From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Fri, 17 Feb 2012 19:07:59 +0000 (+0000)
Subject: Fix ARMBaseInstrInfo::getInstrLatency for calls.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=8c3b87cf19df5631125254784d57446b80e12397;p=oota-llvm.git

Fix ARMBaseInstrInfo::getInstrLatency for calls.

Calls always clobber CPSR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150831 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp
index 2d7df09411d..166b248f913 100644
--- a/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -2849,7 +2849,7 @@ int ARMBaseInstrInfo::getInstrLatency(const InstrItineraryData *ItinData,
   const MCInstrDesc &MCID = MI->getDesc();
   unsigned Class = MCID.getSchedClass();
   unsigned UOps = ItinData->Itineraries[Class].NumMicroOps;
-  if (PredCost && MCID.hasImplicitDefOfPhysReg(ARM::CPSR))
+  if (PredCost && (MCID.isCall() || MCID.hasImplicitDefOfPhysReg(ARM::CPSR)))
     // When predicated, CPSR is an additional source operand for CPSR updating
     // instructions, this apparently increases their latencies.
     *PredCost = 1;