[llvm] r279889 - [GlobalISel] Teach the core pipeline not to run if ISel failed.

[Quentin Colombet via llvm-commits]

Author: qcolombet
Date: Fri Aug 26 19:18:24 2016
New Revision: 279889

URL: http://llvm.org/viewvc/llvm-project?rev=279889&view=rev
Log:
[GlobalISel] Teach the core pipeline not to run if ISel failed.

Modified:
    llvm/trunk/lib/CodeGen/GlobalISel/InstructionSelect.cpp
    llvm/trunk/lib/CodeGen/GlobalISel/MachineLegalizePass.cpp
    llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp

Modified: llvm/trunk/lib/CodeGen/GlobalISel/InstructionSelect.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/GlobalISel/InstructionSelect.cpp?rev=279889&r1=279888&r2=279889&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/GlobalISel/InstructionSelect.cpp (original)
+++ llvm/trunk/lib/CodeGen/GlobalISel/InstructionSelect.cpp Fri Aug 26 19:18:24 2016
@@ -43,6 +43,11 @@ static void reportSelectionError(const M
 }
 
 bool InstructionSelect::runOnMachineFunction(MachineFunction &MF) {
+  // If the ISel pipeline failed, do not bother running that pass.
+  if (MF.getProperties().hasProperty(
+          MachineFunctionProperties::Property::FailedISel))
+    return false;
+
   DEBUG(dbgs() << "Selecting function: " << MF.getName() << '\n');
 
   const InstructionSelector *ISel = MF.getSubtarget().getInstructionSelector();

Modified: llvm/trunk/lib/CodeGen/GlobalISel/MachineLegalizePass.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/GlobalISel/MachineLegalizePass.cpp?rev=279889&r1=279888&r2=279889&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/GlobalISel/MachineLegalizePass.cpp (original)
+++ llvm/trunk/lib/CodeGen/GlobalISel/MachineLegalizePass.cpp Fri Aug 26 19:18:24 2016
@@ -37,6 +37,10 @@ void MachineLegalizePass::init(MachineFu
 }
 
 bool MachineLegalizePass::runOnMachineFunction(MachineFunction &MF) {
+  // If the ISel pipeline failed, do not bother running that pass.
+  if (MF.getProperties().hasProperty(
+          MachineFunctionProperties::Property::FailedISel))
+    return false;
   DEBUG(dbgs() << "Legalize Machine IR for: " << MF.getName() << '\n');
   init(MF);
   const MachineLegalizer &Legalizer = *MF.getSubtarget().getMachineLegalizer();

Modified: llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp?rev=279889&r1=279888&r2=279889&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp (original)
+++ llvm/trunk/lib/CodeGen/GlobalISel/RegBankSelect.cpp Fri Aug 26 19:18:24 2016
@@ -537,6 +537,11 @@ void RegBankSelect::assignInstr(MachineI
 }
 
 bool RegBankSelect::runOnMachineFunction(MachineFunction &MF) {
+  // If the ISel pipeline failed, do not bother running that pass.
+  if (MF.getProperties().hasProperty(
+          MachineFunctionProperties::Property::FailedISel))
+    return false;
+
   DEBUG(dbgs() << "Assign register banks for: " << MF.getName() << '\n');
   const Function *F = MF.getFunction();
   Mode SaveOptMode = OptMode;