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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-02 20:36:53 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-05-02 20:36:53 +0000 |
| commit | d61c40360c3acc847263c5e5184b715c17528b09 (patch) | |
| tree | 03911826714f5445e61c6b7b1c8cb63404c966d2 /lib/CodeGen/RegisterScavenging.cpp | |
| parent | 52f6c03a450aeed93b97cad9e5373029ebcad5e7 (diff) | |
Handle <def,undef> in the second loop as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130718 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegisterScavenging.cpp')
| -rw-r--r-- | lib/CodeGen/RegisterScavenging.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/RegisterScavenging.cpp b/lib/CodeGen/RegisterScavenging.cpp index e2c25aba02..9e9a145b0a 100644 --- a/lib/CodeGen/RegisterScavenging.cpp +++ b/lib/CodeGen/RegisterScavenging.cpp @@ -181,12 +181,14 @@ void RegScavenger::forward() { // Verify uses and defs. for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { const MachineOperand &MO = MI->getOperand(i); - if (!MO.isReg() || MO.isUndef()) + if (!MO.isReg()) continue; unsigned Reg = MO.getReg(); if (!Reg || isReserved(Reg)) continue; if (MO.isUse()) { + if (MO.isUndef()) + continue; if (!isUsed(Reg)) { // Check if it's partial live: e.g. // D0 = insert_subreg D0<undef>, S0 |