From a3407eaa2104d634e4400c0c805202da462ee66f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Thu, 18 May 2017 07:17:22 +0200 Subject: Eliminate the -gen_dest macro flag Instructions that take a 'd' argument needs a -gen_dest flag in their macros. For example: %macro:put_list PutList -pack -gen_dest put_list s s d -gen_dest was needed when x(0) was stored in a register, since it is not possible to take the address of a register. Now that x(0) is stored in memory and we can take the address, we can eliminate gen_dest. --- erts/emulator/beam/beam_emu.c | 74 +++++++++++++++++++--------------------- erts/emulator/beam/ops.tab | 12 +++---- erts/emulator/utils/beam_makeops | 15 ++------ 3 files changed, 44 insertions(+), 57 deletions(-) (limited to 'erts/emulator') diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c index a90e6a0ba8..79d751d13e 100644 --- a/erts/emulator/beam/beam_emu.c +++ b/erts/emulator/beam/beam_emu.c @@ -158,7 +158,9 @@ do { \ /* * Register target (X or Y register). */ -#define REG_TARGET(Target) (*(((Target) & 1) ? &yb(Target-1) : &xb(Target))) + +#define REG_TARGET_PTR(Target) (((Target) & 1) ? &yb(Target-1) : &xb(Target)) +#define REG_TARGET(Target) (*REG_TARGET_PTR(Target)) /* * Store a result into a register given a destination descriptor. @@ -172,8 +174,6 @@ do { \ REG_TARGET(stb_reg) = (Result); \ } while (0) -#define StoreSimpleDest(Src, Dest) Dest = (Src) - /* * Store a result into a register and execute the next instruction. * Dst points to the word with a destination descriptor, which MUST @@ -420,7 +420,7 @@ void** beam_ops; #define TestHeapPutList(Need, Reg) \ do { \ TestHeap((Need), 1); \ - PutList(Reg, r(0), r(0), StoreSimpleDest); \ + PutList(Reg, r(0), r(0)); \ CHECK_TERM(r(0)); \ } while (0) @@ -547,11 +547,11 @@ void** beam_ops; GetR((N)+1, Dst2); \ } while (0) -#define PutList(H, T, Dst, Store) \ - do { \ - HTOP[0] = (H); HTOP[1] = (T); \ - Store(make_list(HTOP), Dst); \ - HTOP += 2; \ +#define PutList(H, T, Dst) \ + do { \ + HTOP[0] = (H); HTOP[1] = (T); \ + Dst = make_list(HTOP); \ + HTOP += 2; \ } while (0) #define Swap(R1, R2) \ @@ -568,11 +568,7 @@ void** beam_ops; R2 = Tmp = V; \ } while (0) -#define Move(Src, Dst, Store) \ - do { \ - Eterm term = (Src); \ - Store(term, Dst); \ - } while (0) +#define Move(Src, Dst) Dst = (Src) #define Move2Par(S1, D1, S2, D2) \ do { \ @@ -911,7 +907,7 @@ do { \ Target = _uint_size * Unit; \ } while (0) -#define BsGetFloat2(Ms, Live, Sz, Flags, Dst, Store, Fail) \ +#define BsGetFloat2(Ms, Live, Sz, Flags, Dst, Fail) \ do { \ ErlBinMatchBuffer *_mb; \ Eterm _result; Sint _size; \ @@ -922,12 +918,12 @@ do { \ LIGHT_SWAPOUT; \ _result = erts_bs_get_float_2(c_p, _size, (Flags), _mb); \ LIGHT_SWAPIN; \ - HEAP_SPACE_VERIFIED(0); \ + HEAP_SPACE_VERIFIED(0); \ if (is_non_value(_result)) { Fail; } \ - else { Store(_result, Dst); } \ + else { Dst = _result; } \ } while (0) -#define BsGetBinaryImm_2(Ms, Live, Sz, Flags, Dst, Store, Fail) \ +#define BsGetBinaryImm_2(Ms, Live, Sz, Flags, Dst, Fail) \ do { \ ErlBinMatchBuffer *_mb; \ Eterm _result; \ @@ -936,12 +932,12 @@ do { \ LIGHT_SWAPOUT; \ _result = erts_bs_get_binary_2(c_p, (Sz), (Flags), _mb); \ LIGHT_SWAPIN; \ - HEAP_SPACE_VERIFIED(0); \ + HEAP_SPACE_VERIFIED(0); \ if (is_non_value(_result)) { Fail; } \ - else { Store(_result, Dst); } \ + else { Dst = _result; } \ } while (0) -#define BsGetBinary_2(Ms, Live, Sz, Flags, Dst, Store, Fail) \ +#define BsGetBinary_2(Ms, Live, Sz, Flags, Dst, Fail) \ do { \ ErlBinMatchBuffer *_mb; \ Eterm _result; Uint _size; \ @@ -951,27 +947,27 @@ do { \ LIGHT_SWAPOUT; \ _result = erts_bs_get_binary_2(c_p, _size, (Flags), _mb); \ LIGHT_SWAPIN; \ - HEAP_SPACE_VERIFIED(0); \ + HEAP_SPACE_VERIFIED(0); \ if (is_non_value(_result)) { Fail; } \ - else { Store(_result, Dst); } \ + else { Dst = _result; } \ } while (0) -#define BsGetBinaryAll_2(Ms, Live, Unit, Dst, Store, Fail) \ - do { \ - ErlBinMatchBuffer *_mb; \ - Eterm _result; \ - TestHeap(ERL_SUB_BIN_SIZE, Live); \ - _mb = ms_matchbuffer(Ms); \ - if (((_mb->size - _mb->offset) % Unit) == 0) { \ - LIGHT_SWAPOUT; \ - _result = erts_bs_get_binary_all_2(c_p, _mb); \ - LIGHT_SWAPIN; \ - HEAP_SPACE_VERIFIED(0); \ - ASSERT(is_value(_result)); \ - Store(_result, Dst); \ - } else { \ - HEAP_SPACE_VERIFIED(0); \ - Fail; } \ +#define BsGetBinaryAll_2(Ms, Live, Unit, Dst, Fail) \ + do { \ + ErlBinMatchBuffer *_mb; \ + Eterm _result; \ + TestHeap(ERL_SUB_BIN_SIZE, Live); \ + _mb = ms_matchbuffer(Ms); \ + if (((_mb->size - _mb->offset) % Unit) == 0) { \ + LIGHT_SWAPOUT; \ + _result = erts_bs_get_binary_all_2(c_p, _mb); \ + LIGHT_SWAPIN; \ + HEAP_SPACE_VERIFIED(0); \ + ASSERT(is_value(_result)); \ + Dst = _result; \ + } else { \ + HEAP_SPACE_VERIFIED(0); \ + Fail; } \ } while (0) #define BsSkipBits2(Ms, Bits, Unit, Fail) \ diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab index 9b5bd7a749..896ab82a50 100644 --- a/erts/emulator/beam/ops.tab +++ b/erts/emulator/beam/ops.tab @@ -409,7 +409,7 @@ move3 x x x x x x move S=n D=y => init D move S=c D=y => move S x | move x D -%macro:move Move -pack -gen_dest +%macro:move Move -pack move x x move x y move y x @@ -538,7 +538,7 @@ i_put_tuple y I # put_list Const=c n Dst => move Const x | put_list x n Dst -%macro:put_list PutList -pack -gen_dest +%macro:put_list PutList -pack put_list x n x put_list y n x @@ -1209,9 +1209,9 @@ i_bs_get_integer_32 x f I d bs_get_binary2 Fail=f Ms=x Live=u Sz=sq Unit=u Flags=u Dst=d => \ gen_get_binary2(Fail, Ms, Live, Sz, Unit, Flags, Dst) -%macro: i_bs_get_binary_imm2 BsGetBinaryImm_2 -fail_action -gen_dest -%macro: i_bs_get_binary2 BsGetBinary_2 -fail_action -gen_dest -%macro: i_bs_get_binary_all2 BsGetBinaryAll_2 -fail_action -gen_dest +%macro: i_bs_get_binary_imm2 BsGetBinaryImm_2 -fail_action +%macro: i_bs_get_binary2 BsGetBinary_2 -fail_action +%macro: i_bs_get_binary_all2 BsGetBinaryAll_2 -fail_action i_bs_get_binary_imm2 f x I I I d i_bs_get_binary2 f x I s I d @@ -1224,7 +1224,7 @@ bs_get_float2 Fail=f Ms=x Live=u Sz=s Unit=u Flags=u Dst=d => \ bs_get_float2 Fail=f Ms=x Live=u Sz=q Unit=u Flags=u Dst=d => jump Fail -%macro: i_bs_get_float2 BsGetFloat2 -fail_action -gen_dest +%macro: i_bs_get_float2 BsGetFloat2 -fail_action i_bs_get_float2 f x I s I d # Miscellanous diff --git a/erts/emulator/utils/beam_makeops b/erts/emulator/utils/beam_makeops index 9813142585..b2bc9a17a8 100755 --- a/erts/emulator/utils/beam_makeops +++ b/erts/emulator/utils/beam_makeops @@ -928,7 +928,6 @@ sub basic_generator { my($tmp_arg_num) = 1; my($pack_spec) = ''; my($var_decls) = ''; - my($gen_dest_arg) = 'StoreSimpleDest'; my($i); my($no_prefetch) = 0; @@ -994,11 +993,11 @@ sub basic_generator { push(@f_types, $_); $prefix .= "GetR($size, $tmp);\n"; last SWITCH; }; - /d/ and do { $var_decls .= "Eterm dst; "; - push(@f, "dst"); + /d/ and do { $var_decls .= "Eterm dst; Eterm* dst_ptr; "; + push(@f, "*dst_ptr"); push(@f_types, $_); $prefix .= "dst = Arg($size);\n"; - $gen_dest_arg = 'StoreResult'; + $prefix .= "dst_ptr = REG_TARGET_PTR(dst);\n"; last SWITCH; }; defined($incl_arg{$_}) @@ -1016,14 +1015,6 @@ sub basic_generator { $size += $this_size; } - # - # If requested, pass a pointer to the destination register. - # The destination must be the last operand. - # - if ($flags =~ /-gen_dest/) { - push(@f, $gen_dest_arg); - } - # # Add a fail action macro if requested. # -- cgit v1.2.3