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R600/SI: Fix another case of illegal VGPR to SGPR copy

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This fixes a crash in Unigine Tropics.

https://bugs.freedesktop.org/show_bug.cgi?id=68389

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189057 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard
2013-08-22 20:21:02 +00:00
parent 054cec05b8
commit 344cfb4db4
2 changed files with 143 additions and 4 deletions
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2
lib/Target/R600/SIFixSGPRCopies.cpp
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@@ -143,7 +143,7 @@ bool SIFixSGPRCopies::runOnMachineFunction(MachineFunction &MF) {
}
unsigned Reg = MI.getOperand(0).getReg();
const TargetRegisterClass *RC = inferRegClass(TRI, MRI, Reg);
if (RC == &AMDGPU::VSrc_32RegClass) {
if (TRI->getCommonSubClass(RC, &AMDGPU::VReg_32RegClass)) {
MRI.constrainRegClass(Reg, &AMDGPU::VReg_32RegClass);
}
}