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Use power-of-two number of members to align structs

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This commit is contained in:
Wilson Snyder
2017-12-11 19:16:49 -05:00
parent d1b8f53711
commit a0b2727c59
1 changed files with 4 additions and 4 deletions
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src/V3Options.cpp
+4 -4
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@@ -738,7 +738,7 @@ void V3Options::parseOptsList(FileLine* fl, const string& optdir, int argc, char
}
else if ( !strcmp (sw, "-comp-limit-members") && (i+1)<argc ) { // Undocumented
shift;
m_compLimitMembers = atoi(argv[i]);
m_compLimitMembers = atoi(argv[i]); // Ideally power-of-two so structs stay aligned
}
else if ( !strcmp (sw, "-comp-limit-parens") && (i+1)<argc ) { // Undocumented
shift;
@@ -958,11 +958,11 @@ void V3Options::parseOptsList(FileLine* fl, const string& optdir, int argc, char
shift;
if (!strcmp (argv[i], "clang")) {
m_compLimitBlocks = 80; // limit unknown
m_compLimitMembers = 50; // soft limit, has slowdown bug as of clang++ 3.8
m_compLimitMembers = 64; // soft limit, has slowdown bug as of clang++ 3.8
m_compLimitParens = 80; // limit unknown
} else if (!strcmp (argv[i], "gcc")) {
m_compLimitBlocks = 0; // Bug free
m_compLimitMembers = 50; // soft limit, has slowdown bug as of g++ 7.1
m_compLimitMembers = 64; // soft limit, has slowdown bug as of g++ 7.1
m_compLimitParens = 0; // Bug free
} else if (!strcmp (argv[i], "msvc")) {
m_compLimitBlocks = 80; // 128, but allow some room
@@ -1265,7 +1265,7 @@ V3Options::V3Options() {
m_unrollStmts = 30000;
m_compLimitBlocks = 0;
m_compLimitMembers = 50;
m_compLimitMembers = 64;
m_compLimitParens = 0;
m_makeDir = "obj_dir";