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author | Chris Lattner <sabre@nondot.org> | 2006-10-28 17:29:57 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2006-10-28 17:29:57 +0000 |
commit | c24ff8ed12d01a1b1d2fac57876fc7580024ec49 (patch) | |
tree | 5e1775b2202dcef18a59a755605d921ea050af79 /include/llvm/Target/TargetInstrInfo.h | |
parent | 1c6f01aaa58c1f8666c30465b73b702524fa9553 (diff) | |
download | external_llvm-c24ff8ed12d01a1b1d2fac57876fc7580024ec49.zip external_llvm-c24ff8ed12d01a1b1d2fac57876fc7580024ec49.tar.gz external_llvm-c24ff8ed12d01a1b1d2fac57876fc7580024ec49.tar.bz2 |
add another target hook for branch folding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31262 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Target/TargetInstrInfo.h')
-rw-r--r-- | include/llvm/Target/TargetInstrInfo.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/llvm/Target/TargetInstrInfo.h b/include/llvm/Target/TargetInstrInfo.h index 9e269f3..b0ac41b 100644 --- a/include/llvm/Target/TargetInstrInfo.h +++ b/include/llvm/Target/TargetInstrInfo.h @@ -318,6 +318,14 @@ public: assert(0 && "Target didn't implement TargetInstrInfo::InsertBranch!"); } + /// BlockHasNoFallThrough - Return true if the specified block does not + /// fall-through into its successor block. This is primarily used when a + /// branch is unanalyzable. It is useful for things like unconditional + /// indirect branches (jump tables). + virtual bool BlockHasNoFallThrough(MachineBasicBlock &MBB) const { + return false; + } + /// ReverseBranchCondition - Reverses the branch condition of the specified /// condition list, returning false on success and true if it cannot be /// reversed. |