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R600/SI: fix ELSE pseudo op handling

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Restore the EXEC mask early, otherwise a copy might end up not beeing executed.

Candidate for the mesa stable branch.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178018 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Christian Konig 2013-03-26 14:03:44 +00:00
parent b78821d380
commit e981802d9b
1 changed files with 2 additions and 1 deletions
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3
lib/Target/R600/SILowerControlFlow.cpp
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@ -197,7 +197,8 @@ void SILowerControlFlowPass::Else(MachineInstr &MI) {
unsigned Dst = MI.getOperand(0).getReg();
unsigned Src = MI.getOperand(1).getReg();
BuildMI(MBB, &MI, DL, TII->get(AMDGPU::S_OR_SAVEEXEC_B64), Dst)
BuildMI(MBB, MBB.getFirstNonPHI(), DL,
TII->get(AMDGPU::S_OR_SAVEEXEC_B64), Dst)
.addReg(Src); // Saved EXEC
BuildMI(MBB, &MI, DL, TII->get(AMDGPU::S_XOR_B64), AMDGPU::EXEC)