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In the LEMON-generated parser, avoid unnecessary tests for the acceptance 

state.

FossilOrigin-Name: fdbb35c54f2b6cb65d04ac295f207ff3e69360e0558348c77eb5e62691807046
This commit is contained in:
drh 2017-12-25 00:10:05 +00:00
parent 5c8241b875
commit ef53a9f0af
3 changed files with 17 additions and 18 deletions
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12
manifest
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@ -1,5 +1,5 @@
C In\sthe\sLEMON-generated\sparser,\srearrange\sthe\smeanings\sof\sinteger\saction\scodes\nso\sthat\sreduce\sactions\soccur\slast.\s\sThis\smeans\sthat\sthe\smost\scommon\scase\n(reduce\sactions)\scan\sbe\srecognized\swith\sa\ssingle\scomparison\soperation,\sthus\nspeeding\sup\sthe\smain\sparser\sloop,\sslightly.
D 2017-12-24T23:38:10.370
C In\sthe\sLEMON-generated\sparser,\savoid\sunnecessary\stests\sfor\sthe\sacceptance\nstate.
D 2017-12-25T00:10:05.418
F Makefile.in ceb40bfcb30ebba8e1202b34c56ff7e13e112f9809e2381d99be32c2726058f5
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc 6480671f7c129e61208d69492b3c71ce4310d49fceac83cfb17f1c081e242b69
@ -1609,7 +1609,7 @@ F tool/genfkey.test 4196a8928b78f51d54ef58e99e99401ab2f0a7e5
F tool/getlock.c f4c39b651370156cae979501a7b156bdba50e7ce
F tool/kvtest-speed.sh 4761a9c4b3530907562314d7757995787f7aef8f
F tool/lemon.c 7c6919d98e459c0f8a3673be64b03425553733dba01c12939b2fadc30e4e2804
F tool/lempar.c c8dd4dcf0bca9d7c27c62f7df12882c30db749cd9bb83d6f71796b9fabb94f6c
F tool/lempar.c 8062f219b4ce349853cb3ab3ebd3ab44466604235347457d703a9f4252e76dd5
F tool/libvers.c caafc3b689638a1d88d44bc5f526c2278760d9b9
F tool/loadfts.c c3c64e4d5e90e8ba41159232c2189dba4be7b862
F tool/logest.c 11346aa019e2e77a00902aa7d0cabd27bd2e8cca
@ -1687,7 +1687,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 25be5750545b7b0ed9e1a1baca31611b354519688f875aa1590b21bb6ff42f1b
R 02413a9b8686f5cb855fd9a72c28a347
P 7bfe7a360261ac7227840db49487c2f0fe338a2f1b868fcaada1e04a8d2b8f7a
R 904d9f58d13471f5c0ad3064ead9b812
U drh
Z a4798d5b361261f3f5c39967bad11abf
Z c00f50853c78fa733a13b33ab92ee708

2
manifest.uuid
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@ -1 +1 @@
7bfe7a360261ac7227840db49487c2f0fe338a2f1b868fcaada1e04a8d2b8f7a
fdbb35c54f2b6cb65d04ac295f207ff3e69360e0558348c77eb5e62691807046

21
tool/lempar.c
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@ -472,7 +472,7 @@ static unsigned int yy_find_shift_action(
int i;
int stateno = pParser->yytos->stateno;
if( stateno>=YY_MIN_REDUCE ) return stateno;
if( stateno>YY_MAX_SHIFT ) return stateno;
assert( stateno <= YY_SHIFT_COUNT );
do{
i = yy_shift_ofst[stateno];
@ -736,16 +736,11 @@ static void yy_reduce(
/* It is not possible for a REDUCE to be followed by an error */
assert( yyact!=YY_ERROR_ACTION );
if( yyact==YY_ACCEPT_ACTION ){
yypParser->yytos += yysize;
yy_accept(yypParser);
}else{
yymsp += yysize+1;
yypParser->yytos = yymsp;
yymsp->stateno = (YYACTIONTYPE)yyact;
yymsp->major = (YYCODETYPE)yygoto;
yyTraceShift(yypParser, yyact, "... then shift");
}
yymsp += yysize+1;
yypParser->yytos = yymsp;
yymsp->stateno = (YYACTIONTYPE)yyact;
yymsp->major = (YYCODETYPE)yygoto;
yyTraceShift(yypParser, yyact, "... then shift");
}
/*
@ -876,6 +871,10 @@ void Parse(
yypParser->yyerrcnt--;
#endif
yymajor = YYNOCODE;
}else if( yyact==YY_ACCEPT_ACTION ){
yypParser->yytos--;
yy_accept(yypParser);
return;
}else{
assert( yyact == YY_ERROR_ACTION );
yyminorunion.yy0 = yyminor;