AMDGPU: Scavenge register instead of findUnusedReg
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356149 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/AMDGPU/SIRegisterInfo.cpp b/lib/Target/AMDGPU/SIRegisterInfo.cpp
index 11b03c2..726e73c 100644
--- a/lib/Target/AMDGPU/SIRegisterInfo.cpp
+++ b/lib/Target/AMDGPU/SIRegisterInfo.cpp
@@ -564,7 +564,7 @@
// We don't have access to the register scavenger if this function is called
// during PEI::scavengeFrameVirtualRegs().
if (RS)
- SOffset = RS->FindUnusedReg(&AMDGPU::SGPR_32RegClass);
+ SOffset = RS->scavengeRegister(&AMDGPU::SGPR_32RegClass, 0, false);
if (SOffset == AMDGPU::NoRegister) {
// There are no free SGPRs, and since we are in the process of spilling
