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Replace the use of isPredicable() with isPredicated() in

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MachineBasicBlock::canFallThrough().  We're interested in the state of the
instruction (i.e., is this a barrier or not?), not if the instruction is
predicable or not.
rdar://10501092

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149070 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier
2012-01-26 18:24:25 +00:00
parent 1a96c91431
commit 0162ff421d
2 changed files with 46 additions and 3 deletions
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5
lib/CodeGen/MachineBasicBlock.cpp
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@@ -535,13 +535,12 @@ bool MachineBasicBlock::canFallThrough() {
if (TII->AnalyzeBranch(*this, TBB, FBB, Cond)) {
// If we couldn't analyze the branch, examine the last instruction.
// If the block doesn't end in a known control barrier, assume fallthrough
// is possible. The isPredicable check is needed because this code can be
// is possible. The isPredicated check is needed because this code can be
// called during IfConversion, where an instruction which is normally a
// Barrier is predicated and thus no longer an actual control barrier. This
// is over-conservative though, because if an instruction isn't actually
// predicated we could still treat it like a barrier.
return empty() || !back().isBarrier() ||
back().isPredicable();
return empty() || !back().isBarrier() || TII->isPredicated(&back());
}
// If there is no branch, control always falls through.