[llvm-commits] [llvm] r122887 - /llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp
Cameron Zwarich
zwarich at apple.com
Wed Jan 5 09:27:28 PST 2011
Author: zwarich
Date: Wed Jan 5 11:27:27 2011
New Revision: 122887
URL: http://llvm.org/viewvc/llvm-project?rev=122887&view=rev
Log:
Add some stats to CodeGenPrepare to make it easier to speed it up without
regressing code quality.
Modified:
llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp
Modified: llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp?rev=122887&r1=122886&r2=122887&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/CodeGenPrepare.cpp Wed Jan 5 11:27:27 2011
@@ -44,7 +44,15 @@
using namespace llvm;
using namespace llvm::PatternMatch;
-STATISTIC(NumElim, "Number of blocks eliminated");
+STATISTIC(NumBlocksElim, "Number of blocks eliminated");
+STATISTIC(NumCmpUses, "Number of uses of Cmp expressions replaced with uses of "
+ "sunken Cmps");
+STATISTIC(NumCastUses, "Number of uses of Cast expressions replaced with uses "
+ "of sunken Casts");
+STATISTIC(NumMemoryInsts, "Number of memory instructions whose address "
+ "computations were sunk");
+STATISTIC(NumExtsMoved, "Number of [s|z]ext instructions combined with loads");
+STATISTIC(NumExtUses, "Number of uses of [s|z]ext instructions optimized");
static cl::opt<bool>
CriticalEdgeSplit("cgp-critical-edge-splitting",
@@ -310,7 +318,7 @@
PFI->removeEdge(ProfileInfo::getEdge(BB, DestBB));
}
BB->eraseFromParent();
- ++NumElim;
+ ++NumBlocksElim;
DEBUG(dbgs() << "AFTER:\n" << *DestBB << "\n\n\n");
}
@@ -489,6 +497,7 @@
// Replace a use of the cast with a use of the new cast.
TheUse = InsertedCast;
+ ++NumCastUses;
}
// If we removed all uses, nuke the cast.
@@ -546,6 +555,7 @@
// Replace a use of the cmp with a use of the new cmp.
TheUse = InsertedCmp;
+ ++NumCmpUses;
}
// If we removed all uses, nuke the cmp.
@@ -793,6 +803,7 @@
// we don't want to match some completely different instruction.
SunkAddrs[Addr] = 0;
}
+ ++NumMemoryInsts;
return true;
}
@@ -858,6 +869,7 @@
// can fold it.
I->removeFromParent();
I->insertAfter(LI);
+ ++NumExtsMoved;
return true;
}
@@ -929,7 +941,7 @@
// Replace a use of the {s|z}ext source with a use of the result.
TheUse = InsertedTrunc;
-
+ ++NumExtUses;
MadeChange = true;
}
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