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Demote this opt remark to DEBUG. 

From a random opt-stat output:

Top 10 remarks:
  tailcallelim/tailcall          53%
  inline/AlwaysInline            13%
  gvn/LoadClobbered              13%
  inline/Inlined                  8%
  inline/TooCostly                2%
  inline/NoDefinition             2%
  licm/LoadWithLoopInvariantAddressInvalidated  2%
  licm/Hoisted                    1%
  asm-printer/InstructionCount    1%
  prologepilog/StackSize          1%

llvm-svn: 319235
This commit is contained in:
Adam Nemet 2017-11-28 22:11:00 +00:00
parent a27f1e675a
commit 2e92289014
2 changed files with 1 additions and 5 deletions
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5
llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp
View File

@ -303,10 +303,7 @@ static bool markTails(Function &F, bool &AllCallsAreTailCalls,
if (Visited[CI->getParent()] != ESCAPED) {
// If the escape point was part way through the block, calls after the
// escape point wouldn't have been put into DeferredTails.
ORE->emit([&]() {
return OptimizationRemark(DEBUG_TYPE, "tailcall", CI)
<< "marked as tail call candidate";
});
DEBUG(dbgs() << "Marked as tail call candidate: " << *CI << "\n");
CI->setTailCall();
Modified = true;
} else {

1
llvm/test/Transforms/TailCallElim/opt-remarks-recursion.ll
View File

@ -1,7 +1,6 @@
; RUN: opt %s -tailcallelim -pass-remarks=tailcallelim -o /dev/null 2>&1 | FileCheck %s
; RUN: opt %s -o /dev/null -passes='require<opt-remark-emit>,tailcallelim' -pass-remarks=tailcallelim 2>&1 | FileCheck %s
; CHECK: /home/davide/pat.c:2:20: marked as tail call candidate
; CHECK: /home/davide/pat.c:2:20: transforming tail recursion into loop
define i32 @fib(i32 %n) nounwind ssp {
entry: