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| author | Evan Cheng <evan.cheng@apple.com> | 2007-07-06 23:22:03 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2007-07-06 23:22:03 +0000 |
| commit | d771e05121e04db3c648f334222515e73004a825 (patch) | |
| tree | 3e3463578fa6df172ccd323d10f8c84ad3eaee47 /llvm/lib/Target/X86/X86InstrInfo.cpp | |
| parent | b039c6088926652ea82b34d61a250ed8a5bff144 (diff) | |
| download | bcm5719-llvm-d771e05121e04db3c648f334222515e73004a825.tar.gz bcm5719-llvm-d771e05121e04db3c648f334222515e73004a825.zip | |
isUnpredicatedTerminator should treat conditional branches as unpredicated terminator.
llvm-svn: 37960
Diffstat (limited to 'llvm/lib/Target/X86/X86InstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrInfo.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp index 200ed45bb48..06b14fe1c40 100644 --- a/llvm/lib/Target/X86/X86InstrInfo.cpp +++ b/llvm/lib/Target/X86/X86InstrInfo.cpp @@ -404,11 +404,18 @@ X86::CondCode X86::GetOppositeBranchCondition(X86::CondCode CC) { // For purposes of branch analysis do not count FP_REG_KILL as a terminator. bool X86InstrInfo::isUnpredicatedTerminator(const MachineInstr *MI) const { - const TargetInstrDescriptor *TID = MI->getInstrDescriptor(); if (MI->getOpcode() == X86::FP_REG_KILL) return false; - if (TID->Flags & M_TERMINATOR_FLAG) + + const TargetInstrDescriptor *TID = MI->getInstrDescriptor(); + if (TID->Flags & M_TERMINATOR_FLAG) { + // Conditional branch is a special case. + if ((TID->Flags & M_BRANCH_FLAG) != 0 && (TID->Flags & M_BARRIER_FLAG) == 0) + return true; + if ((TID->Flags & M_PREDICABLE) == 0) + return true; return !isPredicated(MI); + } return false; } |
