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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-06 17:59:57 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-06 17:59:57 +0000 |
| commit | cf5e5f3cc08a3c7ede5b423ee4b18586cb1079e9 (patch) | |
| tree | 8f372c7b13c08395b9d9389ea97b3ba39fb7450d /lib/CodeGen/VirtRegMap.cpp | |
| parent | e38c61597e894e001ba0f11066f2268cc9e2c5c1 (diff) | |
Also count identity copies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130996 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/VirtRegMap.cpp')
| -rw-r--r-- | lib/CodeGen/VirtRegMap.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp index 226b78f7bc..7557979ec9 100644 --- a/lib/CodeGen/VirtRegMap.cpp +++ b/lib/CodeGen/VirtRegMap.cpp @@ -42,6 +42,7 @@ using namespace llvm; STATISTIC(NumSpills , "Number of register spills"); +STATISTIC(NumIdCopies, "Number of identity moves eliminated after rewriting"); //===----------------------------------------------------------------------===// // VirtRegMap implementation @@ -318,6 +319,7 @@ void VirtRegMap::rewrite(SlotIndexes *Indexes) { // Finally, remove any identity copies. if (MI->isIdentityCopy()) { + ++NumIdCopies; if (MI->getNumOperands() == 2) { DEBUG(dbgs() << "Deleting identity copy.\n"); RemoveMachineInstrFromMaps(MI); |