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Make tail merging the default, except on powerPC. There was no prior art

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for a target-dependent default with a command-line override; this way
should be generally usable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37285 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2007-05-22 17:14:46 +00:00
parent 9621921acb
commit 81da02b553
8 changed files with 69 additions and 7 deletions
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4
lib/CodeGen/LLVMTargetMachine.cpp
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@@ -78,7 +78,7 @@ LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
// Branch folding must be run after regalloc and prolog/epilog insertion.
if (!Fast)
PM.add(createBranchFoldingPass());
PM.add(createBranchFoldingPass(DoTailMergeDefault()));
// Fold redundant debug labels.
PM.add(createDebugLabelFoldingPass());
@@ -181,7 +181,7 @@ bool LLVMTargetMachine::addPassesToEmitMachineCode(FunctionPassManager &PM,
// Branch folding must be run after regalloc and prolog/epilog insertion.
if (!Fast)
PM.add(createBranchFoldingPass());
PM.add(createBranchFoldingPass(DoTailMergeDefault()));
if (addPreEmitPass(PM, Fast) && PrintMachineCode)
PM.add(createMachineFunctionPrinterPass(cerr));