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| author | Chad Rosier <mcrosier@apple.com> | 2011-10-27 00:21:16 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2011-10-27 00:21:16 +0000 |
| commit | 6d64b3adab682aea9c0b4dd665acc5e863ac6d21 (patch) | |
| tree | 2a8e35e181a67ab4239a28cc881c9057576e48bd /lib/Target/ARM/ARMFastISel.cpp | |
| parent | 15701f8969fcb36899a75ca2df6fdcbc52141106 (diff) | |
| download | llvm-6d64b3adab682aea9c0b4dd665acc5e863ac6d21.tar.gz llvm-6d64b3adab682aea9c0b4dd665acc5e863ac6d21.tar.bz2 llvm-6d64b3adab682aea9c0b4dd665acc5e863ac6d21.tar.xz | |
A branch predicated on a constant can just FastEmit an unconditional branch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143086 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMFastISel.cpp')
| -rw-r--r-- | lib/Target/ARM/ARMFastISel.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp index a67c867145..6aff834b95 100644 --- a/lib/Target/ARM/ARMFastISel.cpp +++ b/lib/Target/ARM/ARMFastISel.cpp @@ -1151,6 +1151,12 @@ bool ARMFastISel::SelectBranch(const Instruction *I) { FuncInfo.MBB->addSuccessor(TBB); return true; } + } else if (const ConstantInt *CI = + dyn_cast<ConstantInt>(BI->getCondition())) { + uint64_t Imm = CI->getZExtValue(); + MachineBasicBlock *Target = (Imm == 0) ? FBB : TBB; + FastEmitBranch(Target, DL); + return true; } unsigned CmpReg = getRegForValue(BI->getCondition()); |