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Run SimplifyLibCalls near the beginning, not at

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the end.  It is now run at the same moment as in
llvm-gcc.  Also, run StripDeadPrototypes at the
end, just before running DeadTypeElimination.
This may be useful when doing LTO.  Note that
llvm-gcc runs StripDeadPrototypes but not
DeadTypeElimination.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49848 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2008-04-17 12:03:38 +00:00
parent 02819257a6
commit fa191e4cd4
1 changed files with 2 additions and 1 deletions
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tools/opt/opt.cpp
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@ -262,6 +262,7 @@ void AddStandardCompilePasses(PassManager &PM) {
if (!DisableInline)
addPass(PM, createFunctionInliningPass()); // Inline small functions
addPass(PM, createSimplifyLibCallsPass()); // Library Call Optimizations
addPass(PM, createArgumentPromotionPass()); // Scalarize uninlined fn args
addPass(PM, createTailDuplicationPass()); // Simplify cfg by copying code
@ -294,7 +295,7 @@ void AddStandardCompilePasses(PassManager &PM) {
addPass(PM, createDeadStoreEliminationPass()); // Delete dead stores
addPass(PM, createAggressiveDCEPass()); // SSA based 'Aggressive DCE'
addPass(PM, createCFGSimplificationPass()); // Merge & remove BBs
addPass(PM, createSimplifyLibCallsPass()); // Library Call Optimizations
addPass(PM, createStripDeadPrototypesPass()); // Get rid of dead prototypes
addPass(PM, createDeadTypeEliminationPass()); // Eliminate dead types
addPass(PM, createConstantMergePass()); // Merge dup global constants
}