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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 | 16f7cf6a2f2e4bc5910185be47d4430b13b2cbf3 (patch) | |
| tree | 6095d7e9efac0b6ae4c90f4a237a5fd447ee96ec | |
| parent | 30458b51e385e1cd747d7c4a6eb1ebefe0c89772 (diff) | |
| download | bcm5719-llvm-16f7cf6a2f2e4bc5910185be47d4430b13b2cbf3.tar.gz bcm5719-llvm-16f7cf6a2f2e4bc5910185be47d4430b13b2cbf3.zip | |
Handle <def,undef> in the second loop as well.
llvm-svn: 130718
| -rw-r--r-- | llvm/lib/CodeGen/RegisterScavenging.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/RegisterScavenging.cpp b/llvm/lib/CodeGen/RegisterScavenging.cpp index e2c25aba02e..9e9a145b0aa 100644 --- a/llvm/lib/CodeGen/RegisterScavenging.cpp +++ b/llvm/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 |
