[llvm] r323905 - [MachineOutliner] Freeze registers in new functions

[Geoff Berry via llvm-commits]

Author: gberry
Date: Wed Jan 31 12:15:16 2018
New Revision: 323905

URL: http://llvm.org/viewvc/llvm-project?rev=323905&view=rev
Log:
[MachineOutliner] Freeze registers in new functions

Summary:
Call MRI.freezeReservedRegs() on functions created during outlining so
that calls to isReserved() by the verifier called after this pass won't
assert.

Reviewers: MatzeB, qcolombet, paquette

Subscribers: mcrosier, javed.absar, llvm-commits

Differential Revision: https://reviews.llvm.org/D42749

Modified:
    llvm/trunk/lib/CodeGen/MachineOutliner.cpp
    llvm/trunk/test/CodeGen/AArch64/machine-outliner.mir

Modified: llvm/trunk/lib/CodeGen/MachineOutliner.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineOutliner.cpp?rev=323905&r1=323904&r2=323905&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineOutliner.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineOutliner.cpp Wed Jan 31 12:15:16 2018
@@ -62,6 +62,7 @@
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
 #include "llvm/CodeGen/MachineOptimizationRemarkEmitter.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/TargetInstrInfo.h"
 #include "llvm/CodeGen/TargetRegisterInfo.h"
@@ -1311,6 +1312,7 @@ MachineOutliner::createOutlinedFunction(
     DB.finalize();
   }
 
+  MF.getRegInfo().freezeReservedRegs(MF);
   return &MF;
 }
 

Modified: llvm/trunk/test/CodeGen/AArch64/machine-outliner.mir
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/machine-outliner.mir?rev=323905&r1=323904&r2=323905&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/machine-outliner.mir (original)
+++ llvm/trunk/test/CodeGen/AArch64/machine-outliner.mir Wed Jan 31 12:15:16 2018
@@ -1,4 +1,4 @@
-# RUN: llc -mtriple=aarch64--- -run-pass=machine-outliner %s -o - | FileCheck %s
+# RUN: llc -mtriple=aarch64--- -run-pass=machine-outliner -verify-machineinstrs %s -o - | FileCheck %s
 --- |
 
   @x = common global i32 0, align 4