diff options
| author | Steven Perron <stevenperron@google.com> | 2018-04-16 09:58:00 -0400 |
|---|---|---|
| committer | Steven Perron <stevenperron@google.com> | 2018-05-18 10:03:46 -0400 |
| commit | a579e720a8d7805ec9ebf657a4c6fa67ec268f7e (patch) | |
| tree | 704a59d3c2f2cc71b7dba20073ef2a86528e000a /tools | |
| parent | f1f7cc870e13e1ad1eb2f2e757c21aec4276c707 (diff) | |
Remove the limit on struct size in SROA.
Removes the limit on scalar replacement for the lagalization passes.
This is done by adding an option to the pass (and command line option)
to set the limit on maximum size of the composite that scalar
replacement is willing to divide.
Fixes #1494.
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/opt/opt.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp index 0d965666..38aa36e5 100644 --- a/tools/opt/opt.cpp +++ b/tools/opt/opt.cpp @@ -292,10 +292,12 @@ Options (in lexicographical order): --ssa-rewrite Replace loads and stores to function local variables with operations on SSA IDs. - --scalar-replacement + --scalar-replacement[=<n>] Replace aggregate function scope variables that are only accessed via their elements with new function variables representing each - element. + element. <n> is a limit on the size of the aggragates that will + be replaced. 0 means there is no limit. The default value is + 100. --set-spec-const-default-value "<spec id>:<default value> ..." Set the default values of the specialization constants with <spec id>:<default value> pairs specified in a double-quoted @@ -569,6 +571,9 @@ OptStatus ParseFlags(int argc, const char** argv, Optimizer* optimizer, optimizer->RegisterPass(CreateLoopUnswitchPass()); } else if (0 == strcmp(cur_arg, "--scalar-replacement")) { optimizer->RegisterPass(CreateScalarReplacementPass()); + } else if (0 == strncmp(cur_arg, "--scalar-replacement=", 21)) { + uint32_t limit = atoi(cur_arg + 21); + optimizer->RegisterPass(CreateScalarReplacementPass(limit)); } else if (0 == strcmp(cur_arg, "--strength-reduction")) { optimizer->RegisterPass(CreateStrengthReductionPass()); } else if (0 == strcmp(cur_arg, "--unify-const")) { |