[PATCH] D132561: [Sparc] Mark the g0 register as constantThis adds an implementation of isConstantPhysReg().

[Alexander Richardson via Phabricator via llvm-commits]

arichardson created this revision.
arichardson added reviewers: ro, joerg.
Herald added subscribers: jrtc27, fedor.sergeev, hiraditya, jyknight.
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arichardson requested review of this revision.
Herald added a project: LLVM.
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Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D132561

Files:
  llvm/lib/Target/Sparc/SparcRegisterInfo.td


Index: llvm/lib/Target/Sparc/SparcRegisterInfo.td
===================================================================
--- llvm/lib/Target/Sparc/SparcRegisterInfo.td
+++ llvm/lib/Target/Sparc/SparcRegisterInfo.td
@@ -126,6 +126,7 @@
 def WSTATE : SparcCtrlReg<14, "WSTATE">;
 
 // Integer registers
+let isConstant = true in
 def G0 : Ri< 0, "G0">, DwarfRegNum<[0]>;
 def G1 : Ri< 1, "G1">, DwarfRegNum<[1]>;
 def G2 : Ri< 2, "G2">, DwarfRegNum<[2]>;


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