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authorMagnus Lång <[email protected]>2016-10-02 13:14:40 +0200
committerMagnus Lång <[email protected]>2017-03-02 14:49:14 +0100
commit200473bc4874a12485ba0b6c681c3648cb8aa355 (patch)
tree04a1fe099040e97755e0e3327e95cad57290abe2 /lib/hipe
parent2117c9e01ed2949b245c8f41c00cac2619a5041a (diff)
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hipe_rtl: Inline more of match eq test
With this change, both the matches and does not match cases have fastpaths that does not need to call primops.
Diffstat (limited to 'lib/hipe')
-rw-r--r--lib/hipe/rtl/hipe_icode2rtl.erl12
-rw-r--r--lib/hipe/rtl/hipe_tagscheme.erl16
2 files changed, 26 insertions, 2 deletions
diff --git a/lib/hipe/rtl/hipe_icode2rtl.erl b/lib/hipe/rtl/hipe_icode2rtl.erl
index 82970f04ab..6da8a76d34 100644
--- a/lib/hipe/rtl/hipe_icode2rtl.erl
+++ b/lib/hipe/rtl/hipe_icode2rtl.erl
@@ -532,8 +532,12 @@ gen_cond(CondOp, Args, TrueLbl, FalseLbl, Pred) ->
FalseLbl, Pred)];
'=:=' ->
[Arg1, Arg2] = Args,
+ TypeTestLbl = hipe_rtl:mk_new_label(),
[hipe_rtl:mk_branch(Arg1, eq, Arg2, TrueLbl,
- hipe_rtl:label_name(GenLbl), Pred),
+ hipe_rtl:label_name(TypeTestLbl), Pred),
+ TypeTestLbl,
+ hipe_tagscheme:test_either_immed(Arg1, Arg2, FalseLbl,
+ hipe_rtl:label_name(GenLbl)),
GenLbl,
hipe_rtl:mk_call([Tmp], op_exact_eqeq_2, Args,
TestRetName, [], not_remote),
@@ -546,8 +550,12 @@ gen_cond(CondOp, Args, TrueLbl, FalseLbl, Pred) ->
TrueLbl, 1-Pred)];
'=/=' ->
[Arg1, Arg2] = Args,
+ TypeTestLbl = hipe_rtl:mk_new_label(),
[hipe_rtl:mk_branch(Arg1, eq, Arg2, FalseLbl,
- hipe_rtl:label_name(GenLbl), 1-Pred),
+ hipe_rtl:label_name(TypeTestLbl), 1-Pred),
+ TypeTestLbl,
+ hipe_tagscheme:test_either_immed(Arg1, Arg2, TrueLbl,
+ hipe_rtl:label_name(GenLbl)),
GenLbl,
hipe_rtl:mk_call([Tmp], op_exact_eqeq_2, Args,
TestRetName, [], not_remote),
diff --git a/lib/hipe/rtl/hipe_tagscheme.erl b/lib/hipe/rtl/hipe_tagscheme.erl
index 35d1e7c8a4..133e36d409 100644
--- a/lib/hipe/rtl/hipe_tagscheme.erl
+++ b/lib/hipe/rtl/hipe_tagscheme.erl
@@ -40,6 +40,7 @@
fixnum_gt/5, fixnum_lt/5, fixnum_ge/5, fixnum_le/5, fixnum_val/1,
fixnum_mul/4, fixnum_addsub/5, fixnum_andorxor/4, fixnum_not/2,
fixnum_bsr/3, fixnum_bsl/3]).
+-export([test_either_immed/4]).
-export([unsafe_car/2, unsafe_cdr/2,
unsafe_constant_element/3, unsafe_update_element/3, element/6]).
-export([unsafe_closure_element/3]).
@@ -595,6 +596,21 @@ fixnum_bsl(Arg1, Arg2, Res) ->
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Test if either of two values are immediate (primary tag IMMED1, 0x3)
+test_either_immed(Arg1, Arg2, TrueLab, FalseLab) ->
+ %% This test assumes primary tag 0x0 is reserved and immed has tag 0x3
+ 16#0 = ?TAG_PRIMARY_HEADER,
+ 16#3 = ?TAG_PRIMARY_IMMED1,
+ Tmp1 = hipe_rtl:mk_new_reg_gcsafe(),
+ Tmp2 = hipe_rtl:mk_new_reg_gcsafe(),
+ [hipe_rtl:mk_alu(Tmp1, Arg1, 'sub', hipe_rtl:mk_imm(1)),
+ hipe_rtl:mk_alu(Tmp2, Arg2, 'sub', hipe_rtl:mk_imm(1)),
+ hipe_rtl:mk_alu(Tmp2, Tmp2, 'or', Tmp1),
+ hipe_rtl:mk_branch(Tmp2, 'and', hipe_rtl:mk_imm(2), eq,
+ FalseLab, TrueLab, 0.01)].
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
unsafe_car(Dst, Arg) ->
hipe_rtl:mk_load(Dst, Arg, hipe_rtl:mk_imm(-(?TAG_PRIMARY_LIST))).