[llvm] a587bf3 - [NFC][SimplifyCFG] Count the number of invokes turned into calls due to empty cleanup blocks
Roman Lebedev via llvm-commits
llvm-commits at lists.llvm.org
Sat Aug 8 10:04:39 PDT 2020
Author: Roman Lebedev
Date: 2020-08-08T20:00:27+03:00
New Revision: a587bf3eb074340710a36c0c00c16dadcf5adb79
URL: https://github.com/llvm/llvm-project/commit/a587bf3eb074340710a36c0c00c16dadcf5adb79
DIFF: https://github.com/llvm/llvm-project/commit/a587bf3eb074340710a36c0c00c16dadcf5adb79.diff
LOG: [NFC][SimplifyCFG] Count the number of invokes turned into calls due to empty cleanup blocks
Added:
Modified:
llvm/lib/Transforms/Utils/SimplifyCFG.cpp
Removed:
################################################################################
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
index a578bbd3f65b..a0e565849e1a 100644
--- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -162,6 +162,8 @@ STATISTIC(NumSinkCommonCode,
STATISTIC(NumSinkCommonInstrs,
"Number of common instructions sunk down to the end block");
STATISTIC(NumSpeculations, "Number of speculative executed instructions");
+STATISTIC(NumInvokes,
+ "Number of invokes with empty resume blocks simplified into calls");
namespace {
@@ -4017,6 +4019,7 @@ bool SimplifyCFGOpt::simplifyCommonResume(ResumeInst *RI) {
PI != PE;) {
BasicBlock *Pred = *PI++;
removeUnwindEdge(Pred);
+ ++NumInvokes;
}
// In each SimplifyCFG run, only the current processed block can be erased.
@@ -4072,6 +4075,7 @@ bool SimplifyCFGOpt::simplifySingleResume(ResumeInst *RI) {
for (pred_iterator PI = pred_begin(BB), PE = pred_end(BB); PI != PE;) {
BasicBlock *Pred = *PI++;
removeUnwindEdge(Pred);
+ ++NumInvokes;
}
// The landingpad is now unreachable. Zap it.
@@ -4192,6 +4196,7 @@ static bool removeEmptyCleanup(CleanupReturnInst *RI) {
BasicBlock *PredBB = *PI++;
if (UnwindDest == nullptr) {
removeUnwindEdge(PredBB);
+ ++NumInvokes;
} else {
Instruction *TI = PredBB->getTerminator();
TI->replaceUsesOfWith(BB, UnwindDest);
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