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| author | Chad Rosier <mcrosier@apple.com> | 2012-11-06 22:52:42 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2012-11-06 22:52:42 +0000 |
| commit | 7979b24e5cd4a99db6af3fcd66d9f514f02d11db (patch) | |
| tree | d03f33e1477ed275e2785ab4f22606fb983bd2ba /lib/CodeGen/RegAllocFast.cpp | |
| parent | a6fb97a49a2e6070c71d44a54c8c0c117b62255a (diff) | |
| download | llvm-7979b24e5cd4a99db6af3fcd66d9f514f02d11db.tar.gz llvm-7979b24e5cd4a99db6af3fcd66d9f514f02d11db.tar.bz2 llvm-7979b24e5cd4a99db6af3fcd66d9f514f02d11db.tar.xz | |
[regallocfast] Make sure the MachineRegisterInfo is aware of clobbers from a
register masks. This is an obvious and necessary fix for a soon to be committed
patch. No test case possible at this time. Reviewed by Jakob.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167498 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegAllocFast.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocFast.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/CodeGen/RegAllocFast.cpp b/lib/CodeGen/RegAllocFast.cpp index e426fe23c0..88922169b3 100644 --- a/lib/CodeGen/RegAllocFast.cpp +++ b/lib/CodeGen/RegAllocFast.cpp @@ -956,6 +956,11 @@ void RAFast::AllocateBasicBlock() { bool hasPhysDefs = false; for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { MachineOperand &MO = MI->getOperand(i); + // Make sure MRI knows about registers clobbered by regmasks. + if (MO.isRegMask()) { + MRI->addPhysRegsUsedFromRegMask(MO.getRegMask()); + continue; + } if (!MO.isReg()) continue; unsigned Reg = MO.getReg(); if (!Reg) continue; |