From 079d48b39ea641d6f7dad6307de73ef51c7da1d8 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Thu, 10 Dec 2015 14:17:36 +0000 Subject: [PATCH] [WebAssembly] Make WebAssemblyStoreResults only return true when it has a change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255253 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/WebAssembly/WebAssemblyStoreResults.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/lib/Target/WebAssembly/WebAssemblyStoreResults.cpp b/lib/Target/WebAssembly/WebAssemblyStoreResults.cpp index 21122ba2b2e..650143a9409 100644 --- a/lib/Target/WebAssembly/WebAssemblyStoreResults.cpp +++ b/lib/Target/WebAssembly/WebAssemblyStoreResults.cpp @@ -71,6 +71,7 @@ bool WebAssemblyStoreResults::runOnMachineFunction(MachineFunction &MF) { const MachineRegisterInfo &MRI = MF.getRegInfo(); MachineDominatorTree &MDT = getAnalysis(); + bool Changed = false; assert(MRI.isSSA() && "StoreResults depends on SSA form"); @@ -108,6 +109,7 @@ bool WebAssemblyStoreResults::runOnMachineFunction(MachineFunction &MF) { if (&MI == Where || !MDT.dominates(&MI, Where)) continue; } + Changed = true; DEBUG(dbgs() << "Setting operand " << O << " in " << *Where << " from " << MI << "\n"); O.setReg(ToReg); @@ -115,5 +117,5 @@ bool WebAssemblyStoreResults::runOnMachineFunction(MachineFunction &MF) { } } - return true; + return Changed; } -- 2.34.1