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authorMagnus Lång <[email protected]>2017-03-16 15:30:00 +0100
committerMagnus Lång <[email protected]>2017-03-16 20:49:42 +0100
commitc52b2cf226cb3f1bb1b16bee28d47785506adff3 (patch)
treef016829f93e26db7fe7e2329ace868f4b2442510 /lib/hipe/sparc/hipe_sparc_defuse.erl
parentd1d26f4bf9da3cc5eab4e918df771d67fe9e6bb5 (diff)
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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.
Diffstat (limited to 'lib/hipe/sparc/hipe_sparc_defuse.erl')
-rw-r--r--lib/hipe/sparc/hipe_sparc_defuse.erl4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/hipe/sparc/hipe_sparc_defuse.erl b/lib/hipe/sparc/hipe_sparc_defuse.erl
index cb75f82e2b..4d4b11e301 100644
--- a/lib/hipe/sparc/hipe_sparc_defuse.erl
+++ b/lib/hipe/sparc/hipe_sparc_defuse.erl
@@ -39,6 +39,7 @@ insn_def_gpr(I) ->
#pseudo_call{} -> call_clobbered_gpr();
#pseudo_move{dst=Dst} -> [Dst];
#pseudo_set{dst=Dst} -> [Dst];
+ #pseudo_spill_move{temp=Temp, dst=Dst} -> [Temp, Dst];
#pseudo_tailcall_prepare{} -> tailcall_clobbered_gpr();
#rdy{dst=Dst} -> [Dst];
#sethi{dst=Dst} -> [Dst];
@@ -72,6 +73,7 @@ insn_use_gpr(I) ->
funv_use(FunV, arity_use_gpr(Arity));
#pseudo_move{src=Src} -> [Src];
#pseudo_ret{} -> [hipe_sparc:mk_rv()];
+ #pseudo_spill_move{src=Src} -> [Src];
#pseudo_tailcall{funv=FunV,arity=Arity,stkargs=StkArgs} ->
addsrcs(StkArgs, addtemps(tailcall_clobbered_gpr(), funv_use(FunV, arity_use_gpr(Arity))));
#store{src=Src,base=Base,disp=Disp} ->
@@ -112,6 +114,7 @@ insn_def_fpr(I) ->
#fp_unary{dst=Dst} -> [Dst];
#pseudo_fload{dst=Dst} -> [Dst];
#pseudo_fmove{dst=Dst} -> [Dst];
+ #pseudo_spill_fmove{temp=Temp, dst=Dst} -> [Temp, Dst];
_ -> []
end.
@@ -130,6 +133,7 @@ insn_use_fpr(I) ->
#fp_unary{src=Src} -> [Src];
#pseudo_fmove{src=Src} -> [Src];
#pseudo_fstore{src=Src} -> [Src];
+ #pseudo_spill_fmove{src=Src} -> [Src];
_ -> []
end.