyFrameLowering final : public TargetFrameLowering { public: /// Size of the red zone for the user stack (leaf functions can use this much - /// space below the stack pointer without writing it back to memory). + /// space below the stack pointer without writing it back to __stack_pointer + /// global). // TODO: (ABI) Revisit and decide how large it should be. static const size_t RedZoneSize = 128; -- cgit v1.2.3