Run SimplifyLibCalls near the beginning, not at
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
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index 80deb75..ca206cf 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -262,6 +262,7 @@
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 @@
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
}