diff options
-rw-r--r-- | llvm/lib/Analysis/InlineCost.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/InlineCost.cpp b/llvm/lib/Analysis/InlineCost.cpp index 10c2d79bef3..98dbb69fe6a 100644 --- a/llvm/lib/Analysis/InlineCost.cpp +++ b/llvm/lib/Analysis/InlineCost.cpp @@ -175,7 +175,11 @@ void CodeMetrics::analyzeBasicBlock(const BasicBlock *BB) { if (!isa<IntrinsicInst>(II) && !callIsSmall(CS.getCalledFunction())) { // Each argument to a call takes on average one instruction to set up. NumInsts += CS.arg_size(); - ++NumCalls; + + // We don't want inline asm to count as a call - that would prevent loop + // unrolling. The argument setup cost is still real, though. + if (!isa<InlineAsm>(CS.getCalledValue())) + ++NumCalls; } } |