From b949b9c01b1986aa663238afa279ed9e116a618c Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Thu, 10 Dec 2015 14:17:36 +0000 Subject: [WebAssembly] Make WebAssemblyStoreResults only return true when it has a change. llvm-svn: 255253 --- llvm/lib/Target/WebAssembly/WebAssemblyStoreResults.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyStoreResults.cpp') diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyStoreResults.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyStoreResults.cpp index 21122ba..650143a 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyStoreResults.cpp +++ b/llvm/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; } -- cgit v1.1