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-rw-r--r--lib/hipe/rtl/hipe_tagscheme.erl71
1 files changed, 26 insertions, 45 deletions
diff --git a/lib/hipe/rtl/hipe_tagscheme.erl b/lib/hipe/rtl/hipe_tagscheme.erl
index 133e36d409..e6e2816840 100644
--- a/lib/hipe/rtl/hipe_tagscheme.erl
+++ b/lib/hipe/rtl/hipe_tagscheme.erl
@@ -647,14 +647,13 @@ unsafe_update_element(Tuple, Index, Value) -> % Index is an immediate
element(Dst, Index, Tuple, FailLabName, {tuple, A}, IndexInfo) ->
FixnumOkLab = hipe_rtl:mk_new_label(),
IndexOkLab = hipe_rtl:mk_new_label(),
- Ptr = hipe_rtl:mk_new_reg(), % offset from Tuple
UIndex = hipe_rtl:mk_new_reg_gcsafe(),
Arity = hipe_rtl:mk_imm(A),
- InvIndex = hipe_rtl:mk_new_reg_gcsafe(),
- Offset = hipe_rtl:mk_new_reg_gcsafe(),
case IndexInfo of
valid ->
%% This is no branch, 1 load and 3 alus = 4 instr
+ Offset = hipe_rtl:mk_new_reg_gcsafe(),
+ Ptr = hipe_rtl:mk_new_reg(), % offset from Tuple
[untag_fixnum(UIndex, Index),
hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
hipe_rtl:mk_alu(Offset, UIndex, 'sll',
@@ -663,72 +662,56 @@ element(Dst, Index, Tuple, FailLabName, {tuple, A}, IndexInfo) ->
fixnums ->
%% This is 1 branch, 1 load and 4 alus = 6 instr
[untag_fixnum(UIndex, Index),
- hipe_rtl:mk_alu(Ptr, Tuple, 'sub',hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED))|
- gen_element_tail(Dst, Ptr, InvIndex, Arity, Offset, UIndex,
- FailLabName, IndexOkLab)];
+ gen_element_tail(Dst, Tuple, Arity, UIndex, FailLabName, IndexOkLab)];
_ ->
%% This is 3 branches, 1 load and 5 alus = 9 instr
[test_fixnum(Index, hipe_rtl:label_name(FixnumOkLab),
FailLabName, 0.99),
FixnumOkLab,
untag_fixnum(UIndex, Index),
- hipe_rtl:mk_alu(Ptr, Tuple, 'sub',hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED))|
- gen_element_tail(Dst, Ptr, InvIndex, Arity, Offset, UIndex,
- FailLabName, IndexOkLab)]
+ gen_element_tail(Dst, Tuple, Arity, UIndex, FailLabName, IndexOkLab)]
end;
element(Dst, Index, Tuple, FailLabName, tuple, IndexInfo) ->
FixnumOkLab = hipe_rtl:mk_new_label(),
IndexOkLab = hipe_rtl:mk_new_label(),
- Ptr = hipe_rtl:mk_new_reg(), % offset from Tuple
Header = hipe_rtl:mk_new_reg_gcsafe(),
UIndex = hipe_rtl:mk_new_reg_gcsafe(),
Arity = hipe_rtl:mk_new_reg_gcsafe(),
- InvIndex = hipe_rtl:mk_new_reg_gcsafe(),
- Offset = hipe_rtl:mk_new_reg_gcsafe(),
case IndexInfo of
fixnums ->
%% This is 1 branch, 2 loads and 5 alus = 8 instr
- [hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
- hipe_rtl:mk_load(Header, Ptr, hipe_rtl:mk_imm(0)),
+ [get_header(Header, Tuple),
untag_fixnum(UIndex, Index),
hipe_rtl:mk_alu(Arity,Header,'srl',hipe_rtl:mk_imm(?HEADER_ARITY_OFFS))|
- gen_element_tail(Dst, Ptr, InvIndex, Arity, Offset, UIndex,
- FailLabName, IndexOkLab)];
+ gen_element_tail(Dst, Tuple, Arity, UIndex, FailLabName, IndexOkLab)];
Num when is_integer(Num) ->
%% This is 1 branch, 1 load and 3 alus = 5 instr
- [hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED))|
- gen_element_tail(Dst, Ptr, InvIndex, hipe_rtl:mk_imm(Num),
- Offset, UIndex, FailLabName, IndexOkLab)];
+ gen_element_tail(Dst, Tuple, hipe_rtl:mk_imm(Num), UIndex, FailLabName,
+ IndexOkLab);
_ ->
%% This is 2 branches, 2 loads and 6 alus = 10 instr
[test_fixnum(Index, hipe_rtl:label_name(FixnumOkLab), FailLabName, 0.99),
FixnumOkLab,
- hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
- hipe_rtl:mk_load(Header, Ptr, hipe_rtl:mk_imm(0)),
+ get_header(Header, Tuple),
untag_fixnum(UIndex, Index),
hipe_rtl:mk_alu(Arity,Header,'srl',hipe_rtl:mk_imm(?HEADER_ARITY_OFFS))|
- gen_element_tail(Dst, Ptr, InvIndex, Arity, Offset, UIndex,
- FailLabName, IndexOkLab)]
+ gen_element_tail(Dst, Tuple, Arity, UIndex, FailLabName, IndexOkLab)]
end;
element(Dst, Index, Tuple, FailLabName, unknown, IndexInfo) ->
FixnumOkLab = hipe_rtl:mk_new_label(),
BoxedOkLab = hipe_rtl:mk_new_label(),
TupleOkLab = hipe_rtl:mk_new_label(),
IndexOkLab = hipe_rtl:mk_new_label(),
- Ptr = hipe_rtl:mk_new_reg(), % offset from Tuple
Header = hipe_rtl:mk_new_reg_gcsafe(),
UIndex = hipe_rtl:mk_new_reg_gcsafe(),
Arity = hipe_rtl:mk_new_reg_gcsafe(),
- InvIndex = hipe_rtl:mk_new_reg_gcsafe(),
- Offset = hipe_rtl:mk_new_reg_gcsafe(),
case IndexInfo of
fixnums ->
%% This is 3 branches, 2 loads and 5 alus = 10 instr
[test_is_boxed(Tuple, hipe_rtl:label_name(BoxedOkLab),
FailLabName, 0.99),
BoxedOkLab,
- hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
- hipe_rtl:mk_load(Header, Ptr, hipe_rtl:mk_imm(0)),
+ get_header(Header, Tuple),
hipe_rtl:mk_branch(Header, 'and',
hipe_rtl:mk_imm(?TAG_HEADER_MASK), 'eq',
hipe_rtl:label_name(TupleOkLab), FailLabName, 0.99),
@@ -736,23 +719,21 @@ element(Dst, Index, Tuple, FailLabName, unknown, IndexInfo) ->
untag_fixnum(UIndex, Index),
hipe_rtl:mk_alu(Arity, Header, 'srl',
hipe_rtl:mk_imm(?HEADER_ARITY_OFFS))|
- gen_element_tail(Dst, Ptr, InvIndex, Arity, Offset,
- UIndex, FailLabName, IndexOkLab)];
+ gen_element_tail(Dst, Tuple, Arity, UIndex, FailLabName, IndexOkLab)];
Num when is_integer(Num) ->
%% This is 3 branches, 2 loads and 4 alus = 9 instr
[test_is_boxed(Tuple, hipe_rtl:label_name(BoxedOkLab),
FailLabName, 0.99),
BoxedOkLab,
- hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
- hipe_rtl:mk_load(Header, Ptr, hipe_rtl:mk_imm(0)),
+ get_header(Header, Tuple),
hipe_rtl:mk_branch(Header, 'and',
hipe_rtl:mk_imm(?TAG_HEADER_MASK), 'eq',
hipe_rtl:label_name(TupleOkLab), FailLabName, 0.99),
TupleOkLab,
hipe_rtl:mk_alu(Arity, Header, 'srl',
hipe_rtl:mk_imm(?HEADER_ARITY_OFFS))|
- gen_element_tail(Dst, Ptr, InvIndex, Arity, Offset,
- hipe_rtl:mk_imm(Num), FailLabName, IndexOkLab)];
+ gen_element_tail(Dst, Tuple, Arity, hipe_rtl:mk_imm(Num), FailLabName,
+ IndexOkLab)];
_ ->
%% This is 4 branches, 2 loads, and 6 alus = 12 instr :(
[test_fixnum(Index, hipe_rtl:label_name(FixnumOkLab),
@@ -761,8 +742,7 @@ element(Dst, Index, Tuple, FailLabName, unknown, IndexInfo) ->
test_is_boxed(Tuple, hipe_rtl:label_name(BoxedOkLab),
FailLabName, 0.99),
BoxedOkLab,
- hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
- hipe_rtl:mk_load(Header, Ptr, hipe_rtl:mk_imm(0)),
+ get_header(Header, Tuple),
hipe_rtl:mk_branch(Header, 'and',
hipe_rtl:mk_imm(?TAG_HEADER_MASK), 'eq',
hipe_rtl:label_name(TupleOkLab), FailLabName, 0.99),
@@ -770,20 +750,21 @@ element(Dst, Index, Tuple, FailLabName, unknown, IndexInfo) ->
untag_fixnum(UIndex, Index),
hipe_rtl:mk_alu(Arity, Header, 'srl',
hipe_rtl:mk_imm(?HEADER_ARITY_OFFS))|
- gen_element_tail(Dst, Ptr, InvIndex, Arity, Offset,
- UIndex, FailLabName, IndexOkLab)]
+ gen_element_tail(Dst, Tuple, Arity, UIndex, FailLabName, IndexOkLab)]
end.
-gen_element_tail(Dst, Ptr, InvIndex, Arity, Offset,
- UIndex, FailLabName, IndexOkLab) ->
+gen_element_tail(Dst, Tuple, Arity, UIndex, FailLabName, IndexOkLab) ->
+ ZeroIndex = hipe_rtl:mk_new_reg_gcsafe(),
+ Offset = hipe_rtl:mk_new_reg_gcsafe(),
+ Ptr = hipe_rtl:mk_new_reg(), % offset from Tuple
%% now check that 1 <= UIndex <= Arity
- %% if UIndex < 1, then (Arity - UIndex) >= Arity
- %% if UIndex > Arity, then (Arity - UIndex) < 0, which is >=u Arity
- %% otherwise, 0 <= (Arity - UIndex) < Arity
- [hipe_rtl:mk_alu(InvIndex, Arity, 'sub', UIndex),
- hipe_rtl:mk_branch(InvIndex, 'geu', Arity, FailLabName,
+ %% by checking the equivalent (except for when Arity>=2^(WordSize-1))
+ %% (UIndex - 1) <u Arity
+ [hipe_rtl:mk_alu(ZeroIndex, UIndex, 'sub', hipe_rtl:mk_imm(1)),
+ hipe_rtl:mk_branch(ZeroIndex, 'geu', Arity, FailLabName,
hipe_rtl:label_name(IndexOkLab), 0.01),
IndexOkLab,
+ hipe_rtl:mk_alu(Ptr, Tuple, 'sub', hipe_rtl:mk_imm(?TAG_PRIMARY_BOXED)),
hipe_rtl:mk_alu(Offset, UIndex, 'sll',
hipe_rtl:mk_imm(hipe_rtl_arch:log2_word_size())),
hipe_rtl:mk_load(Dst, Ptr, Offset)].
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 12:42:46 +0000