From c52b2cf226cb3f1bb1b16bee28d47785506adff3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Magnus=20L=C3=A5ng?= Date: Thu, 16 Mar 2017 15:30:00 +0100 Subject: hipe: Add pseudo_spill_f?move instructions These pseudo instructions are added to all backends and allow spill slot to spill slot move coalescing in a clean way. They have regular move semantics, but contain an additional scratch register to be used if both source and destination are spilled, and can not be move coalesced. Additionally, a register allocator callback Target:is_spill_move(Instr, Context) is added which allows the spill slot allocators to check for these instructions and try to coalesce the spill slots the two temporaries are allocated to. --- lib/hipe/x86/hipe_x86.hrl | 2 ++ 1 file changed, 2 insertions(+) (limited to 'lib/hipe/x86/hipe_x86.hrl') diff --git a/lib/hipe/x86/hipe_x86.hrl b/lib/hipe/x86/hipe_x86.hrl index 567848bae5..6cd69905b2 100644 --- a/lib/hipe/x86/hipe_x86.hrl +++ b/lib/hipe/x86/hipe_x86.hrl @@ -91,6 +91,8 @@ -record(pseudo_call, {'fun', sdesc, contlab, linkage}). -record(pseudo_jcc, {cc, true_label, false_label, pred}). -record(pseudo_spill, {args=[]}). +-record(pseudo_spill_move, {src, temp, dst}). +-record(pseudo_spill_fmove, {src, temp, dst}). -record(pseudo_tailcall, {'fun', arity, stkargs, linkage}). -record(pseudo_tailcall_prepare, {}). -record(push, {src}). -- cgit v1.2.3